Cometic C5215-056 MLS Cylinder Head Gasket Bore GM Small Block - 4.270 V8

The Cometic C5215-056 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM Small Block V8 engines with Dart and Brodix aftermarket cylinder heads. This precision gasket features a 4.270-inch bore diameter with 4.500-inch bore centers and a compressed thickness of .056 inches (1.4mm).

Key Features:

• Multi-Layer Steel (MLS) construction for superior sealing and durability
• 4.270-inch bore diameter accommodates performance builds with overbored cylinders
• .056-inch compressed thickness provides optimal compression ratio control
• Designed for Dart and Brodix small block Chevy aftermarket heads
• MLS technology allows micro-movement between engine block and cylinder head
• Embossed stainless steel with multiple layers for maximum sealing pressure
• Resists corrosion and handles extreme cylinder pressures

Cometic MLS gaskets are the preferred choice for high-performance and racing applications where engine temperatures and cylinder pressures exceed the capabilities of traditional composite gaskets. The multi-layer design distributes load evenly across the sealing surface while accommodating thermal expansion and minor surface imperfections. Ideal for turbocharged, supercharged, and naturally aspirated performance builds.