Product Description
Michigan Motorsports LS9 Head Gaskets and 1997-2003 Bolt Kit
The Michigan Motorsports 1997–2003 LS9 Head Gaskets and Bolt Kit is the perfect solution for rebuilding or upgrading early LS-based engines. Featuring LS9 7-layer MLS head gaskets and the correct early-style head bolts, this kit provides the durability and reliability needed for high-performance naturally aspirated, turbocharged, and supercharged builds. Designed to withstand extreme cylinder pressures, these gaskets are the go-to choice for LS enthusiasts pushing serious horsepower.
Kit Includes
- LS9 Head Gaskets (best choice for most LS builds)
- 2 Sets of early-style head bolts (8 long and 2 short bolts per head)
Fitment & Bolt Style Information
Prior to 2004, Gen 3/Gen 4 GM small-block LS engines used mixed-length head bolts (long and short). In early 2004, GM switched to the later style, which uses all shorter bolts. This kit provides the correct early-style bolts for 1997–2003 engines.
Be sure to confirm your engine’s design before ordering:
- 1997–2003 Engines: Use this kit with 8 long bolts and 2 short bolts per head.
- 2004+ Engines: Require the later-style bolts (all short) – not included in this kit.
LS9 MLS Head Gasket Details
- 4.100" bore, .055" compressed thickness, 7-layer construction.
- Proven to handle 1000+ horsepower with ARP fasteners.
- Common choice for turbocharged and supercharged LS applications.
- Compatible with 5.3L, 5.7L, 6.0L, and 6.2L LS blocks.
Why Choose Michigan Motorsports
- Complete kit tailored for 1997–2003 LS engines.
- High-performance LS9 head gaskets for maximum durability.
- Correct early-style torque-to-yield bolts included for hassle-free installation.
Brought to you by Michigan Motorsports – delivering premium LS engine components for builders, racers, and enthusiasts.
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1997-2003 LS9 HEAD GASKET AND HEAD BOLT KIT
Great pricing and quality to get this kit. Easy install and bolts torqued down perfectly
