Product Description

Michigan Motorsports LS Countersunk Camshaft Thrust Retainer Plate Seal | LS & LT Engines

Upgrade your LS or LT build with the Michigan Motorsports Countersunk Camshaft Thrust Retainer Plate Seal, designed to maintain proper oil pressure and reliability across Gen III, IV, and V GM V8 platforms. Factory plates often fail over time as the orange seal hardens, flattens, and leaks oil pressure from the lifter galleys—especially after a cam swap. Our high-strength plate features a premium silicone seal that ensures oil pressure stays consistent, keeping lifters properly supplied for maximum performance and long-term engine protection.

Key Features:

Michigan Motorsports Quality: Engineered in-house for LS and LT engine builds, delivering strength and reliability over OEM plates.
Direct Replacement: Replaces GM part #12589016 and installs with no modifications.
High-Strength Plate & Seal: Includes upgraded silicone seal for superior oil retention and leak prevention.
Countersunk Hardware Included: Comes with 4-piece Torx countersunk bolt kit for a secure fit.
Torque Spec Ready: Designed to be installed at 11 ft-lbs using supplied hardware.
Wide Compatibility: Fits LS & LT series engines (2005–2020), and earlier LS engines when upgraded with countersunk bolts.

Compatibility:

Fits GM Gen III, IV, and V LS/LT engines: 4.8L, 5.3L, 6.0L, 6.2L, including LQ4, LQ9, LS2, LS3, LM7, L83, L86, LT1, L96, L99, L92, and more. Applications include (gasoline V8 models only):

Chevrolet: Silverado, Suburban, Tahoe, Avalanche, Camaro, Corvette, Impala, Monte Carlo, SSR, Caprice, Express, Trailblazer, Colorado, SS
GMC: Sierra, Yukon, Yukon XL, Savana, Envoy, Canyon
Cadillac: CTS, Escalade
Buick: Rainier
Pontiac: GTO, G8
Hummer: H2, H3, H3T
Saab: 9-7X

Fitment Years: 1999–2020 depending on model and engine option.

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5
Cam plate

Posted by Stuart murray on Jul 6th 2025

Thank you guys perfect fit. Thanks Michigan Motorsports!
5
Camshaft retainer

Posted by Mike on May 9th 2025

Works perfectly
5
Good quality

Posted by James on Jun 9th 2024

Good items
5
Thrust plate

Posted by Unknown on Mar 28th 2024

Everything I needed for replacing the thrust plate. Great quality and fitment
5
COUNTERSUNK CAMSHAFT RETAINER THRUST PLATE

Posted by MikeD on Jan 29th 2024

Nice quality plate and seal + bolts being counter sunk was preferred.
5
Great part and like i’ve reviewed its needed insurance for playing with oil pressure

Posted by Andy Breti on Mar 3rd 2023

Thanks for working with me on my order!
5
Cam thrust plate

Posted by Cam Knapp on Feb 23rd 2023

Very good, seemed exactly like oem and having Allen heads vs torx is a plus!
5
No leaks

Posted by Richard Baughman on Oct 4th 2021

Worked perfect

LS/LT Countersunk Camshaft Retainer Thrust Plate Seal Includes Bolts 4.8 5.3L 6.0L 6.2L LS1 LQ4 LS2 LS3 LS2 L83 L86 LT1 Cam Gasket Replaces 12589016