The SKF Belt Tensioner V Ribbed Belt (VKM 38231) 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: Diameter [mm]: 70 mm, Width [mm]: 26 mm, Tensioner Pulley Actuation: Exterior, Alternative Repair Kit: VKM 38202-1. Each dimension is checked against the OEM reference to ensure the component seats and functions correctly first time. Verified to fit BMW 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: 03-40101-SX, 03.612, 05078, 08.19.115 and 30 more. Matching these numbers confirms a like-for-like replacement with no loss of function. SKF is a recognised supplier of automotive engine timing 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.

SKF, founded in 1907 in Gothenburg, Sweden, is the world's leading bearing manufacturer with over a century of precision engineering expertise. SKF specialises in wheel bearings, hub units, tensioner pulleys, water pump bearings, and drivetrain bearings for all vehicle types. As an OE supplier to virtually every major automotive manufacturer, SKF products are built with exceptional precision and durability. Trusted globally for rotating equipment solutions, SKF bearings deliver smooth, quiet operation and extended service life in the most demanding conditions.