Mercedes OEM Corteco Valve Stem Seal Kit for 2003 - 2018 Mercedes 5.5L & 6.0L V12 CL600, CL65 AMG, G65 AMG, S600, S65 AMG, SL600 and Sl65 AMG, 137 050 00 58
- Restore V12 performance and cut oil consumption with an OEM Corteco valve stem sealing kit for Mercedes-Benz.
- Corteco (the aftermarket arm of Freudenberg, an OE supplier to Mercedes) manufactures these seals to OE spec for a perfect fit and long service life.
- This kit is commonly used on M275/M285 V12 engines in S-/CL-/SL-Class models. Set of 18 seals (per cylinder head) — order two kits if you’re resealing both heads.
- Kit includes seals and plastic installation sleeves for 1 side cylinder head.
- These are NLA No Longer Available from Mercedes-Benz.
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Proper valve stem sealing keeps oil out of the combustion chamber for cleaner burn, reduced smoke on start-up, lower oil consumption, and stable idle.
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Direct fit for listed applications; matches OE part 137-050-00-58
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Heat/chemical-resistant materials for longevity.




