FAST · New
FAST Replacement Intake Port Seal LS3 - Set of 8
MPN 146003-8 · Store SKU fst146003-8
Supplier stock checked 11/7/2026, 10:14:21 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
These gaskets are designed to provide a seal between the LSXR 102mm intake manifold and an LS3 Rectangular Port design cylinder head. Eight intake port seal replacements for LS3/L76/L92/L99 manifolds. LSXR 102mm LS3 Intake Manifold Port to Cylinder Head Seal Set
Manufacturer fitment & guides
Check 146003-8 against the manufacturer’s application information below.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- California Proposition 65: Y