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Cometic C5403-070 Chevy Small Block MLS Head Gasket Bore - V8 4.200 070

(GMC G2500 1979-86, K1500 1979-86, C1500 1979-86, K2500 1979-86, Jimmy 1970-86, C3500 1979-86, K2500 Suburban 1979-86, K3500 1979-86 + 168 more models)

Manufacturer

Picture for manufacturer Cometic

Part Number

C5403-070
4 reviews
Sale Price

$130.06

Estimated ship date Friday, November 20

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Product Details

The Cometic Gaskets C5403-070 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Generation-1 Small Block V8 engines. This high-performance gasket features a .070" compressed thickness and a 4.200" bore diameter, making it ideal for performance builds and engine rebuilds requiring precise sealing.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior sealing and durability under high cylinder pressures
  • 4.200" bore diameter accommodates standard and mildly overbored applications
  • .070" compressed thickness allows for custom compression ratio tuning
  • Undersized water ports designed for aftermarket cylinder heads, enabling custom port matching and optimization
  • Embossed stainless steel layers with elastomeric coatings provide exceptional rebound characteristics
  • Resists blowout and maintains consistent sealing through heat cycles

Cometic's MLS gaskets are the preferred choice of engine builders and performance enthusiasts for applications ranging from street performance to full competition. The undersized water ports give you the flexibility to match your specific aftermarket heads for optimal coolant flow. Compatible with Gen-1 Chevy Small Block engines including 265, 283, 302, 327, 350, and 400 cubic inch variants when used with appropriate aftermarket cylinder heads.

Products specifications

Fits

GMC G2500 1979-86, K1500 1979-86, C1500 1979-86, K2500 1979-86, Jimmy 1970-86, C3500 1979-86, K2500 Suburban 1979-86, K3500 1979-86, C15/C1500 Pickup 1967-74, C2500 1979-86, K1500 Suburban 1979-86, G25/G2500 Van 1967-74 + 164 more models

Prop 65

WARNING: Cancer and Reproductive Harm - www.p65warnings.ca.gov

Material

Multi-layer Steel

Item shipped 5 days after order was placed. Worth the wait for the great price however. Order Number: 18722

Prices were the best I was able to find for my part!!

Autoplicity has an abundance of name brand parts at unbeatable prices. Customer service was also great to deal with. Receipt and tracking info was provided promptly.

I needed to verify the part was correct. The telephone staff was very helpful, professional and informed about your products.

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