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Cometic C5434-045 MLS Cylinder Head Gasket Chevy Big Block Bore - for V8 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

C5434-045
13 reviews
Sale Price

$98.08

4 left at this price

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Usually delivered within 2 days

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Product Details

The Cometic C5434-045 is a high-performance multi-layer steel (MLS) cylinder head gasket engineered for Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 engines. This gasket features a compressed thickness of .045 inches and is designed for a 4.630-inch bore diameter, making it suitable for both stock and modified applications.

Key Features:

  • Multi-layer steel construction provides superior sealing and durability under high combustion pressures
  • 4.630-inch bore diameter accommodates standard and slightly overbored Big Block applications
  • .045-inch compressed thickness allows for precise compression ratio tuning
  • Undersized water ports designed specifically for aftermarket cylinder heads, allowing custom port matching and optimization
  • Embossed stainless steel armor around combustion chamber and coolant passages for maximum sealing
  • Compatible with aluminum and iron cylinder heads

Cometic MLS gaskets are the preferred choice for performance and racing applications where reliable sealing is critical. The undersized water ports give engine builders the flexibility to custom-match cooling passages to their specific aftermarket heads, eliminating potential leakage paths and optimizing coolant flow.

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

I prefer the old school method of only replacing the wiper blades instead of the entire wiper arm & autoplicity has wiper blades in stock. I received them in less than a week.

X

none

Parts have not been put on yet will contact on how it goes

Found what I needed at right price.

Loved to see good reviews and excellent prices!!!!

Order # 26695 I ordered an EGT and a gauge pod. It showed up at my house 4 days later exactly as I had ordered it. The Prices are unbeatable!

Very good

seemed a bit hard to find products, but the prices were great and delivery prompt

This was my first time buying from Autoplicity. I had never heard of the site but gave it a shot. I ordered an Autometer gauge and pod and paid less than the price of just the gauge at other vendors. The two items shipped a day later (I ordered Sunday, shipped Monday). I have no complaints at this time.

This is the first time I've ordered from this site, but things look good from what I can tell so far. They had the parts I was looking for (including a fairly specialized racing part) for a price slightly lower than other places I had looked, and my order shipped the next business day. At the time I wrote this, they were also offering $5 back on my order for writing a review. ;-)

Thanks for you swift respond for the email and your accurate information and i hope to deal with you again

The correct product that I ordered, and easy to find through there web site.thanks

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