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Intermediate shaft (IMS)
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99610143571/2KIT
Product Information
2 x Bearing shell for intermediate shaft (with shoulder).
Set of 4pcs
Set of 4 includes four bearing shells for the intermediate shaft. This bearing set is used to control axial play and radial support of the intermediate shaft. These precisely machined shells maintain the correct end-float, allowing accurate cam timing and smooth chain drive function under high RPM loads.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610143571
The product you are viewing cross references to these numbers
Product Information
2 x Bearing shell for intermediate shaft (no/shoulder) 2 x Bearing shell for intermediate shaft (with shoulder).
Set of 4pcs
Set of 4 includes four bearing shells for the intermediate shaft. This bearing set is used to control axial play and radial support of the intermediate shaft. These precisely machined shells maintain the correct end-float, allowing accurate cam timing and smooth chain drive function under high RPM loads.
Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 turbo / GT2 / GT3
Porsche 997.1 turbo / GT2 / GT3
Porsche 997.2 GT2 / GT3
Diagram ref no 29 & 30.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610143571
99610143570
90110113500
99310113500
99610143571
99610113780
99310113701
91610113700
99310113700
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
1 x Bearing shell for intermediate shaft. Porsche 993 / 996 Turbo / 997 Turbo / 997 GT3 (99610143571/2)
In Stock - 24 Hour Dispatch
1 x Bearing shells for intermediate shaft (PAIR). Porsche 993 / 996 turbo / 997 turbo / 997 GT3 (99610113781/2)
In Stock - 24 Hour Dispatch
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
Price: £19.90
In Stock - 24 Hour Dispatch
99610143571
Product Information
Fits:
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
This product supersedes Porsche's old part numbers:
- 90110113500
- 99310113500
Click 'Zoom in' for large parts diagram.
Diagram ref no 30.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610143571
The product you are viewing cross references to these numbers
Product Information
Bearing shell for intermediate shaft (no/shoulder). Require 2 per engine, single item only.Fits:
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
This product supersedes Porsche's old part numbers:
- 90110113500
- 99310113500
Click 'Zoom in' for large parts diagram.
Diagram ref no 30.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610143571
99610143570
90110113500
99310113500
99610143571
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
Price: £38.02
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99610143571/1
Product Information
Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
This product supersedes Porsche's old part numbers:
- 90110113500
- 99310113500
Click 'Zoom in' for large parts diagram.
Diagram ref no 30.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610143571
The product you are viewing cross references to these numbers
Product Information
Bearing shell for intermediate shaft (no/shoulder). Require 2 per engine, Price is Each one Fits:
Porsche 911 1965-89
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
This product supersedes Porsche's old part numbers:
- 90110113500
- 99310113500
Click 'Zoom in' for large parts diagram.
Diagram ref no 30.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610143571
99610143570
90110113500
99310113500
99610143571
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
Price: £7.85
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99610143571/2
Product Information
Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 turbo / GT2 / GT3
Porsche 997.1 turbo / GT2 / GT3
Porsche 997.2 GT2 / GT3
This product supersedes Porsche's old part numbers:
- 90110113500
- 99310113500
Diagram ref no 30.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610143571
The product you are viewing cross references to these numbers
Product Information
Bearing shell for intermediate shaft (no/shoulder) - Sold as a pair Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 turbo / GT2 / GT3
Porsche 997.1 turbo / GT2 / GT3
Porsche 997.2 GT2 / GT3
This product supersedes Porsche's old part numbers:
- 90110113500
- 99310113500
Diagram ref no 30.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610143571
99610143570
90110113500
99310113500
99610143571
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
Price: £9.95
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99610113781/2
Product Information
Sold as PAIR / Requires 1 pair per engine
Pair, includes two bearing shells for the intermediate shaft, with one shell having a thrust shoulder. This bearing set is used to control axial play and radial support of the intermediate shaft. These precisely machined shells maintain the correct end-float, allowing accurate cam timing and smooth chain drive function under high RPM loads.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610113781
The product you are viewing cross references to these numbers
Product Information
Bearing shell for intermediate shaft (with shoulder). Sold as PAIR / Requires 1 pair per engine
Pair, includes two bearing shells for the intermediate shaft, with one shell having a thrust shoulder. This bearing set is used to control axial play and radial support of the intermediate shaft. These precisely machined shells maintain the correct end-float, allowing accurate cam timing and smooth chain drive function under high RPM loads.
Fits:
Porsche 911 - 1965 to 1989
Porsche 914/6 - 1970 to 1976
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 turbo / GT2 / GT3
Porsche 997.1 turbo / GT2 / GT3
Porsche 997.2 GT2 / GT3
This product supersedes Porsche's old part numbers:
- 91610113700
- 99310113700
- 99310113701
Diagram ref no 29.
These high-quality bearings resist wear, maintain stability under loading, and reduce friction. The shoulder shell is designed to handle axial load and keep the shaft from shifting. Both shells are matched to OE tolerances for crush and thickness to preserve ideal oil film clearance and ensure long life.
• Location: Inside the engine case, at the intermediate shaft bore, flanking the connecting housing
• Function: Provides radial support and axial control (shoulder shell) for the intermediate shaft
Over time, the intermediate shaft bearing shells may wear, lose geometry, or develop surface fatigue. Symptoms of failure include increased endplay (shaft axial movement), chain rattle, timing variation, and rapid wear of adjacent sprockets or tensioners.
This pair should be replaced during any engine rebuild, crankshaft pull, or when measurements show endplay outside specification. Installing fresh shells restores proper shaft location and timing stability for durable performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610113781
99610113780
99310113701
91610113700
99310113700
99610113781
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 914 (1970-1976)
Price: £9.95
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99610113781/1
Product Information
Sold as PAIR/ Requires 1 pair per engine
Fits:
Porsche 964
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
This product supersedes Porsche's old part numbers:
- 91610113700
- 99310113700
Diagram ref no 29.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610113781
The product you are viewing cross references to these numbers
Product Information
Bearing shell for intermediate shaft (with shoulder). Sold as PAIR/ Requires 1 pair per engine
Fits:
Porsche 964
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
This product supersedes Porsche's old part numbers:
- 91610113700
- 99310113700
Diagram ref no 29.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610113781
99610113780
99310113701
99610113781
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII GT2 RS 2011-13
Price: £11.50
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
99610113781::1
Product Information
Sold as single / Requires 2 per engine
Fits:
Porsche 911
Porsche 964
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
This product supersedes Porsche's old part numbers:
- 91610113700
- 99310113700
Diagram ref no 29.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610113781
The product you are viewing cross references to these numbers
Product Information
Bearing shell for intermediate shaft (with shoulder). Sold as single / Requires 2 per engine
Fits:
Porsche 911
Porsche 964
Porsche 993 1994-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
This product supersedes Porsche's old part numbers:
- 91610113700
- 99310113700
Diagram ref no 29.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610113781
99610113780
02-8005 STD
99610113781
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII GT2 RS 2011-13
Price: £71.05
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
90110512509
Product Information
Genuine Porsche Intermediate Shaft Sprocket is the factory-engineered drive gear that ensures precise timing chain operation in Porsche 911 air-cooled flat-six engines. Mounted on the intermediate shaft, it transfers rotation from the crankshaft to the camshafts, synchronizing valve timing for optimal performance, smooth running, and reliability.
Sold each, 2 required per vehicle.
Fits:
Porsche 911 1970 - 1989
Porsche 964 1989 - 1994
Porsche 993 1995 - 1998
Porsche 996 Turbo / GT2 2001 - 2005
Porsche 997.1 Turbo 2007 - 2009 (Engine type 9770)
Porsche 997.2 Turbo 2010 - 2013 (Engine type 9770)
Diagram ref no 28
Over time, timing gears can develop tooth wear, pitting, or chain-track distortion, leading to slack, noise, or incorrect valve timing.
Replace with a Genuine Porsche part during engine rebuilds or timing service to restore:
• Original chain engagement and cam phasing
• Factory reliability and noise reduction
• Long-term timing accuracy
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110512509
The product you are viewing cross references to these numbers
Product Information
Intermediate Shaft Sprocket / Timing Gear
Genuine Porsche Intermediate Shaft Sprocket is the factory-engineered drive gear that ensures precise timing chain operation in Porsche 911 air-cooled flat-six engines. Mounted on the intermediate shaft, it transfers rotation from the crankshaft to the camshafts, synchronizing valve timing for optimal performance, smooth running, and reliability.
Sold each, 2 required per vehicle.
Fits:
Porsche 911 1970 - 1989
Porsche 964 1989 - 1994
Porsche 993 1995 - 1998
Porsche 996 Turbo / GT2 2001 - 2005
Porsche 997.1 Turbo 2007 - 2009 (Engine type 9770)
Porsche 997.2 Turbo 2010 - 2013 (Engine type 9770)
Diagram ref no 28
Over time, timing gears can develop tooth wear, pitting, or chain-track distortion, leading to slack, noise, or incorrect valve timing.
Replace with a Genuine Porsche part during engine rebuilds or timing service to restore:
• Original chain engagement and cam phasing
• Factory reliability and noise reduction
• Long-term timing accuracy
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110512509
90110512504
90110512509
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
Price: £275.73
In Stock - 24 Hour Dispatch
Shop Securely
12 Month Warranty
Worldwide Delivery
90110512509/1
Product Information
This OE Match Intermediate Shaft Sprocket is designed as a direct-fit replacement for the factory sprocket mounted on the intermediate shaft in many Porsche 911 models. It meshes with the timing chain to drive cam or auxiliary components, maintaining precise synchronization between crankshaft and camshaft assemblies.
Sold each, 2 required per vehicle.
Fits:
Porsche 911 1970 - 1989
Porsche 964 1989 - 1994
Porsche 993 1995 - 1998
Porsche 996 Turbo / GT2 2001 - 2005
Porsche 997.1 Turbo 2007 - 2009 (Engine type 9770)
Porsche 997.2 Turbo 2010 - 2013 (Engine type 9770)
Diagram ref no 28
The sprocket features correctly machined tooth profiles and balanced construction to minimize wear and chain noise. Each gear is dimensionally matched to Porsche factory specifications, guaranteeing perfect alignment, secure fitment, and long service life.
Ideal for use during engine rebuilds, timing chain service, or IMS restoration, this replacement sprocket restores proper chain drive operation and timing integrity to your air-cooled flat-six engine.
• Position: Mounted on the intermediate shaft (IMS) within the timing chain housing
• Function: Transmits rotational motion from the timing chain to cam drive or auxiliary systems, helping to maintain engine valve timing integrity.
• Symptoms of wear: Chain rattle, poor timing, metallic noise, valve timing error
• Benefits: OEM fit and durability, precision-machined teeth, corrosion resistance
• Installation: Direct-fit replacement; replace with new chain and tensioners for optimal timing performance
An intermediate shaft sprocket that’s worn, damaged, or misaligned can introduce timing error, chain slack, noise, or accelerated wear of timing components. Replace it when:
• You are performing a timing chain or IMS overhaul
• You find tooth damage, pitting, or wear
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90110512509
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Product Information
Intermediate Shaft Sprocket / Timing Gear.This OE Match Intermediate Shaft Sprocket is designed as a direct-fit replacement for the factory sprocket mounted on the intermediate shaft in many Porsche 911 models. It meshes with the timing chain to drive cam or auxiliary components, maintaining precise synchronization between crankshaft and camshaft assemblies.
Sold each, 2 required per vehicle.
Fits:
Porsche 911 1970 - 1989
Porsche 964 1989 - 1994
Porsche 993 1995 - 1998
Porsche 996 Turbo / GT2 2001 - 2005
Porsche 997.1 Turbo 2007 - 2009 (Engine type 9770)
Porsche 997.2 Turbo 2010 - 2013 (Engine type 9770)
Diagram ref no 28
The sprocket features correctly machined tooth profiles and balanced construction to minimize wear and chain noise. Each gear is dimensionally matched to Porsche factory specifications, guaranteeing perfect alignment, secure fitment, and long service life.
Ideal for use during engine rebuilds, timing chain service, or IMS restoration, this replacement sprocket restores proper chain drive operation and timing integrity to your air-cooled flat-six engine.
• Position: Mounted on the intermediate shaft (IMS) within the timing chain housing
• Function: Transmits rotational motion from the timing chain to cam drive or auxiliary systems, helping to maintain engine valve timing integrity.
• Symptoms of wear: Chain rattle, poor timing, metallic noise, valve timing error
• Benefits: OEM fit and durability, precision-machined teeth, corrosion resistance
• Installation: Direct-fit replacement; replace with new chain and tensioners for optimal timing performance
An intermediate shaft sprocket that’s worn, damaged, or misaligned can introduce timing error, chain slack, noise, or accelerated wear of timing components. Replace it when:
• You are performing a timing chain or IMS overhaul
• You find tooth damage, pitting, or wear
• You observe abnormal chain noise, jump, or performance loss
Using a fresh sprocket restores the proper tooth engagement, accurate timing, and longevity of the cam drive system, helping avoid expensive engine damage.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90110512509
90110512504
90110512509
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Vehicle Group
Vehicle Group
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Turbo 2010-13
Price: £58.25
In Stock - 24 Hour Dispatch
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12 Month Warranty
Worldwide Delivery
99310591156
Product Information
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Related, superseded, cross reference or alternative numbers for comparison.
99310591156
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Product Information
Intermediate Shaft with Timing Gear Number 0.
Fits:
Porsche 993 1994-98
Click 'Zoom in' for large parts diagram.
Diagram ref no 24
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99310591156
99310591156
99310591154
99310591152
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Vehicle Group
Vehicle Group
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Price: £1,406.47
Orderable - 14 to 28 Days
Shop Securely
12 Month Warranty
Worldwide Delivery
99610113781
Product Information
Fits:
Porsche 911 1965-89
Porsche 914
Porsche 930 Turbo 1975-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
Click 'Zoom in' for large parts diagram.
Diagram ref no 31
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Related, superseded, cross reference or alternative numbers for comparison.
99610113781
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Product Information
Thrust Bearing for Intermediate Shaft. Sold as EACH.Fits:
Porsche 911 1965-89
Porsche 914
Porsche 930 Turbo 1975-89
Porsche 964 1989-94
Porsche 993 1995-98
Porsche 996 Turbo/GT2/GT3
Porsche 997.1 Turbo/GT2/GT3
Porsche 997.2 GT2/GT3
Click 'Zoom in' for large parts diagram.
Diagram ref no 31
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99610113781
99310113701
99310113700
91610113700
9960113780GLY
99610113780
99610113781
The product you are viewing cross references to these numbers
Vehicle Group
Vehicle Group
- Porsche 911 1965-1968 2.0L / 912 SWB (F)
- Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
- Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
- Porsche 911 1978-1983 3.0L / SC
- Porsche 911 1984-1986 3.2L
- Porsche 911 1987-1989 3.2L G50
- Porsche 911 1975-1977 3.0L Turbo (930)
- Porsche 911 1978-1989 3.3L Turbo (930)
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT3 / GT3 RS 2010-11
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 914 (1970-1976)
Price: £71.05
In Stock - 24 Hour Dispatch
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12 Month Warranty
Worldwide Delivery
DISPLAYING 1 to 11 (of 11 products)
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About Intermediate shaft (IMS)
Engine Intermediate shaft (IMS)
Design911 offers a complete selection of IMS (Intermediate Shaft) bearings,
upgrade kits, seals, and related timing components for Porsche engines. The
IMS forms a vital part of the engine’s timing system, and failure of the
bearing is one of the most well-known issues affecting certain Porsche models.
Our range includes OEM parts, high-strength retrofits, and upgraded bearing designs
engineered to offer greater reliability and long-term engine protection.
What IMS Components Are
The Intermediate Shaft is a precision-machined shaft located within the engine block. It connects the crankshaft to the camshafts through timing chains, enabling the valvetrain to operate in perfect synchronisation.
IMS-related products include:
- IMS bearings & upgraded ceramic bearings
- IMS retrofit kits Intermediate shaft assemblies
- IMS seals & replacement hardware
- IMS service tools Timing-chain related components
These parts ensure that the engine’s timing system remains stable, accurately aligned, and smoothly rotating.
What the IMS Does in the Engine
The IMS performs several critical roles:
- Transfers rotational drive from the crankshaft to the camshafts
- Maintains accurate valve timing essential for power and efficiency
- Supports the timing chains under load
- Ensures smooth and coordinated engine operation
- Reduces mechanical stress within the timing system
Without a functioning IMS and bearing, the entire engine’s timing can become compromised.
Why IMS Components Fail
IMS bearing failure is a well-known issue in certain water-cooled Porsche engines (especially early M96/M97 units). Common causes include:
Typical Failure Reasons
- Bearing lubrication failure or oil starvation
- Degraded
bearing seals trapping debris or moisture
- Single-row factory bearing limitations
- High mileage or age-related wear
- Contamination from metal particles
- Thermal stress from repeated heat cycles
A failing IMS bearing can cause catastrophic engine damage — including timing chain failure, valve interference, or complete engine seizure.
Why IMS Parts Should Be Replaced
Replacing or upgrading the IMS system offers several
long-term benefits:
- Prevents catastrophic engine failure
- Improves engine reliability and longevity
- Modern IMS kits feature stronger, better-lubricated bearings
- Recommended during clutch replacement or engine rebuilds
- Increases
vehicle resale value due to documented IMS upgrade
- Provides peace of mind for daily drivers and enthusiasts
Design911 supplies industry-trusted IMS upgrade kits engineered for maximum durability.
This category covers:
- Porsche IMS bearing upgrade kits
- Intermediate shaft replacement for Porsche M96 & M97
- Porsche IMS failure repair components
- Ceramic IMS bearing kits for
- Porsche 911, Boxster & Cayman IMS retrofit solutions for Porsche engine rebuilds
- Porsche timing chain & IMS repair packages
- Early Porsche IMS upgrade parts
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