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Cometic C5711-140 MLS Cylinder Head Gasket for Pontiac 400/428/455 V8

Manufacturer

Picture for manufacturer Cometic

Part Number

C5711-140
4 reviews
Sale Price

$229.67

Estimated ship date Thursday, October 22

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Product Details

The Cometic C5711-140 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 compressed thickness of .140 inches (140 thousandths), making it ideal for both stock rebuilds and high-performance applications.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior sealing and durability
  • 4.160" bore diameter optimized for Pontiac big-block V8 engines
  • .140" compressed gasket thickness
  • Engineered to withstand extreme cylinder pressures and temperatures
  • Accommodates thermal expansion and engine movement
  • Reusable design allows for multiple installations when properly maintained

Cometic's MLS gaskets utilize multiple layers of stainless steel with proprietary coatings to create a gasket that conforms to sealing surfaces while maintaining structural integrity. The embossed layers provide multiple sealing points that compensate for minor surface imperfections. This gasket is designed for Pontiac 400, 428, and 455 V8 engines commonly found in GTOs, Firebirds, Trans Ams, and other classic Pontiac performance vehicles.

Application Note: Proper surface preparation is critical for MLS gasket installation. Cylinder head and block surfaces should have a 50 RA finish or smoother for optimal sealing performance.

Products specifications

Prop 65 (C, R or CR)

CR

Prop 65 Yes/No

Yes

Material

Multi-layer Steel

Prop 65 - Short Label

Prop_65.jpg

Prop 65 - Short Label

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

Prop 65 Warning Label

Prop_65.jpg

Best prices I could find anywhere! Fast shipping. Will definitley buy from again.

Just order the 1108 turn over ball for 2010 Super Duty and received it within (5) days. Just can't wait to put it on and start pulling the trailer with my new diessel.

Lowest prices around the web and excellent customer service. The only real issue was the wait between placing the order and when it was shipped. Took 4 days but I chalk that up to the large amount of business they due to their prices being so competitive. For the lowest prices that I've seen I didn't mind waiting a bit longer!

Quick shipping, customer service followed through.

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