Michigan Motorsports LS LT Countersunk Camshaft Retainer Thurst Plate w/Seal & Bolts | Fits 4.8L 5.3L 6.0L 6.2L LS1 LS2 LS3 LQ4 L83 L86 LT1 Engines | Replaces 12589016

The Michigan Motorsports LS LT Countersunk Camshaft Retainer Thrust Plate with Seal and Bolts is a direct-fit replacement designed to keep your valvetrain secure and properly sealed. Built to OE specifications with countersunk bolt design, this thrust plate ensures accurate camshaft alignment while preventing oil leaks at the front cam bore. It includes the retainer plate, gasket-style seal, and bolts for a complete installation solution. Compatible with Gen III, IV, and V LS and LT engines including LS1, LS2, LS3, LQ4, L83, L86, and LT1, this replacement thrust plate is perfect for cam swaps, rebuilds, and maintenance. Michigan Motorsports delivers the reliability and precision that performance builders trust.

• Complete Retainer Plate Kit – Includes a brand-new camshaft retainer plate, gasket-style seal, and countersunk bolts, giving you everything needed for a proper installation. No need to reuse old or worn hardware—this all-in-one kit saves time, ensures a secure fit, and guarantees reliable camshaft retention under high-performance conditions.
• Precision Countersunk Bolt Design – Engineered with countersunk bolt holes that provide critical clearance for camshaft and timing components, ensuring perfect alignment during installation. This OE-style design eliminates interference issues, improves durability, and delivers the reliability required for street or race LS/LT engine builds.
• Superior Sealing Protection – Features an integrated gasket-style seal to provide a leak-free barrier at the camshaft bore, keeping vital engine oil contained and protecting the valvetrain from premature wear. This design not only prevents messy leaks but also enhances engine longevity and performance consistency under load.
• Direct Replacement for GM #12589016 – Built to OEM specifications, this thrust plate directly replaces GM part number 12589016, making it a perfect choice for camshaft swaps, engine rebuilds, or preventive maintenance. Designed to meet or exceed factory quality, it provides peace of mind knowing your engine is secured with the right parts.
• Wide GM LS & LT Engine Fitment – Designed to fit a broad range of GM Gen III, IV, and V engines, including LS1, LS2, LS3, LQ4, L83, L86, and LT1 from 4.8L through 6.2L. Whether you’re working on a daily driver, performance street build, or track-ready race engine, this plate provides the durability and compatibility you need.