Universal Caps
Circle Track Universal Caps at JJ Motorsports
Universal caps provide protection and finishing touches for bolt assemblies. These caps prevent wear and exposure to dirt or moisture for a polished result. Integrate them with other finishing accessories for a complete aesthetic update.
Shop trusted brands like Allstar Performance for reliable options and Joes Racing Products for durable designs. Explore related categories such as Bulk Fasteners for additional hardware or Finishing Accessories for custom finishes.
Top Circle Track Universal Caps
- Allstar Performance Filler Cap Silver with Weld-In Steel Bung Small – Bung and Cap Kit with 1.375 in OD, Weld-On Steel Bung, Aluminum Threaded Cap, Silver Anodized, Kit.
- Allstar Performance Filler Cap Polished with Bolt-In Alum Bung Small – Bung and Cap Kit with 1.375 in OD, Bolt-On Aluminum Bung, Aluminum Threaded Cap, Polished, Kit.
- Joes Filler Cap with Weld-In Bung Alum 2in ID Black – Bung and Cap Kit with 2.000 in OD, Weld-On Aluminum Bung, Aluminum Threaded Cap, Black Anodized, Kit.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Allstar Performance Filler Cap Silver with Weld-In Steel Bung Small ALL36161
ALLSTAR PERFORMANCE
$29.99Keep your fuel system sealed tight and looking sharp with the Allstar Performance Filler Cap Silver with Weld-In Steel Bung (ALL36161). This clean, reliable kit gives you a professional-grade solution for adding a filler neck to your fuel cell or tank,...ALL36161- SKU:
- ALL36161
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
- MFG Part #:
- ALL36161
$29.99 -
Allstar Performance Filler Cap Silver with Weld-In Alum Bung Small ALL36160
ALLSTAR PERFORMANCE
$29.99Keep your fuel system sealed tight and looking sharp with the Allstar Performance Filler Cap and Weld-In Bung Kit. Designed for serious racers and builders, this small bung-and-cap combo delivers a clean, professional finish that's built to last. Whether...ALL36160- SKU:
- ALL36160
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- MFG Part #:
- ALL36160
$29.99 -
Allstar Performance Filler Cap Polished with Bolt-In Alum Bung Small ALL36183
ALLSTAR PERFORMANCE
$63.99A quality filler cap and bung are essential for maintaining system integrity under pressure and vibration—especially in high-performance applications where reliability matters. This Allstar Performance kit delivers a clean, professional finish while...ALL36183- SKU:
- ALL36183
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
$63.99 -
Allstar Performance Filler Cap Red with Bolt-In Alum Bung Small ALL36182
ALLSTAR PERFORMANCE
$63.99A quality filler cap isn't just about sealing your reservoir—it's about preventing contamination, maintaining system integrity, and presenting a finished look in your engine bay. The Allstar Performance filler cap delivers reliable bolt-on installation...ALL36182- SKU:
- ALL36182
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
$63.99 -
Allstar Performance Filler Cap Black with Bolt-In Alum Bung Small ALL36181
ALLSTAR PERFORMANCE
$63.99A proper filler cap and bung assembly is essential for maintaining system integrity under pressure and preventing fluid loss during competition or high-performance driving. This Allstar Performance kit delivers a straightforward, bolt-on solution with...ALL36181- SKU:
- ALL36181
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
$63.99 -
Allstar Performance Filler Cap Polished with Weld-In Steel Bung Large ALL36177
ALLSTAR PERFORMANCE
$96.99A quality filler cap and bung assembly is essential for any serious racing or custom build project—it keeps your fluids secure while presenting a clean, finished look under the hood. This Allstar Performance kit combines a durable weld-in steel bung with...ALL36177- SKU:
- ALL36177
- Availability:
- Ships Same Business Day
- Weight:
- 0.99 LBS
$96.99Qty in Cart: 0Quantity:Price:$96.99Subtotal: -
Allstar Performance Filler Cap Red with Weld-In Steel Bung Large ALL36176
ALLSTAR PERFORMANCE
$96.99A quality filler cap and bung assembly is essential for maintaining system integrity in custom fabrication and racing applications. This Allstar Performance kit combines a robust steel weld-on bung with a precision-threaded aluminum cap, giving you a...ALL36176- SKU:
- ALL36176
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
$96.99 -
Allstar Performance Filler Cap Black with Weld-In Steel Bung Large ALL36175
ALLSTAR PERFORMANCE
$96.99A quality filler cap and bung system is essential for maintaining proper fluid containment and preventing contamination in high-performance applications. This Allstar Performance kit delivers a robust, weld-in solution that eliminates loose or unreliable...ALL36175- SKU:
- ALL36175
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
$96.99 -
Allstar Performance Filler Cap Black with Weld-In Alum Bung Large ALL36171
ALLSTAR PERFORMANCE
$96.99A quality filler cap and bung assembly is essential for maintaining system integrity under high-performance conditions—whether you're managing coolant, fuel, or custom fluid systems. This Allstar Performance kit combines a durable aluminum bung with a...ALL36171- SKU:
- ALL36171
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
$96.99 -
Allstar Performance Filler Cap Polished with Weld-In Steel Bung Small ALL36169
ALLSTAR PERFORMANCE
$34.99A quality filler cap and bung assembly is essential for maintaining system integrity in high-performance applications where vibration, heat cycles, and pressure fluctuations are constant. This Allstar Performance kit provides a secure, leak-free seal...ALL36169- SKU:
- ALL36169
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
$34.99 -
Allstar Performance Filler Cap Red with Weld-In Steel Bung Small ALL36168
ALLSTAR PERFORMANCE
$34.99A reliable filler cap system is essential for maintaining proper fluid levels and preventing contamination in high-performance applications. This Allstar Performance kit combines a steel weld-in bung with a precision-threaded aluminum cap, giving you a...ALL36168- SKU:
- ALL36168
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
$34.99 -
Allstar Performance Filler Cap Black with Weld-In Steel Bung Small ALL36167
ALLSTAR PERFORMANCE
$34.99A reliable filler cap and bung assembly is essential for any custom fuel, coolant, or overflow system—whether you're building a dedicated race car or fabricating a clean engine bay. The Allstar Performance weld-in design offers permanent, leak-free...ALL36167- SKU:
- ALL36167
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
$34.99 -
Allstar Performance Filler Cap Polished with Weld-In Alum Bung Small ALL36166
ALLSTAR PERFORMANCE
$34.99A sealed fuel system demands precision components that can withstand vibration, pressure, and repeated use on the track or street. This Allstar Performance filler cap and bung kit delivers a clean, reliable solution for custom fuel tank applications...ALL36166- SKU:
- ALL36166
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
$34.99 -
Allstar Performance Filler Cap Red with Weld-In Alum Bung Small ALL36165
ALLSTAR PERFORMANCE
$34.99Custom fabrication demands precision components that won't compromise your build quality. This weld-in filler cap and bung kit delivers a permanent, clean solution for fuel, coolant, or overflow tank applications—eliminating the risk of leaks that could...ALL36165- SKU:
- ALL36165
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
$34.99 -
Allstar Performance Filler Cap Black with Weld-In Alum Bung Small ALL36164
ALLSTAR PERFORMANCE
$34.99A quality filler cap and bung system is essential for any custom tank or reservoir build—it prevents fluid spillage, keeps contaminants out, and looks purposeful on the car. The Allstar Performance weld-in design offers a permanent, leak-free solution...ALL36164- SKU:
- ALL36164
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
$34.99 -
Joes Filler Cap with Weld-In Bung Alum 2in ID Black 37402
JOES RACING PRODUCTS
$52.95Custom fuel systems, coolant loops, and reservoir builds demand a reliable, leak-proof filler solution—this weld-in bung and cap kit delivers exactly that. The aluminum construction provides corrosion resistance and weight savings, while the threaded cap...JOE37402- SKU:
- JOE37402
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MFG Part #:
- 37402
$52.95 -
Allstar Performance Filler Cap Silver with Bolt-In Alum Bung Small ALL36180
ALLSTAR PERFORMANCE
$57.99Keep your fuel system sealed tight and looking sharp with the Allstar Performance Filler Cap and Bolt-In Aluminum Bung Kit. This small but mighty combo delivers a clean, professional finish that's built to handle the demands of racing and...ALL36180- SKU:
- ALL36180
- Availability:
- Ships Same Business Day
- Weight:
- 0.43 LBS
- MFG Part #:
- ALL36180
$57.99 -
Allstar Performance Filler Cap Silver with Weld-In Steel Bung Large ALL36174
ALLSTAR PERFORMANCE
$96.99Keep your fuel system sealed tight and looking sharp with the Allstar Performance Filler Cap and Weld-In Steel Bung Kit. This large-format combo gives you a rock-solid, leak-free solution that's built for serious racing applications. Whether you're...ALL36174- SKU:
- ALL36174
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- MFG Part #:
- ALL36174
$96.99 -
Allstar Performance Filler Cap Silver with Weld-In Alum Bung ALL36170
ALLSTAR PERFORMANCE
$96.99Keep your fuel system sealed tight and looking sharp with the Allstar Performance Filler Cap and Weld-In Aluminum Bung Kit. Designed for racers and builders who demand both function and style, this silver anodized combo delivers a clean, professional...ALL36170- SKU:
- ALL36170
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- MFG Part #:
- ALL36170
$96.99 -
Allstar Performance Filler Cap Polished with Weld-In Alum Bung Large ALL36173
ALLSTAR PERFORMANCE
$96.99A quality filler cap and bung assembly is essential for any custom fuel system, coolant circuit, or overflow tank—it ensures a sealed, professional finish while preventing fluid loss and contamination. The Allstar Performance weld-in bung provides a...ALL36173- SKU:
- ALL36173
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
$96.99Qty in Cart: 0Quantity:Price:$96.99Subtotal:
