Cometic Gasket · New
Cometic Chevy Mark-IV Big Block V8 Top End Gasket Kit-4.350in Bore-.040in MLS Cylinder Head Gasket
MPN PRO1005T-4350-040 · Store SKU cgsPRO1005T-4350-040
Supplier stock checked 11/7/2026, 9:45:42 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. StreetPro gasket kits are sold as a top-end kits and bottom-end kits. Purchase both top- and bottom-end kits for a total engine rebuild. Quality gasket materials are a priority in StreetPro kits. Kit materials include: MLS, AFM, Aramid Fiber, and Armor Clad. MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel Chevrolet Mark-IV Big Block V8 Top End Gasket Kit; 4.350in. Bore; .040in. MLS Cylinder Head Gasket Chevrolet Mark-IV Big Block V8 Top End Gasket Kit, 4.350" Bore, .040" MLS Cylinder Head Gasket Chevrolet Mark-IV Big Block V8 Top End Gasket Kit
Manufacturer fitment & guides
- GM Big Block V8 1970-1985 402/392
- Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.
Part-specific notes
- California Proposition 65: Y
