My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Cometic C5668-040 Ford Series MLS Cylinder Head Gasket Bore Thick - 385 4.670 040

(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 C5871-027

Manufacturer

Picture for manufacturer Cometic

Part Number

C5668-040
15 reviews
Sale Price

$103.89

In Stock (6)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Cometic C5668-040 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Ford 385 Series big block engines. This precision-engineered gasket features a 4.670" bore diameter and .040" compressed thickness, making it ideal for performance builds and engine rebuilds requiring exact sealing specifications.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior sealing and durability
  • 4.670" bore diameter designed for Ford 385 Series engines
  • .040" compressed thickness for precise compression ratio tuning
  • Engineered to withstand high combustion pressures and extreme temperatures
  • Stainless steel construction resists corrosion and provides excellent recovery characteristics
  • Embossed active sealing beads conform to irregular sealing surfaces

Cometic MLS gaskets are the choice of professional engine builders and performance enthusiasts worldwide. The multi-layer design allows the gasket to adapt to thermal expansion and contraction cycles while maintaining a reliable seal. This gasket is compatible with Ford 385 Series engines including 429 and 460 cubic inch variants when machined to the appropriate bore size.

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

It wasn't needed because it was another part and it has to go to the dealer .

Great price

So simple and convenient

Great first time experience

Great product, delivery was fast.

Great service overall good exidience highly recommended

Delivered on time & very satisfied with product. Thank you Autoplicity!

Resonator was a perfect fit for my Son's girlfriends 2007 Saturn ion. Shipping time could be improved vs your competitor's. It took 6 business days for product to arrive.

Excellent website, easy to find, best price online

You can tell customer service is important to this company. Not only were the prices lower than other places but they communicate the status of the order and shipping very well. They obviously care what people think. I was suspicious of all the positive comments but decide to try them anyways. Very happy I did and definitely plan on buying from them again.

This company offers profesional service at a very competitive price. The header collectors i ordered were not available at the big speed outlets. The fast shipping was also a plus. I would recomend Autoplicity to anyone who needs parts in a hurry !

Great price for the item, almost half off. Good website for auto parts

Easy to use web site. Quickly found what I needed. Smooth check out and SUPER FAST delivery. Couldn't ask for a better transaction experience. Bookmarked and for sure "GO TO" for next auto parts search. Thanks Autoplicity

Great exchange. Received product as described and in a timely manner. Thanks! Will Do business again

I am impressed with they mail order service. Recommended.

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy