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Details
| Specification | Value |
|---|---|
| Brand | TRW |
| MPN | psa908 |
| Category | power brake booster |
| Manufacturer Restriction | TRW |
OE numbers (2)
Search by this OE number to find compatible parts
- BMW—1 165 541
- BMW—34 33 1 165 541
Where this part fits
Original-fit position for OE 34331165541. The red ring marks where this part installs on the vehicle.
About this product
When power brake booster performance matters, the TRW PSA908 delivers — built to the same dimensional and material standards as the original part it replaces. The part is built to the following specification: Manufacturer Restriction: TRW. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. This part supersedes original equipment references: 1 165 541, 34 33 1 165 541, 4110908. Matching these numbers confirms a like-for-like replacement with no loss of function. TRW is a recognised supplier of automotive braking components to independent workshops and dealer networks across Europe. All parts are sourced from authorised distribution channels and carry full manufacturer traceability — you receive exactly the same component supplied to professional garages and dealer workshops. If fitment or specifications do not match your vehicle, our technical team can help identify the correct alternative — use the vehicle selector or contact us with your VIN for a guaranteed-fit recommendation. Replacing worn components on schedule preserves your vehicle's safety, reliability, and resale value — and aftermarket parts from established brands deliver OEM-equivalent performance at a fraction of the dealer price. Every part is dispatched with tracked delivery and a 14-day money-back guarantee with hassle-free returns.
About TRW
TRW Automotive, with roots dating back to 1901 in Cleveland, USA, is a global leader in safety-critical automotive components, now part of ZF Friedrichshafen. TRW specialises in brake pads, brake discs, steering components, suspension parts, and engine valves. As an OE supplier to virtually all major global car manufacturers, TRW products meet the highest safety and performance standards. Trusted by vehicle makers for over a century, TRW delivers braking and steering components that prioritise safety without compromise.
Suitable cars
Vehicle matches are curated from manufacturer data
Confirmed fits based on manufacturer data.Equivalent products (1)
power brake booster TRW PSA908 — compatible car models
| Manufacturer article number (MPN) | PSA908 |
|---|---|
| OE part numbers | 1 165 541, 34 33 1 165 541 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TRW psa908 power brake booster. Manufacturer Restriction: TRW
- 1x power brake booster
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Tracked standard shipping.
- Standard delivery: 5–9 business days
- Order before 5pm — ships the next working day
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this power brake booster compatible with my car?
Use the vehicle selector at the top of the page to check compatibility. Enter your car's make, model, and engine — we'll confirm whether this power brake booster fits. All fitment data is verified through TecDoc.
What specifications does this TRW power brake booster have?
This TRW power brake booster has the following specifications: Manufacturer Restriction: TRW. Check the full specifications table above for complete details.
What OE part numbers does this power brake booster replace?
This power brake booster replaces OE part numbers: 1 165 541, 34 33 1 165 541. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a power brake booster cost?
This TRW power brake booster is available for £230.99. Power brake booster prices vary depending on brand, specifications, and vehicle compatibility. TRW parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my power brake booster?
Regular inspection of your power brake booster is recommended as part of routine vehicle maintenance. Watch for changes in performance, unusual noises, or visual signs of wear. Consult your vehicle's owner manual for manufacturer-recommended replacement intervals specific to your make and model.
What tools do I need to replace a power brake booster?
Tools required vary by vehicle make and model. Generally, a basic socket set, screwdrivers, and vehicle-specific tools may be needed. We recommend consulting a workshop manual for your specific vehicle, or having the power brake booster fitted by a professional mechanic.
Can I use this part as a replacement for OE 1 165 541?
Yes, this TRW power brake booster is a direct replacement for OE part number 1 165 541. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Is the TRW PSA908 the same as the TRW PSA116?
No, while both are power brake booster parts, they are different products. The TRW PSA908 has Manufacturer Restriction: TRW. The TRW PSA116 may differ in dimensions, fitting position, or material composition. Always verify compatibility with your specific vehicle using our vehicle selector, or contact our customer service team for assistance.
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