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Cometic C5711-040 MLS Cylinder Head Gasket Pontiac 400/428/455 V8 4.160" Bore .040" Thick

(Pontiac GTO 1968-73, Firebird 1968-79, Grand Prix 1968-77, Grand Am 1973-75, Bonneville 1968-78, LeMans 1968-77, Catalina 1968-78 + 12 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 C4962-028 Cometic C5434-051

Manufacturer

Picture for manufacturer Cometic

Part Number

C5711-040
8 reviews
Sale Price

$107.16

Estimated ship date Tuesday, November 24

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Product Details

The Cometic C5711-040 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Pontiac 400, 428, and 455 cubic inch V8 engines. This high-performance gasket features a 4.160-inch bore diameter and a .040-inch compressed thickness, making it ideal for both stock rebuilds and performance applications.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior sealing and durability
  • 4.160-inch bore diameter optimized for Pontiac big-block V8 engines
  • .040-inch compressed thickness allows for precise compression ratio tuning
  • Engineered to withstand extreme cylinder pressures and temperatures
  • Embossed stainless steel layers with advanced coating technology
  • Eliminates gasket failure and coolant leaks common with composite gaskets
  • Reusable design for race applications when properly maintained

Cometic MLS gaskets are the industry standard for performance engine builders, offering exceptional conformability to deck surfaces while maintaining consistent clamping pressure. The multi-layer design allows the gasket to recover from thermal expansion cycles, ensuring a reliable seal throughout the engine's operating range. Compatible with Pontiac 400, 428, and 455 V8 engines commonly found in GTO, Firebird, Trans Am, Grand Prix, and other classic Pontiac muscle cars.

Products specifications

Fits

Pontiac GTO 1968-73, Firebird 1968-79, Grand Prix 1968-77, Grand Am 1973-75, Bonneville 1968-78, LeMans 1968-77, Catalina 1968-78, Tempest 1968-70, Parisienne 1968-74, 1976, Grandville 1971-75, Executive 1968-70, Grand LeMans 1975-77 + 7 more models

Prop 65

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

Material

Multi-layer Steel

The floor mats I purchased for my car work like a dream. They were just as described in the listing. The shipping was also pretty quick. I just wish the price was about $20 cheaper. Other than that I was completely satisfied.

After searching online I found the best price with free shipping here. Fast shipping and easy installation of my product.

3/13/2012<br>Order #6330 (3/12/3012)<br>Autoplicity had the cheapest price on the web for the Thule Raceway 3 Bike Rack...great customer service and speedy delivery.<br>Thanks...Mike P. NY

Very pleased with the service and quick shipping. Checked out through Amazon payments without any issues. Item ordred was the Hella Supertone Horns. Arrived in original box and packaging. Will not hesitate to order from Autoplicity in the future.

Super easy and Quick! Called Tech. Support to confirm my part selection/fit. Really fast delivery for coming from the east coast. BUT, Part was not as pictured. I actually purchased because of the BOSAL brand and the picture was identical to the one I nee

Very good service, product arrived promptly.

Recieved item in great shape. Could be a little faster with shipping, but over all, I had a good pleasant experience. Thank you.

Smooth transaction! Best price on the floor liner I was looking for, shipped promptly with tracking info provided, exactly as advertised. THANKS!!

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