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Cometic C5255-140 MLS Cylinder Head Gasket for Chevrolet W-Series Big Block - 348/409 V8

(Chevrolet Impala 1958-65, C10 Pickup 1960-61, El Camino 1959-60, Suburban 1961, K10 Pickup 1960-61, C20 Pickup 1960-61, Bel Air 1958-65 + 14 more models)

Part of: Cometic MLS Cylinder Head Gasket Bore Honda

Other options in this family: Cometic C4311-040 Cometic C4251-030 Cometic C4232-030 Cometic C4962-028 Cometic C5434-051

Manufacturer

Picture for manufacturer Cometic

Part Number

C5255-140
5 reviews
Sale Price

$232.11

Estimated ship date Monday, November 23

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Product Details

The Cometic C5255-140 is a premium multi-layer steel (MLS) cylinder head gasket engineered specifically for Chevrolet 348 and 409 cubic inch W-Series big block V8 engines. This high-performance gasket features a .140-inch compressed thickness and a 4.200-inch bore diameter, making it ideal for both stock rebuilds and high-performance applications.

Key Features:

  • Multi-layer steel construction provides superior sealing and durability under extreme cylinder pressures
  • .140-inch (3.56mm) compressed thickness for precise deck height control
  • 4.200-inch bore diameter designed for 348/409 W-Series engine specifications
  • Embossed stainless steel layers with a Viton rubber coating for maximum combustion seal
  • Reusable design allows for multiple installations when properly maintained
  • Eliminates the need for retorquing after initial installation

Cometic MLS gaskets are the choice of professional engine builders and racers worldwide. The multi-layer design allows the gasket to adapt to minor surface imperfections while maintaining consistent clamping pressure across the entire sealing surface. Compatible with both cast iron and aluminum cylinder heads when surface finish requirements are met (typically 50 RA or smoother for MLS gaskets).

Products specifications

Fits

Chevrolet Impala 1958-65, C10 Pickup 1960-61, El Camino 1959-60, Suburban 1961, K10 Pickup 1960-61, C20 Pickup 1960-61, Bel Air 1958-65, K20 Pickup 1960-61, C30 Pickup 1960-61, Biscayne 1958-65, Truck 1958, 1960, Kingswood 1959-61 + 9 more models

Prop 65

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

it as easy to use

It’s easy and hope shipping is fast

So far so good. Wish we could find a Dorman 45345 Door Glass Attaching Clips (Only 7 Remaining) Part number: 45345 Manufacturer: Dorman

Wish the shipping was faster. I received the wrong part, but after checking it did show I ordered the wrong part. That's on me.

It was easy to search and purchase. Although I wish it gave me an estimated delivery time. But perhaps I didn’t see it. But over all great price!

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