This rear main seal is engineered for Mopar Gen III Hemi engines to seal the crankshaft’s rear snout where it exits the block — preventing oil leaks into the bellhousing or under the engine. The seal is a direct-fit replacement for the factory rear main seal and is intended for use whenever the rear main seal housing is serviced, replaced, or during full engine rebuilds. Using a fresh seal ensures long-term oil-containment and crankcase integrity.

BTR21335AE Features:

• Fitment: Mopar Gen III Hemi engines
• Seals crankshaft rear snout to prevent oil leakage past the rear main bearing
• Durable construction suitable for normal use or high-performance applications
• Direct-fit replacement — no modification required to install
• Sold individually — one seal per engine rear-main application

BTR21335AE Notes:

• Sold individually — order one seal per engine rebuild or rear main reseal job
• Recommended replacement whenever the rear main seal housing is removed or engine is disassembled to maintain a leak-free rear crank seal