Product Description
Michigan Motorsports Gen V LT Main Cap Bolt Kit - 30-Piece Main Bearing Cap Fastener Set for LT1 LT4 L83 L86 L84 L87 L8T L82 L8B
Includes 10 Inner, 10 Outer and 10 Side Main Cap Bolts for 2014-Newer LT-Based V8 Engines
Complete your Gen V LT short-block repair or engine rebuild with the correct main bearing cap hardware already grouped into one package. This Michigan Motorsports main cap bolt kit includes 30 stock-replacement fasteners covering the inner, outer and side bolt positions on compatible 2014-newer LT-based V8 engines. It is a practical replacement for missing or damaged original hardware and eliminates the need to locate three separate sets of main cap bolts before lower-engine assembly can move forward.
Key Features & Benefits
- Complete 30-Piece Main Cap Bolt Kit: Contains 10 inner main cap bolts, 10 outer main cap bolts and 10 side cap bolts. All three fastener groups are supplied together, giving engine builders and repair shops one organized replacement set for compatible Gen V LT main bearing caps.
- Stock-Replacement Fastener Configuration: Designed for factory-style main cap applications, this kit replaces missing or damaged original hardware without changing to an aftermarket main stud system. It is well suited for stock repairs, short-block refreshes and complete Gen V LT engine rebuild projects.
- Inner, Outer and Side Bolts Included: The different main bearing cap fastener positions require three distinct bolt groups. Including each group in the correct quantity helps prevent incomplete hardware orders and keeps the required main cap bolts together throughout the engine-building process.
- Built for Gen V LT Engine Service: These main cap fasteners are intended for use when the lower engine assembly is being repaired or rebuilt. The complete set is especially useful when original bolts have been lost, mixed between projects or found damaged after disassembly.
- Broad LT-Based V8 Compatibility: Fits the listed 2014-newer Gen V engine families, including LT1, LT4, L83, L86, L84, L87, L8T, L82 and L8B. This coverage makes the kit a versatile replacement option across numerous Gen V performance, truck and SUV engine builds.
Key Fitments
- Fits 2014-newer LT Based V8 Engines LT1 LT4 L83 L86 L84 L87 L8T L82 L8B
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Product Reviews
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Excellent OEM Quality Main Cap Bolts
recently completed a full rebuild on the 6.2L L86 in my 2018 GMC Yukon XL Denali 4WD, and I used Michigan Motorsports for a large portion of the engine rebuild parts. The main goal of the rebuild was to address the factory DOD/AFM system and convert the engine to a mechanical DOD delete/non-AFM setup. I wanted to do it right while I had the engine completely apart rather than simply replacing the failed components and putting the factory system back in. Some of the Michigan Motorsports parts I used included: * King MB5293SI main bearings * Genuine GM 12735504 connecting rod bearings * Genuine GM 11548432 connecting rod bolts * Michigan Motorsports Gen V LT main cap bolt kit * 7.850” Gen V pushrods * Gen V camshaft bearings * Michigan Motorsports DOD/AFM delete components * Delphi LS7 non-DOD lifters * Non-AFM/DOD camshaft Michigan Motorsports specifically lists its L86 DOD delete kit for the 2014–2018 L86 and includes the components needed to convert the engine to conventional non-DOD lifters, with a non-DOD camshaft and ECM calibration required as part of the conversion. I was impressed with the overall quality and fitment of the parts. Everything went together well during the rebuild, and I didn’t run into any fitment issues with the Michigan Motorsports components. The GM rod bearings were also the correct later-style 12735504 bearings for my 2017+ L86 application. I took my time putting this engine together because I wanted to make sure everything was right — bearing clearances, fasteners, valvetrain, oiling system, and the DOD conversion. After getting everything assembled, priming the engine, and getting it fired up, the Yukon is running great. The engine has a smooth idle, the valvetrain is quiet, oil pressure looks good, and so far everything is operating exactly how I wanted it to. For me, doing the mechanical DOD delete made a lot of sense while rebuilding the engine. Instead of putting the factory AFM/DOD lifters and associated components back into an engine that was already completely apart, I was able to eliminate that system and convert the valvetrain to a conventional setup. Overall, I’m very happy with the Michigan Motorsports parts and the way this rebuild turned out. The parts fit, the engine went together properly, and most importantly, the Yukon is back on the road and running strong. I’d definitely use Michigan Motorsports again on another LS/LT rebuild and would recommend them to anyone doing an L86 rebuild or DOD delete.
