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Mr. Gasket Head Gasket - Copper

Fits 1957-1991 Chevrolet 283-350 Gen I Small Block. 4.140 Inch Bore

PART# 1052G

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Mr. Gasket Copper Head Gaskets are manufactured from dead soft solid copper that provides excellent stability and reduces cylinder bore distortion. They can be used with or without stainless steel o-rings. For supercharged, turbocharged, nitrous oxide and extreme compression ratios. For high performance street, drag race and oval track applications.


  • Manufactured from dead soft copper
  • .020" thick
  • Provides excellent sealing and durability
  • Conforms to and seals minor surface irregularities
  • For high performance street, drag race, oval track and turbocharged (extreme heat) applications


ApplicationSmall Block Chevy
BrandMr. Gasket
Compressed Thickness.020 inch
Compression RatioUp to 12:1
Emission Code5
EngineChevrolet Small Block Gen I
Gasket Bore4.140 inch
Gasket LineCopper
Product TypeHead Gasket
Quantity Per Pkg.1
WarrantyLimited 90 Day
Part Number1052G



This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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Warranty Information

Limited 90 Day: See Details


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