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Cometic C5846-066 Pontiac MLS Head Gasket Bore - 400/428/455 V8 4.380

(Pontiac GTO 1968-73, Firebird 1968-79, Grand Prix 1968-77, Grand Am 1973-75, Bonneville 1968-78, LeMans 1968-77, Catalina 1968-78 + 12 more models)

Part of: Cometic MLS Head Gasket Bore Honda

Other options in this family: Cometic C10336-036 Cometic H4230050S Cometic C9931 Cometic C10084040 Cometic C10083-030

Manufacturer

Picture for manufacturer Cometic

Part Number

C5846-066
4 reviews
Sale Price

$144.81

Estimated ship date Monday, November 23

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Product Details

The Cometic Gaskets C5846-066 is a precision-engineered Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Pontiac 400, 428, and 455 cubic inch V8 engines. This high-performance gasket features a compressed thickness of .066 inches and accommodates a 4.380-inch bore diameter, making it ideal for stock rebuilds and performance applications.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior sealing and durability
  • Compressed thickness: .066 inches (66 thousandths)
  • Bore size: 4.380 inches
  • Application-specific design for Pontiac 400/428/455 V8 engines
  • Provides excellent combustion sealing and resistance to extreme temperatures
  • Multiple layers of stainless steel with elastomeric coatings ensure consistent clamping pressure

Cometic MLS head gaskets are manufactured using multiple layers of stainless steel, which allows the gasket to adapt to flange irregularities and maintain a superior seal under high cylinder pressures and temperatures. The embossed layers provide multiple sealing points while the proprietary coating ensures optimal surface conformity. This gasket is an excellent choice for both street and performance builds requiring reliable head sealing on classic Pontiac V8 engines.

Products specifications

Fits

Pontiac GTO 1968-73, Firebird 1968-79, Grand Prix 1968-77, Grand Am 1973-75, Bonneville 1968-78, LeMans 1968-77, Catalina 1968-78, Tempest 1968-70, Parisienne 1968-74, 1976, Grandville 1971-75, Executive 1968-70, Grand LeMans 1975-77 + 7 more models

Prop 65

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

Material

Multi-layer Steel

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Great experience. Good service. Reasonable prices.

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