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Cometic C5666-120 Ford Series MLS Cylinder Head Gasket Bore Thick - 385 4.400 120

(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 C5668-051 Cometic C5668-040

Manufacturer

Picture for manufacturer Cometic

Part Number

C5666-120
4 reviews
Sale Price

$232.07

Estimated ship date Sunday, November 22

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Product Details

The Cometic C5666-120 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Ford 385 Series big block engines, including the 429 and 460 cubic inch V8 motors. Featuring a 4.400" bore diameter and .120" compressed thickness, this gasket is designed for high-performance and racing applications where increased compression ratios and extreme cylinder pressures demand superior sealing technology.

Key Features:

  • Multi-Layer Steel construction with multiple layers of stainless steel for maximum durability and conformability
  • .120" (120 thousandths) compressed thickness allows for precise compression ratio tuning
  • 4.400" bore size accommodates stock and slightly over-bored cylinders
  • Engineered specifically for Ford 385 Series engines (429, 460)
  • Superior sealing properties handle extreme cylinder pressures in boosted and high-compression applications
  • Reusable design when properly installed and removed
  • Requires proper surface preparation: 50 RA or smoother surface finish recommended

Cometic MLS gaskets are the preferred choice of engine builders and racers who demand reliable sealing performance under the most demanding conditions. The multi-layer construction allows the gasket to conform to minor surface imperfections while maintaining consistent clamping pressure across the entire sealing surface.

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

Great experience! Shipping was fast and the price was amazing. I'd actually wondered if it was too good to be true, but my ramps showed up today (exactly a week from when I placed my order) and they look great.

Great price and fast shipping! Tech support helped me before the sale to make sure I was ordering the right part

Autoplicity got my air filters shipped next day after I placed my order. Cheap prices, and good customer is what they stand for. I will definitely be looking at their site in the future for my car needs. <br>

Great prices with fast shipping

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