Sourced from ELRING, this seal, cylinder head (507.840) combines precision engineering with durable materials to meet the demands of everyday driving and extended service intervals. Technical specifications — Fitting Position: Right, Thickness [mm]: Steel mm, Diameter [mm]: 95, Copper mm, Gasket Design: 0, Goods tariff number: 8484100000 — are verified against the OEM data sheet to guarantee fitment accuracy and performance parity with the original equipment. Verified to fit BUICK, BUICK (SGM), CADILLAC, CADILLAC (SGM) and 8 other makes 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: 10214000, 12634479, 26377 PT, 54661 and 1 more. Matching these numbers confirms a like-for-like replacement with no loss of function. ELRING 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 with tracked delivery and a 14-day money-back guarantee with hassle-free returns.

Elring, founded in 1879 in Dettingen an der Erms, Germany, is a globally recognised specialist in engine sealing technology and gasket manufacturing. Elring specialises in cylinder head gaskets, valve cover gaskets, oil pan gaskets, exhaust manifold gaskets, and complete gasket sets. As an OE supplier to Mercedes-Benz, BMW, Volkswagen, and Audi, Elring gaskets deliver factory-precision sealing. With 140+ years of sealing innovation and state-of-the-art manufacturing, Elring is the professional's choice for leak-free engine assembly and repair.