SCE Gaskets P643850 Pro Copper Cylinder Head Gasket Bore Thick Mopar B/RB - 4.380 0.050

The SCE Gaskets P643850 Pro Copper cylinder head gasket is engineered for high-performance Mopar B-Series and RB-Series big block engines. This premium gasket features a 4.380-inch bore diameter and 0.050-inch compression thickness, making it ideal for custom engine builds requiring precise deck height and compression ratio tuning.

Key Features:

• Solid copper construction for superior thermal conductivity and sealing
• 4.380-inch bore diameter accommodates oversized pistons and stroker applications
• 0.050-inch compression thickness for fine-tuning compression ratios
• Pro Copper series design for extreme performance and racing applications
• Direct fit for Mopar B-Series and RB-Series big block engines (361, 383, 400, 413, 426, 440 CI)
• Sold individually for custom engine building flexibility

SCE Pro Copper head gaskets are designed for serious engine builders who demand maximum performance and reliability. The solid copper construction provides excellent conformability to deck surfaces and cylinder heads, creating a superior seal even under extreme cylinder pressures. These gaskets are particularly well-suited for supercharged, turbocharged, and nitrous oxide applications where stock-style composite gaskets cannot withstand the increased combustion pressures.