My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Cometic C5478-045 MLS Cylinder Head Gasket Ford Windsor Bore - 302/351W 4.030 045

(Ford F-150 1975-96, Mustang 1968-73, 1979, 1983-85, 1995, Explorer 1996-2000, F-250 1969-74, 1977-96, Bronco 1968-96 + 53 more models)

Manufacturer

Part Number

C5478-045
Sale Price

$93.54

2 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

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 C5478-045 is a high-performance Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Ford 302 and 351W Windsor V8 engines. This precision gasket features a 4.030" bore diameter and .045" compressed thickness, making it ideal for SVO heads and performance engine builds.

Key Features:

  • Multi-Layer Steel (MLS) construction provides superior sealing and durability under extreme cylinder pressures
  • 4.030" bore diameter accommodates stock and slightly overbored cylinders
  • .045" compressed thickness allows for precise compression ratio tuning
  • Designed for Ford 302 and 351W Windsor small block V8 engines with SVO heads
  • Embossed stainless steel layers with Viton rubber coating ensure excellent conformability and rebound characteristics
  • Handles high cylinder pressures and extreme temperatures in forced induction and naturally aspirated applications
  • Requires proper surface preparation—deck surfaces should be smooth with RA finish of 50-60 micro-inches or better

Cometic MLS gaskets are the preferred choice for engine builders and performance enthusiasts seeking maximum reliability in high-performance and racing applications. The multi-layer design distributes cylinder pressure evenly while maintaining superior torque retention and eliminating the need for retorquing.

Products specifications

Fits

Ford F-150 1975-96, Mustang 1968-73, 1979, 1983-85, 1995, Explorer 1996-2000, F-250 1969-74, 1977-96, Bronco 1968-96, Thunderbird 1977-81, 1983-88, F-350 1972-97, Maverick 1971-77, Galaxie 500 1968-74, F-100 1969-83, Fairlane 1968-70 + 47 more models

Prop 65

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

Material

Multi-layer Steel

Fast and easy, good price & was able to pay with amazon

EASY TO NAVIGATE THE PAGE, FAST SHIPPING, OVERALL WONDERFULL TO DEAL WITH!!!! WILL SHOP THERE AGAIN!!!! THANK YOU!!!

Shipping was fast and without damage and the price was great.

Great customer service. My product came quickly and just as described. Can't beat the prices anywhere on the internet, I looked for 2 months before buying. Thanks!

Good prices and easy ordering process (order #18003). The only issue that I had was after placing the order, completing the entire process, I received three emails stating that "We noticed that you started checking out on our site, but didn't quite finish the process". After calling customer service, they ensured me that the order was complete. Since then, I receive the same email(3 emails at a time) on a daily basis. Just a little annoying, but easy enough to delete.

I placed an order for Race Ramps and not only were they the best price I could find, but the shipping time was excellent as well!

Autoplicity gave me no hassles ever, the price dropped on the product I ordered and I just contacted BuySafe and received the difference quickly. Order was shipped same day. I will buy them over and over again! Thank you Autoplicity.

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