BTR Brian Tooley Racing LS7 MLS Head Gasket - Direct GM Replacement 12582179 - Fits 7.0L Engines - 4.140" Bore, .051" Thickness - LS7 Cylinder Head Sealing Upgrade (2)

When you're building a serious LS7 engine, sealing is everything—and that's where Brian Tooley Racing steps in with the BTR-82179 MLS head gasket. This gasket is a direct fit for GM 12582179 and is purpose-built for 7.0L LS7 powerplants pushing serious performance. Featuring a 4.140" bore and .051" compressed thickness, it delivers rock-solid combustion sealing under intense heat and cylinder pressure. Whether you're dialing in a naturally aspirated beast or boosting your way into four-digit horsepower, this gasket won’t back down. It’s the same high-performance sealing tech trusted by top LS engine builders, all backed by BTR’s race-proven quality.

• Direct Fit Replacement: Precision-designed to replace GM 12582179 for LS7 engines, the BTR-82179 gasket drops in seamlessly and provides dependable OEM-level fitment with performance-grade sealing you can trust under high horsepower loads.
• Race-Proven MLS Design: Built from multi-layer steel for maximum strength, these gaskets resist blowouts, sealing combustion pressure reliably in nitrous, boosted, or naturally aspirated LS7 applications—ideal for street, strip, or track.
• Engineered for 7.0L LS7 Power: Featuring a 4.140" bore and .051" thickness, this gasket is made to match factory LS7 spec with performance-minded tolerances that support high-compression and aftermarket cylinder head builds.
• Durability Under Pressure: Built for high cylinder pressure environments, the BTR-82179 ensures leak-free sealing even under extreme RPM and thermal cycling, keeping your engine protected in demanding performance conditions.
• Sold Individually for Custom Builds: Buy one or a pair depending on your build. This single gasket gives you the flexibility to replace only what you need or pair two up for a full LS7 top-end refresh with confidence.