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Design911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk Facebook Instagram

TRW

TRW
About TRW

TRW for Porsche

The highly professional TRW innovation team are completely focused on creating the most advanced Porsche products on the market, always engineered and tested to the highest possible standards. This means that we are able to deliver the most efficient, safe and durable Steering and Suspension products to you and to your customers.As one of the world’s largest aftermarket suppliers vital parts in OE-quality, we have a heritage that goes back one hundred years. With a wealth of diverse experience, we have fine-tuned our manufacturing processes and concentrated on satisfying customers much longer than most, so you can trust us to deliver, whether you need a simple car shock absorber or the latest cutting edge system for aftermarket steering parts

A Quick Look at TRW

TRW information on this page is based on details supplied by the manufacturer or distributor, plus any OE references provided with the parts.

Choosing the Right Fit for Your Porsche

Where TRW is listed for Porsche, use the supplied model coverage and OE references to confirm suitability. Check details that commonly affect fitment such as model year, side/position, and connector type where relevant.

  • Typical reasons to choose or replace TRW parts include refreshing worn suspension or steering joints, restoring braking performance, and addressing age-related wear without guesswork.
  • Common real-world issues in this area include steering play, knocking over bumps, brake vibration, and uneven braking, often linked to worn ball joints or tie rods, seized calipers, old brake fluid, or incorrect installation torque.
  • For safety-critical parts such as brakes and steering, watch for symptoms like pulling, vibration, or abnormal noises and investigate before they worsen.
  • After any significant steering or suspension work, have the alignment checked and re-confirm torque settings after a short bedding-in period.
  • When renewing left/right components such as dampers or control arms, replacing in pairs helps maintain balanced handling and predictable behaviour.
  • Use service intervals and visible wear (perishing, leaks, excessive play) as cues for planning preventative replacement rather than waiting for a clear failure.

Browse by Category

If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the wording grounded.

Suspension & Axle — Suspension and axle components cover shocks, springs, arms, bushes, and joints that keep your Porsche stable, comfortable, and safe. Replacement is usually driven by wear, knocks over bumps, uneven tyre wear, or a general loss of ride and handling precision.

  • After suspension work, plan for an alignment check and road test to confirm there is no remaining play or noise.
  • Diagnose knocks and vibration carefully; multiple worn bushes or joints can contribute at once.

Ball Joints — Ball joints are safety-critical pivot points in the suspension that control steering precision and geometry. They are typically replaced when there is play, clunking, vague steering, or uneven tyre wear, restoring stability and confidence under braking and cornering.

  • Check associated arms and bushes at the same time; fitting a new joint into a worn arm can be false economy.
  • Plan on a wheel alignment after ball joint replacement to keep tyre wear and handling in check.

Shock Absorbers FRONT — Front shock absorbers are changed when damping fades, oil leaks appear, or the car feels floaty, unstable under braking, or unsettled over bumps. Choosing suitable front dampers helps bring back ride control, braking stability, and steering feel on your Porsche.

  • Replace front shocks in left/right pairs to avoid uneven behaviour and unpredictable grip under braking.
  • Consider renewing top mounts and related hardware if there are noises or high mileage on the existing parts.

Porsche Standard — Standard front suspension options are ideal when you want to retain the original Porsche balance of comfort and control. They are typically chosen during refresh work to keep the car close to factory behaviour rather than moving to a firmer or more focused setup.

  • If chasing knocks or poor ride, inspect the full suspension system; issues are not always limited to dampers alone.
  • Match standard components with appropriate springs and mounts so the system works as designed.

Special Offer Parts — Special offer parts can help reduce costs when tackling known Porsche wear items or grouped maintenance jobs. They are often used for routine service components or common refresh work, provided the part numbers and fitment details match your specific model.

  • Always confirm compatibility by model, year, and specification before buying offer items, as returns can be inconvenient once the car is apart.
  • Use offers to plan batches of work—combining service items or wear components can save on repeated labour.

Explore TRW at Design911

View the current TRW range for Porsche at Design911, then filter by model and category to narrow down to the right parts.

DISPLAYING 33 to 48 (of 66 products)
<< 2 3 4 5
477419815/2
Product Information
Product Information
Track rod end. Porsche 924GT/924S/944 82-86
Fits:
Porsche 924 GT 1981-82 Manual steering cars
Porsche 924S 1986-88 Cars with Power Steering
Porsche 944 1982-86 Cars with Power Steering
Porsche 944 1982-83 Cars with Manual Steering upto chassis:
- WP0ZZZ94ZDN402644 LHD cars
- WP0ZZZ94ZDN402812 RHD cars
The steering rack controls the front wheels by means of two track rods, terminated by replaceable joints - the "Track Rod Ends", attached to the swivel hubs. These will eventually wear, leading to problems with steering and handling, as well as being a failure point on the UK MOT and presumably on the statutory inspections in other countries.
Price is for each

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

477419815
94434733300
477419811
477419815

The product you are viewing cross references to these numbers
99634307305/1
Product Information
Product Information
Drop link Front.
Fits - Left and Right side, Sold each.

Fits:
Porsche 996 C4 1997-2005
Porsche 996 C4S 2000-2005
Porsche 996 TURBO 2000-2005

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

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

99634307305
996.343.73.05
99634307305
99634307301
99634307302
99634307303
99634307304

The product you are viewing cross references to these numbers
478721171/2
Product Information
Product Information
Clutch master cylinder for Right hand drive cars only

Fits:
Porsche 924 1980-85
Porsche 924S 1986-88
Porsche 944 1982-88

A clutch that is engaged/disengaged via hydraulic fluid instead of a cable uses a Clutch Master and Clutch Slave Cylinder. When depressing the clutch pedal a lever is squeezed, forcing hydraulic fluid through hydraulic lines to a "slave cylinder" which houses a piston. The piston forces a push rod to engage or disengage the clutch. A clutch master cylinder that contains the hydraulic fluid sits on a support har near the clutch lever. When either the Master or Slave Cylinder fail the clutch is unable to be disengaged.

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

478721171
478721171
92842319100
PNA106

The product you are viewing cross references to these numbers
99735591031/1
Product Information
Product Information
Brake master cylinder.

Fits:
Porsche 997 C4S 3.8L 2005>>
Porsche 997 TURBO 2007>>
Porsche 997 GT3 2007-11

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

99735591031
99735591030
99735591031
PMN166

The product you are viewing cross references to these numbers
93010432100/2
Product Information
Product Information
Valve guide standard. Inlet and exhaust.
12 per engine

Fits:
Porsche 911 1965-89

Inner diameter 9,00 mm
Outer diameter 13,05 mm
Total Length 51,00 mm

Click 'Zoom in' for large parts diagram.
Diagram Ref No 2 and 2A.

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

93010432100
93010432100
81-3036
884412-4

The product you are viewing cross references to these numbers
94410432801/1
Product Information
Product Information
Valve guide standard size.
Fits:
Porsche 924S 1986-88
Porsche 944 1982-89
Porsche 944 S, S2 1987-91
Porsche 928 1978-96
Outer diameter [mm] 13,06 mm
Bore Ø [mm] 9,00 mm
Length [mm] 40,50 mm
Click 'Zoom in' for large parts diagram.
Diagram Ref No 6.

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94410432801
94410432801
81-30108

The product you are viewing cross references to these numbers
94410432851/1
Product Information
Product Information
Valve Guide 0.20mm 1st Oversize. Inlet and exhaust.
Fits:
Porsche 924S 1986-88
Porsche 944 1982-89
Porsche 928 1978-96
Outer diameter [mm] 13,26 mm
Bore Ø [mm] 9,00 mm
Length [mm] 40,50 mm
Click 'Zoom in' for large parts diagram.
Diagram Ref No 6.

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94410432851
94410432851
81-30109

The product you are viewing cross references to these numbers
96410432100/1
Product Information
Product Information
Valve guide standard size.

Fits:
Porsche 964 C2 / C4 1989-94

Click 'Zoom in' for large parts diagram.
Diagram Ref No 2, 2A.

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

96410432100
96410432152
96410432100
96410432102
96410432150
81-30106
81-30104

The product you are viewing cross references to these numbers
99610527102/1
Product Information
Product Information
Inlet valve.

Fits:
Porsche 996 3.6L 2001>> M96.03
Porsche 997 3.8L M97.01
Porsche 997 3.6L M96.05
Porsche 987 Boxster 3.4L

Click 'Zoom in' for large parts diagram.
Diagram Ref No 9.

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99610527102
99610527102
99610527102
9961052710
300100
99610527100

The product you are viewing cross references to these numbers
99610527304/1
Product Information
Product Information
Exhaust valve.
Fits:
Porsche 996 3.6L 2001>> M96.03
Porsche 997 3.8L M97.01
Porsche 997 3.6L M96.05
Porsche 987 Boxster 3.4L
Click 'Zoom in' for large parts diagram.
Diagram ref no 9.

Related reference numbers
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99610527304
99610527301
99610527303
99610527304
300101

The product you are viewing cross references to these numbers
91110541120/3
Product Information
Product Information
Engine cylinder head inlet valve.
Fits:

Porsche 911 T / E / S 2.2ltr - 1970 to 1971
Porsche 911 T / E / S 2.4ltr - 1972 to 1973
Porsche 911 2.7 Carrera MFI - 1973 to 1976
Porsche 911 / S 2.7ltr CIS - 1974 to 1977

Diameter - 46mm

Click 'Zoom in' for large parts diagram.
Diagram Ref No 9.

Related reference numbers
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91110541120
91110541120
911.105.411.20
1013.002
91110541100

The product you are viewing cross references to these numbers
91110541550/3
Product Information
Product Information
Engine cylinder head exhaust valve.
Fits:

Porsche 911 T / E / S 2.2ltr - 1970 to 1971
Porsche 911 T / E / S 2.4ltr - 1972 to 1973
Porsche 911 / S 2.7ltr - 1974 to 1977
Porsche 911 2.7 Carrera - 1974 to 1976

Diameter - 40mm

Click 'Zoom in' for large parts diagram.
Diagram Ref No 10.

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

91110541550
91110541500
91110541550
1041.239
3064
13388

The product you are viewing cross references to these numbers
95534102702/2
Product Information
Product Information
Front upper wishbone. Fits left or right side. Sold each.
Fits:
Porsche 955 Cayenne MKI 2003-06
Porsche 957 Cayenne MKII 2007>>
Click 'Zoom in' for large parts diagram.
Diagram ref No 11.

Related reference numbers
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95534102702
95534102700
95534102701
95534102702
1140105400
7L0407021A
37154061500
7L0407021B
7L0407021
12-021B

The product you are viewing cross references to these numbers
99134104306/1KIT
Product Information
Product Information
Fork control arm FRONT.
SET OF 2
.

Fits:
Porsche Boxster 981 2012 - 2016
Porsche Boxster 982 (718)  2017 >>
Porsche Cayman 981C 2014 - 2016
Porsche Cayman 982C (718C)  2017 >>
Porsche 991.1 Carrera 2012 - 2016
Porsche 991.1 Turbo 2014 - 2016
Porsche 991.1 GT3 / GT3 RS 2014 - 2016
Porsche 991.2 Carrera 2016 - 2019
Porsche 991.2 Turbo 2016 - 2019
Porsche 991.2 R / GT3 4.0L / GT3 RS 4.0L 2016 - 2019

Diagram ref No 5

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99134104306
99134104302
3852501
99134104301
9913410430
99134104304
99134114302

The product you are viewing cross references to these numbers
99734732201/1KIT
Product Information
Product Information
Track rod inner joint kit with bellow. SET OF 2

Fits:
Porsche 987 BOXSTER ALL
Porsche 987C CAYMAN ALL
Porsche 997 ALL

The steering rack controls the front wheels by means of two track rods, terminated by replaceable joints - the "Track Rod Ends", attached to the swivel hubs. These will eventually wear, leading to problems with steering and handling, as well as being a failure point on the UK MOT and presumably on the statutory inspections in other countries.

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

99734732201
99734732200
99734732201
997.347.322.01
3544401
4160310000
58172
99734732201
99734732201
99734732201
99734732201
99734732201

The product you are viewing cross references to these numbers
98733104304/1KIT
Product Information
Product Information
Control arm lower rear. SET OF 2
(TRW are the Original Manufacture for Porsche)
Fits:
Porsche Boxster 987
Porsche Cayman 987C
Please click 'Zoom in' to see the diagram (No 8)

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98733104304
98733104302
98733114302

The product you are viewing cross references to these numbers
DISPLAYING 33 to 48 (of 66 products)
<< 2 3 4 5