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Speedy Bill
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Radiator Caps

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Radiator Caps
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Radiator Caps

Top off your radiator with a new radiator cap from Speedway Motors! No matter if you're looking for fashion or function, we've got you covered with beautiful chrome, stainless and brass caps, as well as, stock steel caps. We carry radiator caps from the cooler leaders like AFCO, C&R Radiators and Mr Gasket, so you can rest easy knowing you're getting the best cap possible. No matter what pressure rating you need, you can be we'll have it in stock and ready to ship today!

T-Bucket, Radiator Caps

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Featured Products
  • Product Rating: 5.00 Stars
    $10.99
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    This unique hex style cap for radiators. Available in 15 lb. capacity. Brilliant chrome finish.

    • 2-3/8" O.D. of cap top
    • 2-1/4" I.D. of cap top
    • Will fit a standard radiator neck
    • Sealing surface (which sits inside the neck) is 1-1/2" O.D.
    • Cap sides are 7/16" tall

    Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles.

    Go to Product Page
  • Product Rating: 4.20 Stars
    $9.99
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    Pressure caps for radiators featuring 15-pound capacity. Chrome finish.

    • 2-3/8" O.D. of cap top
    • 2-1/4" I.D. of cap top
    • Will fit a standard radiator neck
    • Sealing surface (which sits inside the neck) is 1-1/2" O.D.
    • Cap sides are 7/16" tall

    Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles

    Go to Product Page
  • Product Rating: 5.00 Stars
    $9.99
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    Pressure caps for radiators featuring 7-pound capacity. Beautiful, smooth finish in chrome.

    • 2-3/8" O.D. of cap top
    • 2-1/4" I.D. of cap top
    • Will fit a standard radiator neck
    • Sealing surface (which sits inside the neck) is 1-1/2" O.D.
    • Cap sides are 7/16" tall

    Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles

    Go to Product Page
  • Product Rating: 3.50 Stars
    $28.99
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    How handy is this! The built-in calibrated thermometer on this chrome-plated 16 lb. radiator cap makes it easy to check your coolant temp - and to know when its safe to remove the cap. Fits radiators on most domestic vehicles.

    • Helps to prevent burn injuries
    • Integrated coolant reclamation valve works great with your coolant recovery system
    • Your radiator can reclaim coolant from your overflow bottle
    • Wide 30° to 270° F temperature range
    • Calibrated in centigrade and Fahrenheit
    • Color-coded temperature ranges
    • Chromed crown with a colored trim ring

    Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles

    Go to Product Page
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    $45.99
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    This sprocket radiator cap from OTB Gear is precision machined from high quality aluminum alloy and polished. This stylish designed cap is made in the USA.

    • Cast in aircraft grade aluminum
    • Polished to show quality standards
    • Dress off the top of your radiator
    • Made in the USA
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  • Product Rating: 2.70 Stars
    $10.99
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    This unique hex style cap for radiators is now available in 7 lb. capacity. Brilliant chrome finish.

    • 2-3/8" O.D. of cap top
    • 2-1/4" I.D. of cap top
    • Will fit a standard radiator neck
    • Sealing surface (which sits inside the neck) is 1-1/2" O.D.
    • Cap sides are 7/16" tall

    Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles

    Go to Product Page
  • No Reviews
    $45.99
    Quick View Details
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    This vintage style radiator cap from OTB Gear has a similar design to the 1940s Ford farm tractor. It is offered as a 2 part assembly to allow you to properly align it with your radiator.

    • A-356 Aircraft Grade Aluminum
    • 16 lbs. Pressure
    • Made in the USA
    Go to Product Page
  • Product Rating: 3.30 Stars
    $33.99
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    This 16 lb. radiator cap is made of billet aluminum and fully polished.

    Learn more about cooling systems, how to choose the proper pressure cap, and how they work by reading our tech article. Cooling System Principles.  

    Go to Product Page
Product Rating: 4.00 Stars
$29.99
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$12.99 $9.99
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$5.99 $3.99
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Product Rating: 3.50 Stars
$28.99
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$26.99 $19.99
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Product Rating: 5.00 Stars
$16.99
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Product Rating: 5.00 Stars
$22.99
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Product Rating: 5.00 Stars
$13.99
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Product Rating: 5.00 Stars
$29.99
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$26.99 $19.99
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$45.99
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$39.99
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$58.99 $48.99
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$45.99
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Product Rating: 3.40 Stars
$24.99
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Product Rating: 4.20 Stars
$9.99
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$45.99
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Product Rating: 5.00 Stars
$9.99
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Product Rating: 3.30 Stars
$33.99
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$13.99
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$14.99 $5.99
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Product Rating: 5.00 Stars
$22.99
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$29.99 $19.99
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$22.99
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$9.99 $7.99
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$10.99 $6.99
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Product Rating: 5.00 Stars
$12.99
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Product Rating: 2.70 Stars
$10.99
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$75.99 $49.99
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Product Rating: 5.00 Stars
$16.99
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