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Cometic C15171-023 Ford Y-Block MLS Cylinder Head Gasket Bore - V8 3.860 023 Left Side

(Ford F-250 1954-65, Thunderbird 1955-58, F-350 1954-65, Galaxie 500 1962, F-100 1954-65, Fairlane 1955-61, Ranchero 1957-59, Galaxie 1959-62 + 16 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

C15171-023
9 reviews
Sale Price

$108.87

Estimated ship date Tuesday, November 24

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Product Details

The Cometic C15171-023 is a Multi-Layer Steel (MLS) cylinder head gasket engineered specifically for Ford Y-Block V8 engines, including 239, 256, 272, 292, and 312 cubic inch applications. This left-side gasket features a compressed thickness of .023 inches and a 3.860-inch bore diameter with valve pocketing to prevent chamber intrusion.

MLS Construction:

  • 3-layer stainless steel construction with embossed outer layers
  • Viton-coated spring steel outer layers for superior sealing and corrosion resistance
  • Load-controlled embossments distribute clamping force evenly across sealing area
  • Stainless steel center layer provides exceptional rebound characteristics and strength
  • Valve pocketed bore design prevents interference with combustion chamber

Key Features:

  • Compressed thickness: .023 inches (0.584mm)
  • Bore size: 3.860 inches
  • Left-hand orientation (LHS)
  • No sealants or re-torque required when properly installed
  • Requires smooth, flat surface finish of 50 RA or finer for optimal sealing
  • Resists shearing forces in high-performance applications

Cometic MLS gaskets are designed for engines requiring superior sealing performance and durability. The multi-layer steel construction provides excellent conformability to head and block surfaces while maintaining exceptional strength under extreme cylinder pressures. This gasket is ideal for stock rebuilds, mild performance builds, or compression ratio adjustments on classic Ford Y-Block engines.

Note: This is the left-side gasket only. Right-side gasket (C15170-023) sold separately. Surface preparation is critical for MLS gasket success.

Products specifications

Fits

Ford F-250 1954-65, Thunderbird 1955-58, F-350 1954-65, Galaxie 500 1962, F-100 1954-65, Fairlane 1955-61, Ranchero 1957-59, Galaxie 1959-62, Custom 1957, Country Sedan 1954-62, Ranch Wagon 1954-62, Custom 300 1957-60, P-350 1957-64 + 11 more models

Prop 65

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

Material

Multi-layer Steel

Very easy ordering-Great Prices!

Easy Process

great price and free shipping

Fast and easy!

Ty

Fast and easy

Easy to order; show me the part!

Great !!

Fast and easy.

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