If you're working on an LS or LT engine build, this Michigan Motorsports camshaft retainer kit is exactly what you need to keep everything properly aligned and sealed. This complete kit includes the retainer plate, gasket-style seal, and those crucial countersunk bolts - everything required for a proper installation without having to reuse old, worn hardware. The countersunk bolt design is key here - it provides essential clearance for your camshaft and timing components, ensuring perfect alignment and preventing any interference issues that could mess up your build. The integrated seal creates a leak-free barrier at the camshaft bore, keeping your engine oil where it belongs and protecting your valvetrain from premature wear. This is a direct replacement for GM part number 12589016 and fits a huge range of Gen III, IV, and V LS and LT engines including LS1, LS2, LS3, LQ4, L83, L86, and LT1 models from 4.8L all the way up to 6.2L. Whether you're doing a cam swap, full engine rebuild, or just preventive maintenance, this retainer plate delivers the precision and reliability that serious engine builders trust. Michigan Motorsports has built their reputation on quality components that meet or exceed OEM specifications, so you can install this with confidence knowing it'll stand up to street driving or track use. No more worrying about camshaft walk or oil leaks - this kit has you covered for a secure, professional-grade installation that'll keep your engine running strong for miles to come.