Cometic Gasket · New
Cometic GM L59/LM7/LR4 Small Block V8 Top End Gasket Kit-3.840in Bore-.045in MLS Cyl Head Gasket
MPN PRO1040T-045 · Store SKU cgsPRO1040T-045
Supplier stock checked 11/7/2026, 5:17:39 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. 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 GM L59/LM7/LR4 Small Block V8 Top End Gasket Kit; 3.840in. Bore; .045in. MLS Cylinder Head Gasket GM 4.8L/5.3L Gen-3 Small Block V8 Top End Gasket Kit, 3.840" Bore, .045" MLS Cylinder Head Gasket GM 4.8L/5.3L Gen-3 Small Block V8 Top End Gasket Kit GM Gen-3 Vortec V8 Top End Gasket Kit
Manufacturer fitment & guides
- GM LS 4.8L/5.3L Truck/Van 2001-2010
- Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.
Part-specific notes
- California Proposition 65: Y
