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Cometic C5434-040 MLS Cylinder Head Gasket Bore Big Block Chevy - 4.630

(Chevrolet Camaro 1967-72, Corvette 1965-74, Impala 1965-76, Malibu 1965-67, 1973-75, C1500 1990, Chevelle 1965-73, Blazer 1973-74 + 96 more models)

Part of: Cometic MLS Cylinder Head Gasket Chevy Big Block Bore

Other options in this family: Cometic C5331-080 Cometic C5816-045 Cometic C5332-040 Cometic C5760-040 Cometic C5434-066

Manufacturer

Picture for manufacturer Cometic

Part Number

C5434-040
16 reviews
Sale Price

$96.58

1 left at this price

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Usually delivered within 2 days

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Product Details

The Cometic C5434-040 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 engines. Featuring a 4.630-inch bore diameter and .040-inch compressed thickness, this gasket is designed for high-performance applications requiring superior sealing and durability.

Key Features:

  • Multi-Layer Steel (MLS) construction provides maximum sealing strength and reliability under extreme cylinder pressures
  • 4.630-inch bore diameter accommodates standard and slightly modified big block configurations
  • .040-inch compressed gasket thickness for precise compression ratio tuning
  • Undersized water ports allow for custom port matching and coolant flow optimization
  • Specifically designed for aftermarket cylinder heads with customizable water port configurations
  • Premium gasket coating ensures excellent conformability to head and block surfaces

Cometic MLS head gaskets are the choice of professional engine builders and racers who demand uncompromising reliability. The undersized water port design gives builders the flexibility to match ports precisely to their specific cylinder head and block combination, eliminating potential leakage paths while optimizing coolant flow for maximum performance.

Products specifications

Fits

Chevrolet Camaro 1967-72, Corvette 1965-74, Impala 1965-76, Malibu 1965-67, 1973-75, C1500 1990, Chevelle 1965-73, Blazer 1973-74, C10 Pickup 1968-74, Caprice 1966-76, C10 1975-80, El Camino 1966-75, Monte Carlo 1970-75, Nova 1969-72 + 90 more models

Prop 65

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

Material

Multi-layer Steel

Quick and easy so far!

Great service

Couldn't find the optional insert for the product , pan 20 . Only found that on scribblers catalog . Should be listed as an option on your page .

Thank you for your prompt service.

Great experience!

Quick & easy, so far...

Everything arrived as advertised. Good experience. Will order thru here again if needed.

Great price easy checkout, looking forward to the purchased product first timer

I was very impressed by Autoplicity's customer service and excellent pricing on brand name products. Also, they provided lightning fast shipping even as the holiday weekend approached.<br>As much as I want to see everyone in this world to "live long and prosper," I was especially pleased to deal with a company that did not export their customer service to another country. <br>I look forward to doing business again with Autoplicity.

Item shipped 5 days after order was placed. Worth the wait for the great price however. Order Number: 18722

I was shopping for a bed cover for my truck and found that autoplicity had the lowest price when I was ready to buy. After I placed the order, I got an email notifying me that my order was shipped and got a tracking number. Seamless transaction so far. Very happy.

I found them doing a search for a clutch kit, they are hands down one of the easiest companys to work with and the prices cant be beat..... I looked everywhere

The best prices and fast shipping!

GREAT PRICES AND COMMUNICATION!!!! HIGHLY RECOMMENDED STAFF AND PRODUCTS!!!!!

Autoplicity had the best price on the item on the ski rack I needed! I ordered it on a Friday and it was delivered the following Wednesday.

This was my first order from Autoplicity, and I was not sure what to expect. The parts were shipped quickly, and Autoplicity had the best price by far.

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