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Cometic C5668-051 Ford Series MLS Cylinder Head Gasket Bore Thick - 385 4.670 051

(Ford F-150 1975-79, Mustang 1970-71, F-250 1973-79, 1983-96, Thunderbird 1968-76, F-350 1973-79, 1983-97, Galaxie 500 1969-74 + 32 more models)

Part of: Cometic Ford Series MLS Cylinder Head Gasket Bore Thick

Other options in this family: Cometic C5667-060 Cometic C5667-070 Cometic C5667-040 Cometic C5668-040 Cometic C5871-027

Manufacturer

Picture for manufacturer Cometic

Part Number

C5668-051
7 reviews
Sale Price

$103.72

In Stock (7)

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Product Details

The Cometic C5668-051 is a Multi-Layer Steel (MLS) cylinder head gasket designed for the Ford 385 Series Big Block V8, featuring a 4.670-inch bore and a compressed thickness of .051 inches. Engineered for high-performance and racing applications, this gasket delivers superior sealing reliability on both naturally aspirated and forced-induction big block Ford engines.

Key Features:

  • Multi-Layer Steel (MLS) Construction — Three layers of stainless steel provide exceptional strength, rebound capability, and corrosion resistance
  • Viton-Coated Outer Layers — Embossed outer layers are coated on both sides with Viton fluoroelastomer rubber, heat resistant to 482°F (250°C), engineered to handle harsh sealing environments and varying load conditions
  • Uncoated Stainless Steel Center (Shim) Layer — Provides the desired compressed thickness of .051" while maintaining structural rigidity
  • No Sealants Required — MLS design provides maximum sealing performance straight out of the box without additional gasket sealer
  • Aluminum-to-Aluminum & Aluminum-to-Cast-Iron Compatible — Ideal for mixed-material head and block combinations, withstanding the shear forces created by dissimilar metals
  • Standard 10 Head Bolt Pattern — Designed specifically for the standard Big Block Ford 460 V8 bolt pattern (excludes 429 Boss)
  • Round Bore Shape — 4.670" bore diameter for oversized or stroked BBF applications

The Cometic C5668-051 is sold individually and is manufactured to order, making it a go-to choice for engine builders seeking precision sealing performance on Ford 429 and 460 big block engines. Compatible with the Ford 385 Series (429/460) excluding the 429 Boss.

Specifications:

  • Part Number: C5668-051
  • Material: Multi-Layer Steel (MLS)
  • Compressed Thickness: .051"
  • Bore Size: 4.670" (Round)
  • Number of Layers: 3
  • Head Bolt Pattern: Standard 10-bolt Big Block Ford
  • Orientation: None

Products specifications

Fits

Ford F-150 1975-79, Mustang 1970-71, F-250 1973-79, 1983-96, Thunderbird 1968-76, F-350 1973-79, 1983-97, Galaxie 500 1969-74, F-100 1973-74, 1979, Fairlane 1970, Ranchero 1970-77, Torino 1970-76, Falcon 1970, E-350 Econoline 1975-96 + 26 more models

Prop 65

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

Material

Multi-layer Steel

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