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1955-1991 Mr Gasket Aluminum Header Gaskets GEN 1 283-400 w/1.45 Inch x 1.48 Inch Square Ports.

Item EK-40-878089-1
38 Reviews of Mr. Gasket
Our Price

$47.55

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      Product Information

      Features, Description, Q&A

      Features

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      • Withstands Intense Exhaust Heat
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      • Reusable Header, Exhaust Manifold, and Collector Flange Gaskets
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      • Resists Deterioration
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      • Manufactured From Dead Soft Aluminum Layers .125" Thick
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      • Easy Removal For Disassembly
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      • Conforms Easily To Surface Irregularities and Warped Flanges
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      • Compresses Down To 0.060" To Create A Tight Leak-Proof Seal
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      • Will Not Shrink, Deteriorate, Or Blow Out, Eliminating Gasket Leaks
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      • For High Performance Street, Drag Race, and Oval Track Use
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      • Fits Chevrolet 262-400 Gen I Small Block With 1.45 Inch X 1.48 Inch Square Ports For Model Years 1955 To 1991
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      Description

      Aluminum-Layered Header Gaskets. The Mr. Gasket 1955-1991 Mr Gasket Aluminum Header Gaskets GEN 1 283-400 with 1.45 Inch x 1.48 Inch Square Ports are designed to provide a durable, airtight seal for exhaust headers and manifolds. These gaskets eliminate leaks caused by warped or damaged flange surfaces, improving exhaust system performance and reliability. They are an essential upgrade for automotive enthusiasts seeking leak-free exhaust connections on high-performance engines.

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      Construction and Appearance. These gaskets are made from dead soft aluminum layers that are 0.125 inches thick, enabling excellent conformability to irregular flange surfaces. The flat finish provides a clean, durable sealing surface resistant to shrinkage or deterioration, ensuring long-term performance even under intense exhaust heat conditions.

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      Installation. The header gaskets are straightforward to install and remove, requiring no additional drilling or modifications. Their design allows for easy disassembly and reassembly during maintenance or upgrades.

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      Warranty. Backed by a manufacturer's limited 90-day warranty, providing confidence in product quality and performance.

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      Application. Specifically fits Chevrolet Gen I Small Block engines ranging from 262 to 400 cubic inches produced between 1955 and 1991, featuring 1.45 inch by 1.48 inch square ports.

      CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

      4.5

      Reviews of Mr. Gasket Classic Exhaust Products (38)

      Questions & Answers

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