Cometic Gasket · New
Cometic Street Pro GM Gen-6 L21/29 454 Big Block 4.375in Bore .040in Top End Gasket Kit
MPN PRO1046T · Store SKU cgsPRO1046T
Supplier stock checked 11/7/2026, 5:03:39 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 StreetPro Kits cater to the budget-minded street-rodder who is looking to purchase a kit with all necessary gaskets and seals needed for their rebuild. Quality gasket materials are a priority in StreetPro kits. Kit materials include: MLS, AFM, Aramid Fiber, and Armor Clad. Cometic Street Pro Kits are geared toward the street rider who is looking to purchase a kit with all necessary gaskets and seals needed for your rebuild. GM Gen-6 L21/29 454 Big Block V8 .040in. MLS Top End Gasket Kit; 4.375in. Bore GM Gen-6 L21/29 454 Big Block V8 .040" MLS Top End Gasket Kit, 4.375" Bore GM Gen-6 L21/29/502 Big Block V8 Top End Gasket Kit
Manufacturer fitment & guides
Check PRO1046T against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y