Enginetech P389-1 Full Gasket Set OEM-Spec for 1961-1967 Pontiac 326ci-421ci V8 - Complete Engine Sealing Kit

Enginetech P389-1 is a full engine gasket set for 1961-1967 Pontiac models with 5.3L 326ci, 6.4L 389ci, and 6.9L 421ci V8 OHV engines.

Fitment: Fits 1961-1967 Pontiac Catalina, Bonneville, Grand Prix, LeMans, Tempest, Firebird, and Star Chief with the listed V8 displacements.

Enginetech full gasket sets are engineered to meet or exceed OEM specifications and backed by over 40 years of engine rebuilding expertise - giving professional rebuilders and serious DIYers confidence that every seal, gasket, and component in the kit will perform correctly from initial startup through long-term operation. Each set is application-specific, designed around the exact engine family it serves, with premium materials selected to handle the thermal cycling, pressure, and chemical exposure demands of that particular application. Select sets feature Multi-Layer Steel (MLS) head gaskets for superior sealing on modern engines where precision surface finish and clamping load are critical - a meaningful upgrade over standard composition gaskets in high-stress applications. Enginetech kits are clearly documented with application-specific notes covering included and excluded components, so you know exactly what you're getting before the engine is on the stand. As with any gasket set installation, always use new head bolts where specified - reusing stretch-to-yield fasteners compromises clamp load and risks head gasket failure regardless of gasket quality.