SKU: 38960237972

Mr. Gasket Ultra-Seal Header Gaskets - 5966

Sale price$47.93 Regular price$53.25
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

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Description

Mr. Gasket Ultra-Seal Header Gaskets - 5966Overview: Manufactured from high temperature steel core graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp

Overview:

Manufactured from high-temperature steel core/graphite faced exhaust material. Expanded steel core provides stability and maximum torque retention to eliminate gasket failure. Graphite facing provides excellent heat resistance and thermal conductivity to transfer heat away from the cylinder head. Conforms to and seals minor surface irregularities. High recovery material allows header or manifold flange to stay sealed if flange loses clamp-load. Can be trimmed if necessary for modified port applications. For original equipment replacement, high performance street, drag race and oval track use.

Features:

    Application:

    Year Make Model Submodel Engine Size
    2005 - 2008 Chevrolet Corvette
    2006 - 2009 Chevrolet Trailblazer 364/6 V8
    2006 - 2007 Cadillac CTS 364/6 V8
    2005 - 2006 Pontiac GTO
    2009 Pontiac G8 376/6.2 V8
    2008 - 2009 Saab 9-7x 364/6 V8
    2009 - 2010 Chevrolet Corvette 376/6.2 V8
    2009 - 2010 Chevrolet Corvette 427/7 V8
    2010 Chevrolet Camaro 376/6.2 V8

    Specs:

    Brand Mr. Gasket
    Collector Gaskets Included No
    Emission Code 5
    Engine GM Small Block Gen III/IV (LS Based)
    Gasket Line Ultra-Seal
    Material Ultra-seal
    Port Shape Round
    Port Size 1.92"
    Product Type Header Gaskets
    Thickness .062"
    Warning California Proposition 65
    Warranty Limited 90 Day Warranty
    Weight 0.38
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 38960237972

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    4.3 ★★★★★
    Based on 63 reviews
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    S
    Verified Purchase
    Scott A. Cain
    Omaha, US
    ★★★★★ 5
    Great product
    Style: 16 oz
    Worked as advertised. I would order again.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 29, 2026
    S
    Verified Purchase
    steven whitis
    Pawtucket, US
    ★★★★★ 5
    Fixes flats and old tires like a charm
    Style: 1 gal
    This stuff is awesome. If you have tractor tires, ATV tires, bike, tires, hell, any tires that hold air. This stuff is awesome. Awesome. Awesome. It does not work for highway vehicles, i.e. Cars and truck trucks. But anything else it’s great. Dollies, air compressors, wheelbarrows, the stuff is awesome dude.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 5, 2026
    T
    Verified Purchase
    Tim & Tammy
    Los Angeles, US
    ★★★★★ 5
    slime is and has always been amazing for bike tires and other small pneumatic tires
    Style: 1 gal
    this is a great value, I have been using slime in my tubes of my bikes and a small inflatable pneumatic tires for probably 30 years, and I can say slime has only improved, and it works fantastic, this is a very good way to save money, and it works great on goat heads and several other ways your tires can get punctured, I still always recommend carrying a small air compressor or pump, but for the price point you just cannot beat slime, every bike shop should always carry this.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 18, 2026
    J
    Verified Purchase
    John Quargnenti
    Waukegan, US
    ★★★★★ 3
    They need to find a better way to ship it
    Style: 1 gal
    What was left in the bottle worked great. However, the cap was off of the jug when I opened the package. Ididn't have enough for the other tires.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 19, 2026
    M
    Verified Purchase
    M. O. Novilla
    Los Angeles, US
    ★★★★★ 5
    TireJect Product Featured on Youtube Channel "sixtyfiveford" Works Fantastic!
    Size: 8oz MTB Tire Sealant Kit, Size: 8oz MTB Tire Sealant Kit
    I recently had an opportunity to work on an old Troy-Bilt Snow Blower with a Carlisle Stud Bias Tire - 4.80-8 4 that had a continual leak and would not hold pressure for more than a day. After investigation, I discovered that it "Champagne" sized bubbles coming from an area on the sidewall that I circled in yellow "China" marker. Because of the size of the tire, I decided to purchase the "TireJect Mountain Bike (MTB) Tire Sealant Kit because I didn't require a lot of material to seal the tire. The TireJect Mountain Bike (MTB) Tire Sealant Kit came with an single 8oz container and I used 4 of those 8oz's in this single tire. The TireJect material sealed up the area beautifully. After the sealant cured, I was able to pump up the tire to 15PSI and it has held it's pressure for more than a week now. You can see from the photos, that the sidewalls in that yellow circled area were actually cracked (probably due to the tire sitting flat for more than a year). I highly recommend this product over previous products I have used in the past (Slime).
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on October 3, 2025

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