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Cometic C5255-120 Chevrolet W-Series MLS Cylinder Head Gasket Bore - 348/409 4.200

(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

C5255-120
8 reviews
Sale Price

$229.66

Estimated ship date Monday, November 23

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Product Details

The Cometic C5255-120 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet 348 and 409 cubic inch W-Series big block V8 engines. This precision gasket provides exceptional sealing reliability for both street and performance applications.

Key Specifications:

  • Bore Size: 4.200 inches
  • Compressed Thickness: .120 inches (3.05mm)
  • Multi-Layer Steel (MLS) construction for superior sealing
  • Designed for Chevrolet 348/409 W-Series big block engines
  • Accommodates higher cylinder pressures than conventional gaskets

Features and Benefits:

  • MLS technology provides multiple layers of stainless steel with elastomeric coatings for optimal conformability
  • Superior resistance to blowout and combustion leaks under high boost and compression conditions
  • Precision manufactured to exacting tolerances for consistent bore dimensions
  • Reusable in some applications when properly maintained
  • Ideal for modified engines with increased compression or forced induction

Cometic gaskets are trusted by professional engine builders and racers worldwide for their durability and consistent performance. This gasket is designed to handle the unique requirements of the classic Chevrolet W-Series engine architecture.

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

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