Cure the notorious M157, M278, and M276 oil leak, save your alternator, and do the job right with 100% Genuine Mercedes Benz hardware and sealant in one click.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Reseal your leaking M157 or M278 valve covers the right way with genuine liquid sealant, new aluminum hardware, and high pressure fuel pump seals.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Cure the notorious M157, M278, and M276 oil leak, save your alternator, and do the job right with 100% Genuine Mercedes Benz hardware, sealant, and four new camshaft magnets in one click.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Includes Genuine Mercedes-Benz Sealant, all new hardware, camshaft adjuster seals for a perfect reseal.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
5456410
Mfg#:
M157M278RSKT
Ships in 3 Business Days
$800.99
This product was last offered at the strikethrough price on 04-14-2026
$771.99 USD
Free Shipping
Partial Replacement
More About Valve Cover Parts
Oil dripping down your engine isn't a good look and topping off every few hundred miles isn't fun, either. Replace a leaky valve cover with a brand new OEM or aftermarket valve cover and valve cover gasket to seal up that leak once and for all.