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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 17 to 32 (of 66 products)
1 2 3 4 >>
95B698151BB/1
Product Information
Product Information
Brake pads SET OF 4 for one axle.
front
Porsche Macan Turbo 400Bhp (Red caliper cars)
Porsche Macan Turbo 440Bhp (Red caliper cars)
Porsche Macan GTS (Red caliper cars)

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95B698151BB
95B698151C
97035194904
95B698151BB

The product you are viewing cross references to these numbers
99135512584/1
Product Information
Product Information
Brake booster servo. 

Fits:
  • Porsche Boxster Spyder 3.8L 2016
  • Porsche Boxster Spyder 718 4.0L (420 Bhp)
  • Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
  • Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
  • Porsche 991 Turbo Coupe 3.8L (540 Bhp)
  • Porsche 991 Turbo S Coupe 3.8L (580 Bhp)
  • Porsche 991 Turbo Cabriolet 3.8L (540 Bhp)
  • Porsche 991 Turbo S Cabriolet 3.8L (580 Bhp)
  • Porsche 991 R 4.0L (500 Bhp)
  • Porsche 991 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp)
  • Porsche 991 GT2 RS 3.8L PDK (700 bhp)
  • Porsche 991 Speedster
  • Porsche Cayman GT4 3.8L 2015-16
  • Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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99135512584
PSA641
99135512582
99135512583
99135512584

The product you are viewing cross references to these numbers
95B612107N/1
Product Information
Product Information
Brake booster servo. 

Fits:
Porsche 95B.2 Macan - 04/04/2019 Onwards
cars with

1KD - Rear disc brakes 17", black calipers
1LA - Front disc brakes 17", black calipers
1LE - Front disc brakes 17", black calipers

Diagram ref no 4

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95B612107N
95B612107N

The product you are viewing cross references to these numbers
91110541120/3KIT
Product Information
Product Information

Engine cylinder head inlet valve kit - TRW
Kit contains TRW inlet valve x 6


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



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Related, superseded, cross reference or alternative numbers for comparison.

91110541120
91110541120
911.105.411.20
1013.002
91110541100

The product you are viewing cross references to these numbers
91110541550/3KIT
Product Information
Product Information
Engine cylinder head exhaust valve kit - TRW. 
Kit contains TRW exhaust valve x 6

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



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91110541550
91110541500
91110541550
1041.239
3064
13388

The product you are viewing cross references to these numbers
99335591000/1
Product Information
Product Information
Brake master cylinder - generates the hydraulic pressure required for the vehicle’s braking system and provides correct brake pedal feel and response.
Fits:
Porsche 993 C2 1995 - 1998
Diagram ref no 9
The brake master cylinder is a core hydraulic component in the braking system that converts the mechanical force from the brake pedal into hydraulic pressure. This pressure is transmitted through brake lines to the brake calipers at each wheel, enabling the vehicle to slow and stop effectively. Proper function of the master cylinder is essential for consistent brake feel and safe stopping performance.
The brake master cylinder is essential for safe operation of the brake system. Over time, internal seals and components can wear, leading to:
• Soft or spongy brake pedal feel
• Reduced hydraulic pressure
• Inconsistent stopping distances
• Visible fluid leaks under the dash or near the cylinder.
Replacing a worn or failing master cylinder with a TRW replacement restores proper hydraulic pressure, improves brake responsiveness, and enhances overall safety - especially critical on performance vehicles like the Porsche 911.
Replace this master cylinder if you notice:
• Brake pedal sinks or feels spongy
• Decreased brake performance
• Internal or external fluid leaks
• During a full brake system overhaul or restoration
• When upgrading to OEM-spec braking components

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99335591000
99335591000

The product you are viewing cross references to these numbers
99633306904/1
Product Information
Product Information
Drop link, Rear.
Fits: Left and Right. Sold each.

rear
Porsche 996 C2 1997-05 (Rear)
Porsche 996 C4 1997-05 (Rear)
Porsche 996 TURBO 2000-05 (Rear)

Diagram ref no 5

Other OE Reference numbers:
- 99633306902 / 996.333.069.02
- 99633306903 / 996.333.069.03

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99633306904
99633306904
99633306903
99633306902

The product you are viewing cross references to these numbers
477611055E/1
Product Information
Product Information
Wheel brake cylinder 19.05mm.
REAR

rear
Porsche 924 / 924 Turbo 1976-80

Click 'Zoom in' for large parts diagram.
Diagram ref 8

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477611055E
47611055E
2775

The product you are viewing cross references to these numbers
95534124204/2
Product Information
Product Information
Front lower arm bush.
Fits:
Porsche 955 Cayenne MKI 2003-06
Porsche 957 Cayenne MKII 2007>>
Click 'Zoom in' for large parts diagram.
Diagram ref No 18.

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95534124204
95534124204
95534124203
9553412420
113194
30891 01
1140205700
38811
100 610 0010

The product you are viewing cross references to these numbers
93010432150/1
Product Information
Product Information
Valve guide 1st oversize - Inlet and exhaust
The TRW 1st oversize valve guide (93010432150) is an OEM-quality engine component designed for classic Porsche 911 models from 1965 to 1989. Suitable for both inlet and exhaust valve applications, this oversize valve guide is commonly used during engine rebuilding or cylinder head refurbishment where the original guide bore has worn beyond standard specification.
Sold individually, 12 required per engine.

Fits:
Porsche 911 1965 - 1989

Outer diameter: 13,26 mm,
Bore Ø: 9,00 mm,
Length: 51,20 mm,
Fitting Position: Intake Side

Diagram Ref No 2.

Valve guides play a critical role in engine operation by supporting and accurately guiding the movement of the valves within the cylinder head. Proper valve guide clearance is essential for maintaining valve alignment, controlling oil consumption, ensuring effective sealing, and supporting reliable engine performance. Worn valve guides can lead to excessive oil consumption, smoke from the exhaust, valve instability, and reduced engine efficiency.

Manufactured by TRW, a respected OEM supplier of precision engine components, this 1st oversize guide is engineered for rebuild applications where the cylinder head has been machined to accept a larger guide diameter. Produced from durable, heat-resistant materials, it is designed to withstand the demanding temperatures and operating conditions of air-cooled Porsche flat-six engines while maintaining long service life and precise valve control.

Ideal for engine restorations, performance rebuilds, or preventative maintenance, this valve guide helps restore correct valve train geometry and reliable cylinder head operation.

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93010432150
93010432150
93010432150
81-3037

The product you are viewing cross references to these numbers
99634732203/1
Product Information
Product Information
Track rod inner joint.
Price is for each.
Fits:
Porsche 986 Boxster 1997-05
Porsche 996 1998-05
Porsche 996 Turbo / GT2 / GT3
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.
Click 'Zoom in' for large parts diagram.
Diagram Ref No 6.

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99634732203
996.347.322.03
99634732203
99634732203
99634732203
99634732203
99634732203
4160310002
58090

The product you are viewing cross references to these numbers
97035591001/1
Product Information
Product Information
Brake master cylinder.

Fits:
Porsche 970 Panamera 2010-16

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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97035591001
97035591001
97035591000
PMK541

The product you are viewing cross references to these numbers
95535240131TRW
Product Information
Product Information
Brake disc rotor L or R
rear
Porsche Cayenne (955) 3.2L V6 REAR
Porsche Cayenne (955) 4.5L S REAR
Porsche Cayenne (955) 4.5L Turbo REAR
Porsche Cayenne (957) 3.6L V6 REAR
Porsche Cayenne (957) 4.8L S REAR
Porsche Cayenne (957) 4.8L GTS REAR
Porsche Cayenne (957) 3.0L DIESEL MKII REAR
Porsche Cayenne (958) V6 3.0L DIESEL REAR
Porsche Cayenne (958) 4.2L DIESEL REAR
Porsche Cayenne (958) V6 3.0L HYBRID REAR
Porsche Cayenne (958) V8 4.8L S REAR
*For cars with 430mm/17" disc and BLACK calipers
option code: I1KW
OR
*For cars with 430mm/17" disc and SILVER calipers
option code: I1KY
Brake disc rotors are priced each.

Related reference numbers
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95535240131TRW
95535240131
7L6615601D
7L6615601J
7L8615601C
95535240130
95535240131
09A05611

The product you are viewing cross references to these numbers
91135295007TRW
Product Information
Product Information
Brake pads, Front or Rear.
Width: 61 mm, Height: 56 mm
rear
Porsche 911 3.2L 1984-89
front
Porsche 914-6

Porsche 356C
Sold as set of 4 pads for one axle.



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91135295007TRW
91135295006
91135295007

The product you are viewing cross references to these numbers
99735294701TRW
Product Information
Product Information
Brake pads set of 4 for one axle


  
rear
Porsche Porsche 997GT3 / 997GT3RS REAR
*for cars with Steel disc
Sold as set of 4 pads for one axle.



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99735294701TRW
99735294701

The product you are viewing cross references to these numbers
99735194702TRW
Product Information
Product Information
Brake pads set of 4 for one axle
front
Porsche 911 (997) Turbo FRONT
*For cars with Steel Disc
Porsche 911 (997) GT3 FRONT
*For cars with Steel Disc
Sold as set of 4 pads for one axle.

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99735194702TRW
23414
99735194701
99735194702

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DISPLAYING 17 to 32 (of 66 products)
1 2 3 4 >>