Cometic Gasket · New
Cometic GM Gen 5/6 Big Block V8 Rear Main Seal Kit - 1 Piece
MPN C5087 · Store SKU cgsC5087
Supplier stock checked 11/7/2026, 9:17:37 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Cometic utlizes their in-house dynamometersand engine assembly rooms to ensure quality and reliability GM Gen-V/VI Big Block V8 Rear Main Seal Kit; 1 Piece GM Gen-V/VI Big Block V8 Rear Main Seal Kit, 1 Piece GM Gen-V/VI Big Block V8 Rear Main Seal Kit Rear Main Seal
Manufacturer fitment & guides
- GM 1990+Gen 5/6 Big Block
- Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.
Part-specific notes
- California Proposition 65: Y