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Details
| Specification | Value |
|---|---|
| Brand | TRW Engine Component |
| MPN | rk-9h |
| Valve Stem Diameter [mm] | 9 mm |
OE/OEM numbers (3)
Search by this OE number to find compatible parts
- MERCEDES-BENZ—115 053 00 26
- MAN—51.04104-0028
- MERCEDES-BENZ—A 115 053 00 26
Where this part fits
Original-fit position for OE 1150530026. The red ring marks where this part installs on the vehicle.

About this product
The TRW Engine Component Valve Keeper (RK-9H) is a professional-grade replacement component engineered for long service life and reliable operation across all conditions your vehicle encounters. The part is built to the following specification: Notches/Holes Number: Steel, Machining: Steel, Valve Stem Diameter [mm]: Stainless Steel mm. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit ALFA ROMEO, MERCEDES-BENZ, PUCH models. All compatibility data is cross-checked against the TecDoc database — select your vehicle to confirm the part matches your specific engine and year. This part supersedes original equipment references: 115 053 00 26, 51.04104-0028, A 115 053 00 26. Matching these numbers confirms a like-for-like replacement with no loss of function. TRW Engine Component is a recognised supplier of automotive replacement 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 from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Suitable cars
No equivalent parts found.
Valve Keeper TRW Engine Component RK-9H — compatible car models
| Car models | ALFA ROMEO: GIULIA (105), GIULIA GT (105), GT (105), SPIDER (105); MERCEDES-BENZ: 123 Coupe (C123), 123 Saloon (W123), 123 T-Model (S123), /8 Coupe (W114), /8 (W114), /8 (W115), CABRIOLET (W111, W112), COUPE (W111, W112), G-CLASS Cabrio (W460), G-CLASS (W460) (+16 more) |
|---|---|
| Engines | 1300 Super (115); 1300 Super; 1300 Junior (105); 1300 (10591); 230 C (123.043); 200; 230 T (123.083); 250 C (114.021); 230.6 (114.015); 280 SE 3.5 (111.025); 250 SE (111.021); 230 G (460.210, 460.241); 230 G (460,2); 500 GE (463.228); 230 S (111.010) (+12 more) |
| Year of manufacture | 1959-2018 |
| Manufacturer article number (MPN) | RK-9H |
| OE part numbers | 115 053 00 26, 51.04104-0028, A 115 053 00 26 |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TRW Engine Component rk-9h . Machining: 1. Notches/Holes Number: 1. Valve Stem Diameter [mm]: 9 mm
- 1x Valve Keeper
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- 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 Valve Keeper compatible with my car?
This Valve Keeper fits ALFA ROMEO, MERCEDES-BENZ, PUCH vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this TRW Engine Component Valve Keeper have?
This TRW Engine Component Valve Keeper has the following specifications: Notches/Holes Number: 1; Machining: 1; Valve Stem Diameter [mm]: 9 mm. Check the full specifications table above for complete details.
What OE part numbers does this Valve Keeper replace?
This Valve Keeper replaces OE part numbers: 115 053 00 26, 51.04104-0028, A 115 053 00 26. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Valve Keeper cost?
This TRW Engine Component Valve Keeper is available for £4.99. Valve Keeper prices vary depending on brand, specifications, and vehicle compatibility. TRW Engine Component parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Valve Keeper?
Regular inspection of your Valve Keeper 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 Valve Keeper?
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 Valve Keeper fitted by a professional mechanic.
Can I use this part as a replacement for OE 115 053 00 26?
Yes, this TRW Engine Component Valve Keeper is a direct replacement for OE part number 115 053 00 26. 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 Engine Component RK-9H the same as the TRW Engine Component KK-8H?
No, while both are Valve Keeper parts, they are different products. The TRW Engine Component RK-9H has Notches/Holes Number: 1, Machining: 1, Valve Stem Diameter [mm]: 9 mm. The TRW Engine Component KK-8H 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.
