Patriot Exhaust Seal-4-Good Header Manifold Gasket Set 66031 for GM LT-Series D-Port Engines

The Patriot Exhaust Seal-4-Good Header and Manifold Gasket Set, Part Number 66031, provides a reliable sealing solution for compatible GM LT-Series engines from 1992 through 1997. Designed for D-port exhaust applications, this paired gasket set helps create a secure connection between the cylinder heads and exhaust headers or manifolds, supporting proper exhaust system performance and reducing the risk of leaks.
Constructed from multi-layered aluminum, these gaskets are engineered to withstand the heat and pressure associated with high-temperature exhaust applications. The Seal-4-Good design promotes dependable sealing across the mating surfaces while accommodating the demands of performance-oriented exhaust systems. The 1.450-inch by 1.375-inch D-port opening is suited to the specified GM LT-Series configuration and should be matched to the vehicle and header application before installation.
This Patriot Exhaust gasket set is supplied as a pair, making it a practical replacement for servicing both sides of the engine. Replacing worn, damaged, or compressed header gaskets can help maintain exhaust system integrity and support consistent engine operation. For best results, clean and inspect all mating surfaces, verify header alignment, and follow the manufacturer's recommended installation procedures. Part Number 66031 is intended for compatible 1992-1997 GM LT-Series D-port applications.

Features:

• Brand: Patriot Exhaust

• Part Number: 66031

• Application: Compatible with GM LT-Series engines from 1992 through 1997

• Design: D-port exhaust header and manifold gasket

• Material: Multi-layered aluminum construction

• Set: Includes a pair of gaskets

• Port Opening: 1.450 inches by 1.375 inches

• Use: Replacement sealing components for compatible header or manifold installations