Product Description
Michigan Motorsports 1997–2003 LS1 Head Gaskets and Bolt Kit
Includes (2) MLS Head Gaskets and Early-Style Head Bolts
The Michigan Motorsports 1997–2003 LS1 Head Gasket and Bolt Kit provides everything you need for a top-end rebuild or cylinder head replacement on early Gen 3/4 LS engines. Featuring premium MLS gaskets and OEM-style head bolts, this kit delivers the reliability and sealing performance you expect for both stock and high-performance builds.
Kit Includes
- (2) LS1 MLS head gaskets – GM #12498544 – fits most 4.8L, 5.3L, and 5.7L LS builds
- (2) complete sets of early-style head bolts – 8 long and 2 short bolts per cylinder head
Fitment Notes
- Designed for 1997–2003 GM LS-based engines using early-style head bolts
- In early 2004, GM changed to a uniform short-length head bolt design—verify your application before ordering
Head Gasket Details
- Direct replacement for LS1/LS6 GM head gasket #12589226
- MLS (Multi-Layer Steel) construction for superior sealing and durability
- Produced by the same source as OEM GM gaskets
- Bore size: 3.920"
- Thickness: .051"
Product Videos
Custom Field
Product Reviews
1 Review Hide Reviews Show Reviews
-
Head Gaskets and Bolts
Michigan Motorsports was wonderful to work with!
