Michigan Motorsports LS1/LS6 MLS Head Gasket & Head Bolt Kit | Like GM #12589226 | Fits 1997-2003 4.8L 5.3L 5.7L LS Engines | Early-Style Head Bolts | OEM Replacement for Cathedral Port Heads
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Features
- OEM-Matched MLS Gaskets for Precision Sealing – Multi-layer steel construction delivers superior combustion sealing and coolant/oil passage alignment, matching GM 12589226 factory specs for exact fit and lasting performance.
- Full Early-Style Head Bolt Set Included – Complete hardware for both heads (8 long, 2 short per side), ensuring correct torque and clamping force for 1997–2003 LS1/LS6 engines.
- Wide Compatibility Across LS Applications – Fits cathedral-port Gen III engines including LS1, LS6, LQ4, LM7, and others in 4.8L, 5.3L, and 5.7L displacements.
- Ideal for Stock Rebuilds or Performance Builds – Perfect for OEM-style repairs, high-performance upgrades, or preventative maintenance to avoid future head gasket failures.
- Direct Replacement, Hassle-Free Install – No modifications needed; components match OEM dimensions for easy installation and reliable, factory-quality results.
Description
The Michigan Motorsports LS1/LS6 MLS Head Gasket & Bolt Kit (1997–2003) delivers OEM-quality sealing and secure head bolt clamping for your Gen III LS engine rebuild or performance refresh. Featuring two Multi-Layer Steel (MLS) head gaskets built to GM #12589226 specs (3.920″ bore, .051″ thickness) and a full set of early-style head bolts (8 long & 2 short per side), this kit is engineered for cathedral-port LS engines found in 4.8L, 5.3L, and 5.7L applications. Whether you’re performing routine maintenance, repairing a blown gasket, or building a high-performance street or race engine, this kit provides factory fit, lasting durability, and leak-free performance you can trust.
Brand Name: Michigan Motorsports
Manufacturer: Michigan Motorsports
Model: G8100-2+K5100-02
Part Number: G8100-2+K5100-02
Best Sellers Rank: #1,424,228 in Automotive (See Top 100 in Automotive) #2,012 in Automotive Replacement Head Gasket Sets
ASIN: B0874WXL9P
Customer Reviews: 5.0 5.0 out of 5 stars (6) 5.0 out of 5 stars
Frequently asked questions
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