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Cometic C5256-027 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

C5256-027
9 reviews
Sale Price

$110.23

Estimated ship date Monday, November 23

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Product Details

The Cometic C5256-027 is a precision-engineered multi-layer steel (MLS) cylinder head gasket designed specifically for Chevrolet 348 and 409 cubic inch W-Series big block V8 engines. This high-performance gasket features a .027" (0.027 inch) compressed thickness and a 4.375" bore diameter, making it ideal for both stock rebuilds and performance applications.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior sealing and durability
  • .027" compressed thickness for optimal compression control
  • 4.375" bore diameter engineered for 348/409 W-Series engines
  • Resists combustion chamber pressures and extreme temperatures
  • Provides excellent rebound characteristics and conformability
  • Compatible with aluminum and cast iron cylinder heads

Cometic's MLS gasket technology uses multiple layers of stainless steel with proprietary coatings to create a gasket that maintains seal integrity under the most demanding conditions. The embossed layers provide multiple sealing points while allowing for thermal expansion and contraction. This gasket is engineered to meet the unique requirements of the classic Chevrolet W-Series big block platform, which features a different head bolt pattern and deck design compared to later Mark IV big blocks.

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

Material

Multi-layer Steel

Awesome

Great,Easy,and Cheap

My order was filled and shipped promptly. The parts were exactly as advertised and worked perfectly. Order with confidence.

Easy

Shopping was quick and easy.

Great product, reasonably priced, fast delivery

very good

Easy as 123. When I get my parts I will do a follow up

So far, so good.

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