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1968 Mercury Cougar
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    Product Details

    Percy's High Performance Parts and Accessories

    Mercury Cougar 1968, Seal-4-Good™ Exhaust Header Gaskets by Percy's High Performance®. The Percy's Seal-4-Good Reusable Flange Gaskets are multi-layered and made from a special "Dead Soft" Aluminum, which conforms to header flanges for the ultimate seal. Since the Seal-4-Good is made from multiple layers of dead soft metal, it easily conforms to small imperfections that a copper gasket simply can not. Due to this construction, these gaskets will not blow out or burn out when properly installed. These extreme high-temperature gaskets are well-suited for highly-modified engines: turbocharged, supercharged, nitrous or fuel. This is a premium, high-performance gasket at an affordable price.

    Percy High Performance

    Specifications:

    Series: Seal-4-Good™

    Features:

    • Malleable stainless steel metal core
    • Will survive 2000°F exhaust temperatures for extended periods
    • Carbon felt material on a stainless steel core
    • Graphite composition sealing material for high heat applications
    • Malleable core conforms to gasket flange for leak-free sealing
    • Easily port-matched to modified heads
    • Seals even imperfect flanges
    • Made in U.S.A.

    The extremely high exhaust temps modified engines produce make it tough for a conventional gasket to survive. XX Carbon gaskets are made of 100% carbon-felt material embossed on a steel core; there's nothing to burn out. This material withstands long term exposure to over 2000°F; this makes for a long-life gasket! The XX Carbon line of gaskets offers superior sealing ability even on the worst flange surfaces.

    Percy High Performance® was founded by racers to deliver quality, affordable, and innovative products for racers. From a wide array of gaskets to wheel and tire fitment tools, tire pressure equalizers, temperature indicators, gas temperature probes, jet extensions, bung and plug kits, and more, Percy’s develops unique, problem-solving products for the racing and high performance automotive aftermarket. Percy’s is a proud “Made in the USA” manufacturer that vows to satisfy all customer questions or concerns. Make Percy’s a part of your racing repertoire, then get used to parking in Victory Lane!

    Warranty Information

    Percy High Performance® products are covered by a Limited Lifetime Warranty, during which its products are warranted to be free from defects in material or workmanship. This Warranty does not apply to any products that have been subjected to misuse, mishandling, misapplication, neglect (including but not limited to improper maintenance), improper installation, or alterations.

    The Warranty is granted to the end-user and applies to products which are purchased, installed, and used for the purposes for which they are originally designed. This Warranty covers defects arising under normal use and does not cover malfunctions or failures resulting from misuse, abuse, neglect, improper installation, or incorrect maintenance.

    During the Warranty period, Percy High Performance will repair or replace, at no charge, a product that is defective in materials or workmanship. Percy High Performance reserves the right to either repair or replace a defective component at its discretion and reserves the right to substitute an equivalent product under the terms of this Warranty.

    Magnuson-Moss Warranty Act:
    Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More
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