Fel-Pro BS40621 is a rear main seal gasket set for 1995-2003 GM 3.8L V6 applications, built to stop engine oil leaks at the rear of the crankshaft. It suits common service work on Buick, Chevy, Oldsmobile, and Pontiac platforms, giving mechanics and DIY installers an application-specific sealing solution for stock rebuilds and street-driven repairs.

Fel-Pro BS40621 Features:

• 1-piece rubber rear main seal design targets the crankshaft sealing point where oil leaks often appear at the back of the engine.
• Application-specific construction helps the seal conform to real repair conditions, including worn or less-than-perfect sealing surfaces.
• Validated for fit, form, and function, with engineering intended to meet or exceed original equipment specifications.
• Designed for stock rebuilds and street-driven cars, not for racing applications.

Includes:

• Rear main seal set for the engine crankshaft sealing location

Use this set when resealing the rear of the crankshaft during engine service, rebuild work, or repair of oil drips from the rear main seal area.

Fits select 3.8L V6 models including Buick LeSabre, Park Avenue, Regal, and Riviera; Chevy Camaro, Impala, Lumina, and Monte Carlo; Oldsmobile 88, 98, Intrigue, LSS, and Regency; Pontiac Bonneville, Firebird, and Grand Prix.