Michigan Motorsports Rear Main Seal | Like GM #12665076 | Fits Gen V LT Engines LT1 LT4 L83 L86 L84 L87 L8T L82 L8B | Crankshaft Oil Seal

This Michigan Motorsports rear main seal 12665076 is designed for Gen V LT-based engines to provide a reliable oil seal at the rear of the crankshaft. Proper rear main sealing is critical to prevent oil from spewing out between the engine and transmission, maintain crankcase integrity, and protect surrounding components. A worn or cracked rear main seal can cause oil loss and contamination of the bellhousing area. This direct replacement seal restores proper sealing performance and is ideal for engine rebuilds, transmission removal, or routine service. Manufactured to OEM-style specifications, it installs with correct fitment and delivers long-term durability for both daily-driven and performance LT engine applications.

• Rear Crankshaft Oil Seal: Designed to seal the rear of the crankshaft to prevent engine leaks at the engine-to-transmission interface.
• OEM-Style Replacement: Manufactured to factory-style specifications for precise fitment and dependable sealing performance.
• Prevents Oil Spewage: Helps eliminate rear main oil seepage that can lead to oil loss and drivability or maintenance issues.
• Direct Replacement Installation: Installs directly in place of the original rear main seal with no modifications required during service.
• Wide Gen V LT Compatibility: Designed for multiple Gen V LT engine platforms commonly used in cars trucks and performance applications.