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Cometic C5434-051 MLS Cylinder Head Gasket for Chevrolet Big Block Bore - 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 Bore Honda

Other options in this family: Cometic C4311-040 Cometic C4251-030 Cometic C4232-030 Cometic C5245-027 Cometic C4962-028

Manufacturer

Picture for manufacturer Cometic

Part Number

C5434-051
4 reviews
Sale Price

$98.08

In Stock (10+)

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Usually delivered within 2 days

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Product Details

The Cometic C5434-051 is a premium multi-layer steel (MLS) cylinder head gasket engineered for Chevrolet Mark-IV and GM Gen-V/VI Big Block V8 engines. This high-performance gasket features a .051" compressed thickness and is designed specifically for 4.630" bore applications with aftermarket cylinder heads.

Key Features:

  • Multi-layer steel (MLS) construction provides superior sealing and durability under extreme pressures and temperatures
  • 4.630" bore diameter accommodates standard and modified big block configurations
  • .051" compressed gasket thickness allows for precise compression ratio tuning
  • Undersized water ports enable custom port matching and coolant flow optimization for aftermarket heads
  • Compatible with Chevrolet Mark-IV, Gen-V, and Gen-VI big block V8 engines
  • Engineered for high-performance and racing applications

Cometic gaskets are manufactured using advanced materials and processes to ensure maximum reliability in demanding performance environments. The MLS design features multiple layers of stainless steel with elastomeric coatings that conform to sealing surfaces while maintaining excellent recovery properties. The undersized water ports provide the flexibility needed when working with aftermarket cylinder heads that may have different port configurations than OEM castings.

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

My dealings with this site have been great. I made a mistake on my address and emailed them to change it. I got quick responses every time. Would definitely use the site again.

Lightning fast service! Good prices.

I'll start off saying that Autoplicity's prices are unbeatable...but, I placed my order on a Saturday night (which I know is the weekend)on a in stock part and it took them till the following Thursday to ship it out. I use my truck to make a living and was hoping to get it a little quicker, but now I'm down another 3-4 days till the part gets here. Also, I sent a e-mail on Tuesday evening regaurding my order and never got a response.

Autoplicity, was very easy to use, very fast, and an enjoyable experience. I would recommend to my closest friends!!

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