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Cometic C5755-027 Buick Big Block MLS Cylinder Head Gasket Bore - V8 4.400

(Buick Regal 1973-74, LeSabre 1970-74, Century 1973-74, Skylark 1967-68, 1970-71, Riviera 1967-74, Electra 1967-74, Centurion 1971-73 + 6 more models)

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

C5755-027
4 reviews
Sale Price

$107.16

Estimated ship date Thursday, November 26

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Live-in-stock inventory

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Fitment guaranteed

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Product Details

The Cometic C5755-027 is a premium Multi-Layer Steel (MLS) cylinder head gasket designed specifically for Buick Big Block V8 engines. Engineered for high-performance and racing applications, this gasket delivers superior sealing and durability under extreme temperatures and pressures.

Key Specifications:

  • Bore Size: 4.400 inches
  • Gasket Thickness: .027 inches (compressed)
  • Multi-Layer Steel (MLS) construction
  • Application: Buick Big Block V8 engines

Features and Benefits:

  • Multi-layer stainless steel construction provides exceptional strength and conformability
  • Superior resistance to blowout and heat degradation compared to traditional composite gaskets
  • Precision-cut bore openings ensure accurate cylinder sealing
  • Thin .027" profile ideal for maintaining or slightly increasing compression ratios
  • Designed to withstand high cylinder pressures in boosted and naturally aspirated applications
  • Requires proper surface preparation (RA finish 50-60 recommended) for optimal performance

Cometic MLS gaskets are the choice of professional engine builders and serious enthusiasts who demand reliable sealing in high-stress environments. This gasket is ideal for street performance, drag racing, and other demanding applications where engine durability is critical.

Products specifications

Fits

Buick Regal 1973-74, LeSabre 1970-74, Century 1973-74, Skylark 1967-68, 1970-71, Riviera 1967-74, Electra 1967-74, Centurion 1971-73, GS 455 1970-72, Wildcat 1967-70, Estate Wagon 1970-74, Gran Sport 1967, Sportwagon 1968-70, GS 400 1968-69

Prop 65

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

Material

Multi-layer Steel

Parts were actually in-stock unlike every other retailer I tried. Quick shipping too.

Quick and easy, awesome price.

I looked all over the web for the Thule sidekick car top carrier and autoplicity had the best price and the website was easy to maneuver through. It willbe my first stop for shopping.

Am happy with price, lower than anywhere else. Product is perfect and shipping was fast. Had to call because website was down while price increases were uploaded, cost an extra $20 but still worth the savings. Would definitely buy from again.

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