COMETIC C9239 Head Gasket for 1936-1947 Knucklehead - Stock Bore, .043" Thickness

Head Gasket - Stock Bore - .043" - '36-'47 Knucklehead

The COMETIC C9239 head gasket is engineered for long-term reliability and superior performance in vintage Harley-Davidson Knucklehead engines from 1936 to 1947. Crafted from premium materials, this gasket features a multi-layer steel (MLS) design with two outer Viton®-coated embossed spring steel layers and an inner steel layer, providing excellent support and heat resistance. The high-quality composite material with a steel tang center laminate ensures a durable seal that resists delaminating, cracking, and brittleness under demanding conditions. Manufactured in the USA, this gasket is designed to withstand extreme temperatures and fuel exposure, making it an ideal choice for restoration or performance upgrades of classic engines. The .043-inch thickness allows for precise compression and optimal sealing, ensuring engine efficiency and longevity. Whether rebuilding or maintaining your vintage Harley, the COMETIC C9239 gasket guarantees a reliable seal and consistent engine performance over time.

Features:

• Premium multi-layer steel (MLS) design with steel tang center laminate for durability

• Fuel-resistant composite materials that resist creep, cracking, and brittleness

• Multi-layer steel outer layers with Viton®-coated spring steel for heat tolerance

• Inner steel support layer for added stability and support

• Made in the USA for quality assurance and manufacturing standards