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Cometic C5640-036 GM/Mercury Marine Gen-IV Big Block MLS Cylinder Head Gasket - V8

Part of: Cometic GM Big Block MLS Cylinder Head Gasket Bore

Other options in this family: Cometic C5334-040 Cometic C5333-089 Cometic C5755-080 Cometic C5817-040 Cometic C5640-070

Manufacturer

Picture for manufacturer Cometic

Part Number

C5640-036
6 reviews
Sale Price

$100.59

Estimated ship date Tuesday, November 24

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Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Cometic C5640-036 is a premium Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for GM and Mercury Marine 1050 Gen-IV big block V8 engines. This high-performance gasket features a .036" compressed thickness and accommodates a 4.580" bore diameter, providing superior sealing for demanding marine and automotive applications.

Key Features:

  • Multi-Layer Steel (MLS) construction for superior durability and heat resistance
  • .036" compressed gasket thickness for precise compression control
  • 4.580" bore diameter designed for Gen-IV big block applications
  • Includes two slotted lifter valley bolt holes for proper engine assembly
  • Compatible with GM and Mercury Marine 1050 Gen-IV V8 engines
  • MLS design provides excellent recovery and maintains seal integrity under extreme conditions

Cometic's MLS gaskets utilize multiple layers of stainless steel with proprietary coatings to create a superior seal that withstands high cylinder pressures and extreme temperatures. The precision-cut design ensures accurate fitment and reliable performance in both marine and high-performance automotive applications.

Products specifications

Prop 65

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

Material

Multi-layer Steel

Ordered a sling to store my roof rack. There was an issue with the supplier which was quickly resolved by the Autoplicity staff. Great customer service -- most responsive I've ever seen.<br><br>Best prices around.

Super easy to browse web site and find the product I wanted.<br>The price was unmatched.<br>Shipping was fast and cheap.<br>Super shopping experience.

Great prices, helpful customer service. Ordered 2 by mistake. And they got it cleared up real fast. Saved over $80 off retail. Will be ordering from the, again!!!!! <br>

Rather amazing and uneventful service in this day and age. Ordered a Thule bike rack for my Nissan Murano. It was in stock (unusual for high-end specialty products), shipped the next day, and was on my doorstep in a few days (excellent for a 60 lb. large box). I'd buy anything from these people without any reservation. AND, your order is insured - completely superfluous. Oh, and did I mention, the lowest price I could find ANYWHERE, and not by a few dollars - a lot.

Excellent service with the actual stock on hand, shipment was made the next day and a tracking number was provided. I have tried 2 other online supply stores which don't know what they have in stock.

Autoplicity offered the best internet price, and utilized Paypal for guaranteed customer service. Shipping tracking through UPS is accurate and customer focused. I'm very pleased with the retail experience, and will use Autoplicity on future orders and best prices.

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