Out of stock
SKU: REM12-002
UPC: 878891001662
MPN: 12-002
The Exhaust Gasket for Pontiac 400-455 Ram-Air IV/SD/HO (MPN 12-002) is an essential component for engine builders and restoration enthusiasts working with classic Pontiac muscle cars. This gasket seals the junction between the exhaust manifold and cylinder head, preventing exhaust gases from leaking and ensuring optimal engine performance. Anyone rebuilding or restoring a Pontiac 400 or 455 big-block, especially the Ram-Air IV, Super Duty, or High-Output variants, needs a reliable, OE-quality gasket.
REMFLEX exhaust gaskets are engineered with advanced composite materials that can withstand extreme manifold temperatures and pressure cycles without degradation or blow-out. Unlike brittle cast iron or thin metal gaskets that can fail under thermal stress, REMFLEX's flexible construction allows it to conform precisely to manifold and head surfaces, creating an airtight seal even when bolt torque fluctuates. This design minimizes exhaust leaks that can lead to power loss, increased emissions, and overheating of the manifold and adjacent engine components.
Street and strip builders favor REMFLEX gaskets for high-performance Pontiac engines because they resist failure across multiple heat cycles. The gasket's dimensions of 5.1 x 0.45 x 26.1 inches ensure proper port alignment, eliminating the need for custom modifications or expensive machine work. This makes it an ideal choice for anyone looking to maintain peak performance in their Pontiac 400-455 engine.
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