Check the listing for details. BTR Brian Tooley Racing LS9 Head Gaskets Set 4.100 bore MLS 4.8 5.3 5.7 6.0. Condition: New. Listed at 107.99 USD. **IN STOCK - SHIPS IMMEDIATELY** BTR Brian Tooley Racing LS9 Head Gasket Set (2) BTR LS9 MLS Head Gasket Set (pair of 2) The BTR LS9 head gasket can't be beat for performance and value. These head gaskets have been proven to be reliable north of 1,000 horsepower. These gaskets feature a 4.100" bore and a .055" thickness spread across 7 layers of steel. These can be used in place of GM part #12622033.Great for Turbo, Supercharged, Nitrous and normally aspirated applications. Fits: 4.8, 5.3, 5.7, 6.0 and 6.2 blocks. 4.100" bore.055" compressed thickness7 Layer MLS Sold by Dynosty - Authorized Brian Tooley Racing Dealer We can be contacted at any time through eBay messages or by reaching out directly to DYNOSTY Payment Immediate payment required Shipping Items ship from DYNOSTY in Louisville, KY**IN STOCK - SHIPS IMMEDIATELY** BTR Brian Tooley Racing LS9 Head Gasket Set (2) BTR LS9 MLS Head Gasket Set (pair of 2) The BTR LS9 head gasket can't be beat for performance and value. These head gaskets have been proven to be reliable north of 1,000 horsepower. These gaskets feature a 4.100" bore and a .055" thickness spread across 7 layers of steel. These can be used in place of GM part #12622033.Great for Turbo, Supercharged, Nitrous and normally aspirated applications. Fits: 4.8, 5.3, 5.7, 6.0 and 6.2 blocks. 4.100" bore.055" compressed thickness7 Layer MLS Sold by Dynosty - Authorized Brian Tooley Racing Dealer We can be contacted at any time through eBay messages or by reaching out directly to DYNOSTY Payment Immediate payment required Shipping Items ship from DYNOSTY in Louisville, KY