Reseal your leaking M157 or M278 valve covers the right way with genuine liquid sealant, new aluminum hardware, and high pressure fuel pump seals.
Reseal your leaking M157 or M278 valve covers the right way with genuine liquid sealant, new aluminum hardware, and high pressure fuel pump seals.
Includes Genuine Mercedes-Benz Sealant, all new hardware, camshaft adjuster seals for a perfect reseal.
This product was last offered at the strikethrough price on
04-14-2026
M157 / M278 Head Bolt - One Time Use. A full set to secure your cylinder head.
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M157 / M278 Head Bolt - One Time Use - Twenty (20) Required Per Engine
2X Entries For Our 25th Anniversary Sweepstakes!
For repair or changing valve in the cylinder head
2X Entries For Our 25th Anniversary Sweepstakes!
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Two (2) to Four (4) Required Per Vehicle based on engine. Includes new seal.
10X Entries For Our 25th Anniversary Sweepstakes!
This product was last offered at the strikethrough price on
05-29-2026