Michigan Motorsports Coated Main Bearing Set | Like GM #12729655 | Fits Gen V LT Engines 5.3L 6.2L 6.6L LT1 L83 L84 L86 L87 LT4 L8T | OEM Bearing Upgrade

This General Motors coated main bearing set 12729655 is a genuine OEM solution engineered for Gen V LT-series engines requiring factory-correct fitment with enhanced durability. Designed for 2014 and newer GM LT platforms, these bearings feature a factory-applied coating that improves wear resistance, reduces friction, and adds protection during cold starts and high-load operation. Ideal for stock rebuilds, engine refreshes, and performance-minded repairs, these bearings maintain proper oil clearances while providing added insurance against bearing fatigue. Built to GM specifications, they ensure reliable bottom-end performance for daily-driven, work, and performance LT engine applications.

• Genuine OEM GM Main Bearings: Manufactured to original equipment specifications to ensure precise fitment, correct oil clearances, and long-term reliability in Gen V LT engines.
• Factory Coated Bearing Surface: Coated design reduces friction and wear while providing added protection during cold starts and momentary oil pressure loss.
• Gen V LT Engine Compatibility: Designed specifically for modern GM LT platforms including LT1 L83 L84 L86 L87 LT4 and L8T engines.
• OEM Performance and Durability: Maintains factory engine characteristics while offering enhanced protection compared to uncoated standard bearings.
• Ideal for Rebuilds and Repairs: Perfect for engine rebuilds refreshes and bottom-end service where OEM quality and reliability are required.