Product Description
Genuine GM Rear Main Engine Seal – GM Part #12665076
Fits 2014–Newer Gen V LT-Based GM V8 Engines | 5.3L, 6.2L & 6.6L
The Genuine GM 12665076 Rear Main Engine Seal is the correct OEM replacement for sealing the crankshaft at the rear of 2014-newer Gen V LT-based GM V8 engines. Designed and manufactured to strict GM OE specifications, this rear main seal ensures proper oil control, prevents leaks, and maintains factory-level reliability. Ideal for engine rebuilds, transmission removal service, or oil leak repairs, this seal delivers the same performance, durability, and service life as the original factory-installed component.
Key Features & Benefits
- OEM GM Rear Main Seal: Engineered specifically for Gen V LT engines to restore proper crankshaft sealing and oil control.
- Prevents Oil Leaks: Maintains a tight, reliable seal at the rear of the crankshaft to eliminate oil seepage and contamination.
- Manufactured to GM OE Specifications: Matches factory fit, materials, and sealing performance for long-term durability.
- Ideal for Engine Service & Rebuilds: Recommended replacement whenever the transmission or flexplate is removed.
- Built for Harsh Operating Conditions: Designed to withstand high temperatures, crankshaft rotation speeds, and extended service intervals.
Key Fitments (Gasoline 5.3L, 6.2L & 6.6L Engines Only)
- Cadillac CTS-V: 2016–2019
- Cadillac Escalade: 2015–2024
- Chevrolet Camaro: 2016–2024
- Chevrolet Corvette: 2014–2019
- Chevrolet Express 2500: 2020–2024
- Chevrolet Express 3500: 2020–2024
- Chevrolet Express 4500: 2021–2024
- Chevrolet LCF: 2020–2024
- Chevrolet Silverado 1500: 2014–2024
- Chevrolet Silverado 2500: 2020–2024
- Chevrolet Silverado 3500: 2020–2024
- Chevrolet Suburban: 2015–2024
- Chevrolet Tahoe: 2015–2024
- GMC Savana 2500: 2018–2024
- GMC Savana 3500: 2018–2024
- GMC Savana 4500: 2021–2024
- GMC Sierra 1500: 2014–2024
- GMC Sierra 2500: 2020–2024
- GMC Sierra 3500: 2020–2024
- GMC Yukon: 2015–2024
- GMC Yukon XL: 2015–2024
