My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Cometic C5711-070 MLS Cylinder Head Gasket Pontiac Bore - 400/428/455 V8 4.160

(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)

Manufacturer

Picture for manufacturer Cometic

Part Number

C5711-070
6 reviews
Sale Price

$147.82

Estimated ship date Thursday, November 26

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Cometic C5711-070 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 .070 inches, making it ideal for both stock rebuilds and performance applications.

Key Features:

  • Multi-Layer Steel (MLS) construction provides superior sealing and durability under extreme temperatures and pressures
  • 4.160-inch bore diameter optimized for Pontiac big block V8 engines
  • .070-inch compressed thickness allows for precise compression ratio tuning
  • Exceeds OEM specifications for reliability in performance and racing applications
  • Embossed stainless steel layers with elastomeric coatings ensure maximum combustion seal
  • Resistant to warping, corrosion, and blow-out under high cylinder pressures

Cometic's MLS gaskets are the preferred choice of professional engine builders and racers worldwide. The multi-layer design allows the gasket to adapt to minor surface imperfections while maintaining a complete seal around combustion chambers, coolant passages, and oil return ports. This gasket is compatible with aluminum and cast iron cylinder heads and blocks.

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

I have looked for this product many times but was disappointed<br>in the price. could not beleive the price at Autoplicity. thank <br>you very much keep up good work Ray

Bought some wire looms for my Chevy from them. Great price, service, and shipping speed!

Best price. Best shipping rates.

We looked a lot of places online for the steering stabilizer for our vehicle. We priced and looked to find out who had the best product and fastest shipping. We were so glad that Autoplicity was able to have just what we needed. We highly recommend that you visit autopicity.com for all you vehicle needs and we thank Autoplicity for their expediency in getting us our stabilizer.

Good prices, fast shipping, A+

After checking amazon, ebay, various other general and specialty online parts suppliers and local brick and mortar supply houses, Autoplicity's was hands down the best overall (price + shipping) price for the product.

Share icon
Return Policy
Returns are easy at Autoplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy