Product Description
Michigan Motorsports Gen V LT Exhaust Manifold / Header Gaskets (Pair) – Replaces 12657093
Fits 2014+ LT1, LT4, L82, L83, L84, L86, L87, L8T – 5.3L, 6.2L & 6.6L Engines
Michigan Motorsports’ Multi-Layer Steel (MLS) Exhaust Manifold Gaskets deliver superior sealing performance for today’s Gen V LT engines. Designed as OEM-quality replacements for GM #12657093, these gaskets provide a perfect fit, excellent durability, and long-term reliability in both stock and high-performance applications. Whether running factory manifolds or aftermarket headers, this gasket pair is engineered to handle extreme heat, high exhaust pressure, and the demanding conditions of modern LT platforms.
Key Features
- OEM-Quality Replacement: Direct-fit substitute for GM part number 12657093, offering precise alignment and factory-level reliability for all Gen V LT engines.
- MLS High-Strength Construction: Multi-layer steel design withstands extreme exhaust temperatures and pressure, ensuring a durable and leak-free seal for long-term use.
- Superior Sealing Performance: Ideal for both factory exhaust manifolds and aftermarket long-tube or shorty headers, supporting stock and boosted applications alike.
- Complete Pair Included: Comes as a set of two gaskets to service both driver and passenger sides of the engine’s exhaust interface.
- Direct-Fit Installation: Designed to meet OEM port shapes and bolt patterns, ensuring quick installation and dependable factory-style sealing.
Key Fitments
- Engines: LT1, LT4, L82, L83, L84, L86, L87, L8T – 5.3L, 6.2L, and 6.6L Gen V LT Series Engines (2014+)
- Platforms: Cadillac CT5 (2022–2026), CTS (2016–2019), Escalade (2015–2025); Chevrolet Camaro (2016–2024), Corvette (2014–2019), Express 2500/3500/4500 (2021–2025), LCF (2020–2026), Silverado 1500 (2014–2025), Silverado 2500/3500 (2020–2025), Suburban (2015–2025), Tahoe (2015–2025); GMC Savana 2500/3500/4500 (2021–2025), Sierra 1500 (2014–2025), Sierra 2500/3500 (2020–2025), Yukon (2015–2025)
- Notes: Designed for gasoline V8 Gen V LT engines only; replaces GM #12657093 and supports both factory manifolds and aftermarket header upgrades.
