Product Description
Genuine GM 12729655 Coated Main Bearing Set
Fits 2014+ GM Gen V LT 5.3L, 6.2L & 6.6L Engines | LT1, LT4, L83, L84, L86, L87, L82, L8B, L8T
The Genuine GM 12729655 Coated Main Bearing Set is the correct OEM-quality replacement for 2014 and newer Gen V LT-based V8 engines. These factory-engineered main bearings feature a polymer coating that provides added protection during cold starts and is required for vehicles equipped with start/stop technology. Designed, tested, and validated by General Motors, this bearing set delivers factory-correct clearances, durability, and long-term reliability, making it the ideal choice for stock rebuilds and OEM-style engine refreshes.
Key Features & Benefits
- Genuine GM OEM Main Bearings: Designed and validated by General Motors to meet strict factory specifications for fitment, oil clearance, and load capacity.
- Polymer Coated for Added Protection: Coating helps reduce wear during cold starts and provides extra protection under high-load and stop/start operating conditions.
- Required for Start/Stop Applications: Mandatory for vehicles equipped with factory start/stop systems to maintain bearing longevity and engine reliability.
- Ideal for Stock Rebuilds: Perfect OEM replacement when refreshing or rebuilding Gen V LT engines without altering factory specifications.
- Broad Gen V LT Compatibility: Fits 5.3L, 6.2L, and 6.6L Gen V LT-based gasoline V8 engines across trucks, SUVs, and performance vehicles.
Key Fitments (Gasoline V8 Models Only)
- Cadillac CT5: 2022–2024
- Cadillac CTS: 2016–2019
- Cadillac Escalade: 2015–2024
- Chevrolet Camaro: 2016–2024
- Chevrolet Corvette: 2014–2024
- Chevrolet Express 2500: 2021–2024
- Chevrolet Express 3500: 2021–2024
- Chevrolet Express 4500: 2021–2024
- 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: 2021–2024
- GMC Savana 3500: 2021–2024
- GMC Savana 4500: 2021–2023
- GMC Sierra 1500: 2014–2024
- GMC Sierra 2500: 2020–2024
- GMC Sierra 3500: 2020–2024
- GMC Yukon: 2015–2024
- GMC Yukon XL: 2015–2024
