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Cometic Chrysler Gen-2 Hemi .040in MLS Cylinder Head Gasket - 4.375in Bore Cometic Gasket CGSC5446-040
Cometic Chrysler Gen-2 Hemi .040in MLS Cylinder Head Gasket - 4.375in Bore Cometic Gasket CGSC5446-040
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Cometic Chrysler Gen-2 Hemi .040in MLS Cylinder Head Gasket - 4.375in Bore

CGSC5446-040
191070068707
Head Gaskets
3 Units In Stock - Ships Next Business Day
$ 107.27 $ 96.54
$ 96.54

SKU: C5446-040 | UPC: 191070068707

Cometic Chrysler Gen-2 Hemi .040in MLS Cylinder Head Gasket - 4.375in Bore for 1966-1971 Dodge Plymouth

Upgrade your 1966-1971 Dodge and Plymouth Gen-2 Hemi engine with the Cometic C5446-040 MLS cylinder head gasket featuring a 4.375in bore and 0.040in compressed thickness. This gasket delivers reliable sealing for high-output engines in models like Charger, Challenger, Coronet, Road Runner, GTX, and more. Engineered for aluminum heads on aluminum or cast iron blocks, it handles extreme pressures and temperatures without sealants.

Key Features

  • Multi-Layer Steel Construction: Multiple embossed stainless steel layers provide strength to rebound from distortion and resist corrosion in demanding conditions.
  • Viton Rubber Coating: Outer layers coated on both sides with heat-resistant Viton up to 482 F, ensuring durability across harsh sealing environments and surface finishes.
  • 0.040in Compressed Thickness: Precise operating thickness maintains optimal compression for high-performance builds without additional sealants.
  • 4.375in Bore Compatibility: Designed specifically for Gen-2 Hemi engines, accommodating 426 Hemi applications in classic Mopar muscle cars.
  • Shear Force Resistance: Withstands forces between dissimilar metals like aluminum heads and cast iron blocks for leak-free performance.

Product Notes

  • Requires clean, flat cylinder head and block surfaces for proper sealing.
  • Store in a dry environment to preserve Viton coating integrity.
  • Ships in protective packaging to prevent damage during transit.

Installation Notes

  • Professional installation recommended.
  • Torque head bolts to manufacturer specifications in sequence.
  • Compatible with stock or aftermarket Gen-2 Hemi cylinder heads. no additional hardware needed.

This Part Fits

Year Make Model Submodel
1966-1967 Plymouth Satellite Base
1970 Plymouth Superbird Base
1966-1970 Dodge Coronet Deluxe
1967-1970 Dodge Coronet R/T
1968-1970 Dodge Coronet Super Bee
1968-1969 Plymouth Barracuda Base
1971 Plymouth Barracuda Base
1971 Plymouth Barracuda Gran Coupe
1966-1967 Plymouth Belvedere Base
1969 Plymouth Belvedere Base
1969 Plymouth Belvedere Satellite
1966-1967 Plymouth Belvedere II Base
1970-1971 Plymouth Cuda Base
1966 Plymouth Fury Base
1967-1971 Plymouth GTX Base
1968-1971 Plymouth Road Runner Base
1970-1971 Dodge Challenger Base
1970-1971 Dodge Challenger R/T
1969-1971 Dodge Charger 500
1966-1971 Dodge Charger Base
1969 Dodge Charger Daytona
1967-1971 Dodge Charger R/T
1969 Dodge Charger SE
1971 Dodge Charger Special Edition
1971 Dodge Charger Super Bee
1966-1970 Dodge Coronet 440
1966-1970 Dodge Coronet 500
1966 Dodge Coronet Base
1970-1971 Dodge Coronet Base
1971 Dodge Coronet Brougham
1971 Dodge Coronet Crestwood
1971 Dodge Coronet Custom

Why Choose Cometic?

  • Trusted by racers and builders for proven sealing in high-horsepower Hemi engines.
  • MLS design handles extreme boost and compression ratios reliably.
  • Precision manufacturing ensures exact fit for Gen-2 Hemi bores and thicknesses.

Frequently Asked Questions

  • Q: Does this gasket fit 426 Gen-2 Hemi engines in 1966-1971 Mopar cars?
    A: Yes, C5446-040 matches 4.375in bore Gen-2 Hemi applications across Dodge Charger, Challenger, Coronet, Plymouth Road Runner, GTX, Barracuda, and listed models.
  • Q: What materials are used in this head gasket?
    A: Embossed stainless steel layers with Viton fluorocarbon rubber coating on outer layers and uncoated center shim for varied thickness options.
  • Q: Is sealant required during installation?
    A: No, MLS gaskets seal directly. clean surfaces thoroughly and torque to spec for best results.

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Protective box 10 x 10 x 1 inches
  • Weight: 0.80 lbs

Request For Information

Have questions about Cometic Chrysler Gen-2 Hemi .040in MLS Cylinder Head Gasket - 4.375in Bore? Fill out the form below and we'll get back to you by the next business day.
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