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Porsche > 924 (1977-1988) > Engine Rebuild Parts >

Radial Seal / RMS / Camshaft / Balance shaft

Radial Seal / RMS / Camshaft / Balance shaft

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DISPLAYING 1 to 11 (of 11 products)
Engine timing oil seal / gasket and hardware set. Porsche 924S / 944 / 968 - 94410010100, 00004306500, 00004306599, 99951002208, 92810513902, 94410532100, 99911328240, 99911328140, 99911342540, 99970165240, 99970160240, 90011906502, 92810513901, 92810513900, 99970159340, 99911323240, 99911322340, 99911326240, 99970159440, 99911334940, 99911333140, 94410716104, 92810518401, 99970728340
1
Engine timing oil seal / gasket and hardware set. Porsche 924S / 944 / 968
SHAFTSEALKIT1
Product Information
Product Information
Engine timing oil seal / gasket set.

oematch

Fits:
Porsche 944
Porsche 968
Porsche 924S

This set provides everything needed to securely reseal the front of your engine. Alongside the oil seals, it includes replacement spacer rings, as the original ones often wear down from contact with the shaft seal lip and require replacement. The set also comes with O-rings and a camshaft both that needs to be replaced.

Contents list:
3 x 944 105 321 00 Gasket
1 x 999 113 349 40 Camshaft Seal
1 x 999 113 281 40 Balance Shaft Seal
2 x 999 113 282 40 Camshaft / Balance Shaft Seal
1 x 999 113 331 40 Oil Pump/Front main seal Seal
1 x 944 107 161 04 Oil Pump Drive Gear
1 x 999 701 602 40 Cam O-Ring
2 x 999 701 652 40 Aux. O-Ring
1 x 928 105 184 01 Sealing Ring
1 x 999 707 283 40 O-ring for oil pump front crankshaft

1 x 999 510 022 08 Camshaft bolt
1 x 928 105 139 05 Camshaft radial seal spacer bush
2 x  928 105 139 02 Balance shaft radial seal spacer bush



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

SHAFTSEALKIT1
94410010100
00004306500
00004306599
99951002208
92810513902
94410532100
99911328240
99911328140
99911342540
99970165240
99970160240
90011906502
92810513901
92810513900
99970159340
99911323240
99911322340
99911326240
99970159440
99911334940
99911333140
94410716104
92810518401
99970728340

The product you are viewing cross references to these numbers
Clear seal radial seal spacer bush. Porsche 924S / 944 / 968 - 94410532100
2
Clear seal radial seal spacer bush. Porsche 924S / 944 / 968
Special Order item
94410532100
Product Information
Product Information
Clear seal radial seal spacer bush. 
Sold each

porsche

Fits:
Porsche 924S - 1986 to 1988
Porsche 944 / 944 S / 944 S2 - 1982 - 1991
Porsche 944 turbo - 1985 yo 1991
Porsche 968 - 1992 to 1995

Fits behind camshaft seal spacer and balance shaft seal spacers.

Click 'Zoom in' for large parts diagram.
Diagram ref no 5



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94410532100
94410532100

The product you are viewing cross references to these numbers
Engine timing oil seal / gasket set. Porsche 944 / 968 - 94410010100, 00004306599, 00004306500
1
Engine timing oil seal / gasket set. Porsche 944 / 968
Special Order item
00004306500
Product Information
Product Information
Engine timing oil seal / gasket set. 

porsche

Fits:
Porsche 944
Porsche 968
Porsche 924S

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

00004306500
94410010100
00004306599
00004306500

The product you are viewing cross references to these numbers
Engine timing oil seal / gasket set. Porsche 944 / 968 - 94410010100, 00004306500, 00004306599
1
Engine timing oil seal / gasket set. Porsche 944 / 968
00004306500/1
Product Information
Product Information
Engine timing oil seal / gasket set
This OE Match engine timing dust seal and gasket set is designed for Porsche 944 and Porsche 968 models. The kit contains the seals and gaskets used around the front timing and balance shaft area of the engine, helping protect the timing components and maintain proper sealing of the front engine housing.

Fits:
Porsche 944
Porsche 968
Porsche 924S

Contents list:
3 x 944 105 321 00 Gasket
2 x 999 113 281 40 Aux. Shaft Seal
2 x 999 113 282 40 Camshaft seal Aux. Shaft Seal
1 x 999 113 331 40 Oil Pump/Front main seal Seal
1 x 999 113 349 40 Cam Seal
1 x 999 701 602 40 Cam O-Ring
2 x 999 701 652 40 Aux. O-Ring
1 x 928 105 184 01 Sealing Ring
1 x 999 707 283 40 O-ring for oil pump front crankshaft

The timing section of the Porsche 944/968 engine contains critical rotating components including the camshaft, balance shafts and crankshaft, all protected by covers and seals at the front of the engine. The OE Match dust seal and gasket set provides the sealing elements required when servicing this area.

The kit includes seals and gaskets designed to prevent contamination and leakage around the timing housing. These components are typically replaced during timing belt service, front engine resealing or engine rebuild work.

High-quality gasket materials are used to withstand the temperature, oil exposure and mechanical stresses present in performance engines.

Function
•  Leak Prevention: Seals the front timing housing to prevent oil leakage
•  Component Protection: Keeps dust and debris away from timing components
•  Engine Reliability: Supports proper operation of camshaft and balance shafts
•  Service Solution: Ideal for timing belt replacement or front engine rebuild

Seals and gaskets around the timing assembly are exposed to heat, oil and constant engine vibration. Over time these components can harden, crack or lose elasticity, leading to oil leaks or contamination of the timing area. Replacing them during maintenance helps protect the timing components and maintain engine reliability.

Consider replacing the timing dust seal and gasket set when:
•  Performing a timing belt replacement
•  Rebuilding or resealing the front of the engine
•  Oil leaks appear from the timing cover area
•  Old seals show cracking or deterioration

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

00004306500
94410010100
00004306500
00004306599

The product you are viewing cross references to these numbers
Lock Ring For Balance Shaft. Porsche 924S / 944 1982-86 - 94410114502, 94410114500
3
Lock Ring For Balance Shaft. Porsche 924S / 944 1982-86
Special Order item
94410114502
Product Information
Product Information
Lock Ring For Balance Shaft.
Sold Each.
x2 Required Per Car.

Fits:
Porsche 924S 2.5L 1986>>1986
Porsche 944 2.5L V8 1982>>1987

Diagram Ref No 15

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

94410114502
94410114502
94410114500

The product you are viewing cross references to these numbers
O-Ring seal balance shaft housing 56,7x3.53 Porsche 924S / 944 / 968 - 99970165240
2
O-Ring seal balance shaft housing 56,7x3.53 Porsche 924S / 944 / 968
Special Order item
99970165240
Product Information
Product Information
O-Ring seal balance shaft housing - 56,7 x 3.53 
Sold each - 2 required per car

porsche

Fits:
Porsche 924S - 1986 to 1988
Porsche 944 8v - 1982 to 1987
Porsche 944 S / 944 S2 - 1987 to 1991
Porsche 944 turbo - 1985 to 1991
Porsche 968 - 1992 to 1995

Click 'Zoom in' for large parts diagram.
Diagram ref no 21



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99970165240
99970165240

The product you are viewing cross references to these numbers
O-Ring seal camshaft bearing 50x5. Porsche 924S / 944 / 928 - 99970160240
2
O-Ring seal camshaft bearing 50x5. Porsche 924S / 944 / 928
Special Order item
99970160240
Product Information
Product Information
O-Ring seal camshaft bearing - 50x5
Sold each

porsche

Fits:
Porsche 924S - 1986 to 1988
Porsche 944 8v - 1982 to 1987
Porsche 944 turbo - 1985 to 1991
Porsche 928 / 928 S / 928 S2 - 1978 to 1986

Click 'Zoom in' for large parts diagram.
Diagram ref no 21



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99970160240
99970160240

The product you are viewing cross references to these numbers
Rear mail oil seal. Porsche 924 / 924 turbo 1976-85 - 059103051D
2
Rear mail oil seal. Porsche 924 / 924 turbo 1976-85
Special Order item
059103051D
Product Information
Product Information
Rear main oil seal 

Fits:
Porsche 924 2.0ltr - 1976 to 1985
Porsche 924 turbo - 1979 to 1985

Inner Diameter - 96mm
Outer Diameter - 117mm
Height - 12,mm

Diagram ref no 9



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

059103051D
059103051D

The product you are viewing cross references to these numbers
Rear mail oil seal. Porsche 924 / 924 turbo 1976-85 - 059103051D - 81-20589-20
3
Rear mail oil seal. Porsche 924 / 924 turbo 1976-85
059103051D/1
Product Information
Product Information
Rear main oil seal 

Fits:
Porsche 924 2.0ltr - 1976 to 1985
Porsche 924 turbo - 1979 to 1985

Inner Diameter - 96mm
Outer Diameter - 117mm
Height - 12,mm

Diagram ref no 9



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

059103051D
059103051D

The product you are viewing cross references to these numbers
Rear Main Oil Seal. Porsche 964 / 993 / 996 - 99911342641, 311.898, 21074, 569.120
2
Rear Main Oil Seal. Porsche 964 / 993 / 996
Special Order item
99911342641::1
Product Information
Product Information
Rear Main Oil Seal. 90 x 110 x 12.
Fitting Position: Transmission End, Inner Diameter: 90 mm, Outer diameter: 110 mm, Width: 12 mm, Radial Shaft Seal Design

porsche

Fits:
Porsche 964 1989-94
Porsche 993 1994-98
Porsche 996 Turbo / GT2 / GT3 MKI

Porsche 944 - All models including 944S, 944 Turbo & 944S2 built 1982-1991

Porsche 924S - All models built 1986-1988

Porsche 928 - All models built 1986-1995

Porsche 968 - All models built 1992-1995


Click 'Zoom in' for large parts diagram.
Diagram Ref No. 21



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99911342641
99911342641
311.898
21074
569.120

The product you are viewing cross references to these numbers
Rear main oil seal. Porsche 964 / 993 / 996 - 99911342641, 21074, 99911321440, 99911321540, 99911324240, 99911326440, 99911327040, 99911342640, 99911342641, 99911346140, 569.120
3
Rear main oil seal. Porsche 964 / 993 / 996
99911342641/1
Product Information
Product Information

Rear Main Oil Seal for Porsche 

Restore engine sealing integrity and prevent costly oil leaks with this OE Match Rear Main Oil Seal for the Porsche 964, Porsche 993 and Porsche 996. Manufactured to OE specifications and measuring 90mm inner diameter, 110mm outer diameter and 12mm width, this critical engine seal is designed to prevent engine oil escaping around the rear of the crankshaft where it exits the engine case and connects to the flywheel assembly.

Fits:

  • 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 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94
  • Porsche 928 4.5L 1978-82
  • Porsche 928S 4.7L 1981-83
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Diagram Ref No. 21

The rear main oil seal, often referred to as the RMS (Rear Main Seal), is one of the most important sealing components in the engine. It retains engine oil inside the crankcase while allowing the crankshaft to rotate at high speed. A worn or damaged seal can lead to oil leaks, clutch contamination and unnecessary engine maintenance costs if left unattended.

This OE Match replacement provides the correct fit, sealing performance and durability required for maintenance, engine rebuilds and preventative servicing.

What Does the Rear Main Oil Seal Do?

The rear main oil seal forms a seal around the rear section of the crankshaft.

Its primary functions include:

  • Preventing engine oil leaks
  • Sealing the rear crankshaft opening
  • Protecting the flywheel area from contamination
  • Maintaining correct engine oil levels
  • Preventing oil reaching the clutch assembly
  • Supporting long-term engine reliability
  • Allowing smooth crankshaft rotation

Without a properly functioning rear main seal, oil can escape from the engine and create a range of reliability issues.

Why Do Rear Main Oil Seals Fail?

Like all rubber sealing components, rear main oil seals are subject to wear and ageing.

Common causes of failure include:

  • Heat cycling
  • Age-related hardening
  • Crankshaft wear
  • Engine vibration
  • Long-term oil exposure
  • Improper installation
  • Excessive crankcase pressure
  • High mileage use

Over time, the sealing lip can lose flexibility and its ability to maintain consistent contact with the crankshaft surface.

Symptoms of a Failing Rear Main Oil Seal

Common warning signs include:

  • Oil leaks between engine and gearbox
  • Oil drips beneath the vehicle
  • Oil contamination around the flywheel housing
  • Clutch slip caused by oil contamination
  • Burning oil smell
  • Gradual oil level loss
  • Oil residue on transmission bellhousing

Because the seal is located behind the flywheel, leaks can often be mistaken for other engine oil leaks unless properly diagnosed.

When Should the Rear Main Oil Seal Be Replaced?

Replacement is recommended when:

  • Oil leakage is present
  • The gearbox is being removed
  • Replacing the clutch assembly
  • Rebuilding the engine
  • Refurbishing the crankshaft
  • Carrying out preventative maintenance
  • The original seal shows signs of ageing
  • Engine mileage is high

Many Porsche specialists recommend replacing the rear main seal whenever the clutch or flywheel is removed, as labour access is significantly easier during these procedures.

Why Replacement Matters

A leaking rear main oil seal can lead to far more expensive repairs if ignored.

Benefits of replacement include:

  • Prevention of engine oil leaks
  • Protection of the clutch assembly
  • Improved engine cleanliness
  • Reduced maintenance costs
  • Improved reliability
  • Professional rebuild standards
  • Long-term sealing performance
  • Greater peace of mind

Replacing the seal during clutch or engine work is considered a smart preventative maintenance measure.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99911342641
99911342641
21074
99911321440
99911321540
99911324240
99911326440
99911327040
99911342640
99911342641
99911346140
569.120

The product you are viewing cross references to these numbers
DISPLAYING 1 to 11 (of 11 products)
Also found on these pages
About Radial Seal / RMS / Camshaft / Balance shaft

Radial Oil Seals – Precision Engine Sealing for Porsche Performance and Reliability

The radial oil seals in your Porsche engine — including the rear main seal, camshaft seal, balance shaft seal, and crankshaft seal — are critical to maintaining oil pressure, preventing leaks, and protecting your engine’s moving components. These seals keep lubricating oil contained within the engine while keeping out dust and contaminants, ensuring smooth operation and long-term reliability.

At Design911, we offer a complete range of radial oil seals developed for exceptional fitment and performance across classic and modern Porsche models. Manufactured from high-grade elastomers and reinforced materials, these seals withstand extreme temperatures, oil pressure, and rotational speeds. Whether you’re rebuilding a classic 911 engine or maintaining a modern turbocharged model, our manufacturer-quality seals provide the leak-free performance your Porsche deserves.

What Do Radial Oil Seals Do?

Radial oil seals (also known as shaft seals or lip seals) provide a vital barrier between rotating and stationary engine components.

Core Functions:

  • Seal engine oil within the crankcase and camshaft housings.
  • Prevent external contaminants from entering the lubrication system.
  • Maintain correct oil pressure for optimal engine performance.
  • Reduce friction and wear on critical rotating components.
  • Enhance engine longevity by ensuring consistent lubrication.

Each seal — whether on the crankshaft, camshaft, or balance shaft — contributes to maintaining an efficient, leak-free lubrication system.

Why Do Radial Oil Seals Fail?

Over time, oil seals are exposed to high heat, pressure, and chemical degradation, which can cause them to harden or crack. Once they lose flexibility, oil begins to escape — leading to contamination, reduced lubrication, and potential engine damage.

Common Causes of Failure Include:

  • Age-related hardening and loss of elasticity.
  • Excessive crankcase pressure from blocked breathers.
  • Oil contamination that breaks down sealing material.
  • Heat and friction causing surface wear.
  • Improper installation or alignment issues during rebuilds.

Typical signs of failure include oil leaks around the rear of the engine, oil spots under the car, or visible seepage near timing covers or crankshaft pulleys. Addressing these early prevents more serious damage.

Why Replace Radial Seals?

Replacing worn or leaking radial oil seals is essential for preventing oil loss and protecting your Porsche engine’s internal components. Our high-performance seals are designed to meet or exceed manufacturer standards for sealing efficiency, durability, and temperature resistance.

Key Benefits:

  • Restores proper oil sealing and pressure.
  • Prevents leaks and contamination.
  • Resists high heat, oil exposure, and chemical degradation.
  • Reduces wear on crankshaft and camshaft housings.
  • Ensures long-term reliability and performance.
  • Direct-fit compatibility for Porsche 911, Cayman, Boxster, Panamera, Cayenne and more.

Replacing these seals during engine service or rebuilds helps preserve oil integrity, reduce emissions, and protect against costly repairs.

Highlights:

  • High-quality radial oil seals for Porsche engines.
  • Rear main, camshaft, balance shaft, and crankshaft seal options.
  • Heat- and oil-resistant construction for maximum longevity.
  • Designed to handle high RPM and oil pressure conditions.
  • Perfect for rebuilds, upgrades, and preventive maintenance.
  • Engineered for a precision fit and long-term leak-free operation.

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