The BTR LS1 head gasket is a multi-layered steel (MLS) gasket engineered to seal the cylinder head to the block on GM 4.8, 5.3, and 5.7 liter (LS1/LS6) engines. It is a direct replacement for the factory LS1/LS6 head gasket, sourced from the same supplier as the OEM units. Sold individually, it is built to the bore and thickness specs required for a reliable, consistent seal.
- Part Number: BTR89226
- Application: GM LS-Series (4.8/5.3/LS1), direct replacement for LS1/LS6
- Material: Multi-Layered Steel (MLS)
- Sold As: Each (single gasket)
- Bore: 3.910 in
- Compressed Thickness: 0.051 in
- Fitment Note: Will not work with early-style notched LS1 cylinder heads
FAQ
What engine platforms is this head gasket for?
This gasket fits GM 4.8, 5.3, and 5.7-liter (LS1/LS6) engines and is sold as part number BTR89226.
Is this gasket sold individually or as a pair?
This listing is for a single gasket, sold individually rather than as a pair.
What is the bore size and compressed thickness?
The gasket has a 3.910 in bore and a compressed thickness of 0.051 in, using multi-layered steel (MLS) construction.
Will this gasket work with early-style notched LS1 cylinder heads?
No, this gasket will not work with early-style notched LS1 cylinder heads.

