Fel-Pro BS404491 is a rear main seal gasket for stock engine repair on verified Chevy, Pontiac, Honda, and Isuzu applications using 1.8L diesel and 2.0L, 2.3L, or 2.6L L4 engines. It helps control oil leakage at the crankshaft during bottom-end service or rebuild work, using an application-specific, one-piece rubber design built to seal even when the mating surface is not perfectly smooth.

Fel-Pro BS404491 Features:

• One-piece rubber rear main seal design supports an OE-style repair for street-driven cars and trucks, not race applications.
• Application-specific construction is validated for fit, form, and function, helping the seal sit correctly in the rear crankshaft sealing location.
• Designed for engine repair work where preventing oil leaks at the crankshaft is critical during bottom-end service or rebuild assembly.
• Product dimensions are 12 in. x 6 in. x .4 in., with an item weight of 2.82 oz.
• Meets or exceeds OE specifications for the listed replacement applications.

Includes:

• One rear main seal, sold individually

Best suited for stock rebuilds and routine engine reseal work where an OEM-style rear crankshaft seal is needed.

Verified fitment includes Chevy Chevette and Pontiac Acadian 1.8L diesel models from 1981-1986, Isuzu I-Mark 1.8L diesel from 1981-1984, Isuzu Impulse 2.0L and 2.3L from 1985-1989, Isuzu Amigo 2.3L and 2.6L from 1989-1994, Honda Passport 2.6L from 1994-1996, and Isuzu Rodeo 2.6L from 1991-1997. Isuzu P'up, Pickup, Trooper, and Trooper II applications were not part of the verified fitment set provided here, so confirm separately before ordering for those vehicles.