Cap and Plug Fittings
Circle Track Cap and Plug Fittings at JJ Motorsports
Cap and plug fittings are essential when sealing lines or unused ports to prevent leaks and maintain pressure. These durable plugs safeguard your fluid systems during storage or between races. Integrate them with other high-quality fluid line components for a dependable racing setup.
Shop trusted brands like Allstar Performance for plastic kits and Fragola for high-flow options. Explore related categories such as Circle Track Fittings and Plugs for complete fluid system solutions or Circle Track Hoses for matching lines.
Top Circle Track Cap and Plug Fittings
- Rear End Quick Change Fitting for Filler Tank – Aluminum, Black – Upgrade your quick change rear end setup with this fitting, designed for seamless connection to a filler tank. Made from lightweight aluminum and anodized in black, this fitting replaces the side bell inspection plug.
- Allstar Performance Plastic Plug Kit ALL50810 – AN Dust Plug 3 AN-16 AN Plastic Red Kit.
- Allstar Performance Plastic Cap Kit ALL50800 – AN Dust Cap 3 AN-16 AN Plastic Red 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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Holley Fuel Inlet Plug 26-76
HOLLEY
$21.53The Holley Fuel Inlet Plug 26-76 is an essential replacement or upgrade component for any Holley carburetor fuel bowl assembly. A properly sealed fuel inlet prevents leaks, fuel starvation, and contamination—critical concerns whether you're running a...HLY26-76- SKU:
- HLY26-76
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 26-76
$21.53 -
Fragola 3/4 MPT Hex Pipe Plug Black 493306-BL
FRAGOLA
$9.49Port sealing is non-negotiable in high-performance fuel and fluid systems, and this Fragola hex pipe plug delivers reliable, leak-free closure with minimal fuss. The aluminum construction resists corrosion while the hex head design allows quick...FRG493306-BL- SKU:
- FRG493306-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MFG Part #:
- 493306-BL
$9.49 -
Fragola 1/2 MPT Hex Pipe Plug Black 493304-BL
FRAGOLA
$7.49When you're running a precision fuel system or custom coolant circuit, port integrity matters. The Fragola 1/2 MPT Hex Pipe Plug provides a clean, secure way to cap off unused NPT ports without compromising system pressure or reliability. Its black...FRG493304-BL- SKU:
- FRG493304-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- 493304-BL
$7.49 -
Fragola 3/8 MPT Hex Pipe Plug Black 493303-BL
FRAGOLA
$5.49Fragola's 3/8 MPT hex pipe plug delivers reliable port closure for your fuel, coolant, and hydraulic systems. Built from aluminum and finished in durable black anodize, this fitting resists corrosion while maintaining a clean, professional appearance in...FRG493303-BL- SKU:
- FRG493303-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 493303-BL
$5.49 -
Fragola 3/8 MPT Hex Pipe Plug 493303
FRAGOLA
$4.99When you're building a custom cooling system, fuel line setup, or hydraulic circuit, you need fittings that seal reliably without unnecessary bulk. The Fragola 3/8 MPT Hex Pipe Plug delivers a clean, leak-free termination point with a compact hex head...FRG493303- SKU:
- FRG493303
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 493303
$4.99 -
Fragola 1/4 MPT Hex Pipe Plug 493302
FRAGOLA
$3.99When you're building a high-performance fuel, coolant, or brake system, every connection point matters. This Fragola hex pipe plug seals 1/4 NPT ports with precision-engineered reliability, eliminating leaks that can compromise your setup. The...FRG493302- SKU:
- FRG493302
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 493302
$3.99 -
Fragola 1/8 MPT Hex Pipe Plug Black 493301-BL
FRAGOLA
$3.99Clean up your fuel system, coolant lines, or custom plumbing with a reliable port closure that won't leak or corrode. Fragola's hex pipe plugs are CNC-precision engineered and anodized for durability in high-heat environments. Whether you're sealing...FRG493301-BL- SKU:
- FRG493301-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- 493301-BL
$3.99 -
Fragola 3/4 MPT Allen Pipe Plug Black 493206-BL
FRAGOLA
$7.49When you're building or servicing a high-performance fuel system, coolant loop, or pneumatic circuit, you need fittings that seal reliably and won't corrode under pressure. This Fragola 3/4 MPT Allen Pipe Plug delivers the precision fit and durability...FRG493206-BL- SKU:
- FRG493206-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 493206-BL
$7.49 -
Fragola 3/4 MPT Allen Pipe Plug 493206
FRAGOLA
$4.99When you're building or modifying a high-performance fuel system, cooling circuit, or hydraulic line, you need fittings you can trust to seal reliably under pressure. The Fragola 3/4 MPT Allen Pipe Plug delivers precision engineering in a compact...FRG493206- SKU:
- FRG493206
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 493206
$4.99 -
Fragola 1/2 MPT Allen Pipe Black 493205-BL
FRAGOLA
$4.99A quality pipe plug is essential for protecting open ports in your fuel, coolant, or pneumatic systems from contamination and fluid loss. The Fragola 1/2 MPT Allen Pipe combines reliable sealing performance with a clean, recessed allen head design that...FRG493205-BL- SKU:
- FRG493205-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 493205-BL
$4.99 -
Fragola 1/2 MPT Allen Pipe 493205
FRAGOLA
$3.99Secure your fuel, oil, or coolant line connections with a plug that delivers reliability under pressure. The Fragola 1/2 MPT Allen Pipe combines precision-engineered aluminum construction with a tamper-proof allen head design, giving you a clean,...FRG493205- SKU:
- FRG493205
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 493205
$3.99 -
Fragola 3/8 MPT Allen Pipe Plug Black 493204-BL
FRAGOLA
$4.49When you're building a high-performance fuel system, cooling loop, or pneumatic setup, you need fittings that won't leak under pressure and won't compromise your design. The Fragola 3/8 MPT Allen Pipe Plug offers a clean, reliable way to cap off unused...FRG493204-BL- SKU:
- FRG493204-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 493204-BL
$4.49 -
Fragola 3/8 MPT Allen Pipe Plug 493204
FRAGOLA
$3.49When you're building or modifying a fuel, oil, or coolant system, you need fittings you can trust to seal reliably under pressure. This Fragola pipe plug delivers the precision engineering and corrosion resistance required for high-performance...FRG493204- SKU:
- FRG493204
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 493204
$3.49 -
Fragola 1/4 MPT Allen Pipe Plug Black 493203-BL
FRAGOLA
$2.99When you're building or servicing a high-performance fuel system, cooling circuit, or pneumatic setup, you need reliable fittings that won't leak under pressure. This Fragola 1/4 MPT Allen Pipe Plug delivers the precision engineering and durability...FRG493203-BL- SKU:
- FRG493203-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- 493203-BL
$2.99 -
Fragola 1/4 MPT Allen Pipe Plug 493203
FRAGOLA
$2.49A quality pipe plug is essential for safely sealing unused port connections in your fuel system, coolant lines, or custom fabrications. The Fragola 1/4 MPT Allen Pipe Plug delivers reliable sealing with a compact design that won't interfere with tight...FRG493203- SKU:
- FRG493203
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 493203
$2.49 -
Fragola 1/8 MPT Allen Pipe Plug Black 493202-BL
FRAGOLA
$3.49When you're building a high-performance fuel system, cooling circuit, or pneumatic setup, precision fittings are non-negotiable. This Fragola allen pipe plug seals off 1/8 NPT ports with reliability and a clean aesthetic that belongs on any serious build...FRG493202-BL- SKU:
- FRG493202-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- 493202-BL
$3.49 -
Fragola 1/8 MPT Allen Pipe Plug 493202
FRAGOLA
$2.49When you're building or maintaining a high-performance fuel system, cooling circuit, or hydraulic line, you need fittings you can trust to seal reliably under pressure. The Fragola 1/8 MPT Allen Pipe Plug provides a clean, secure solution for capping off...FRG493202- SKU:
- FRG493202
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- 493202
$2.49 -
Fragola 1/16 MPT Allen Pipe Plug Black 493201-BL
FRAGOLA
$3.99When you're building a high-performance fuel system or hydraulic circuit, every connection point matters—leaks and pressure loss will compromise your setup instantly. The Fragola 1/16 MPT Allen Pipe Plug delivers a clean, reliable seal with the...FRG493201-BL- SKU:
- FRG493201-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- 493201-BL
$3.99 -
Fragola #20 Flare Cap Black 492920-BL
FRAGOLA
$18.99A properly sealed hydraulic or fuel line system is non-negotiable in high-performance racing. The Fragola #20 Flare Cap Black provides a secure, corrosion-resistant closure for 20 AN fittings, protecting your lines from contamination and fluid loss...FRG492920-BL- SKU:
- FRG492920-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- 492920-BL
$18.99 -
Fragola #16 Flare Cap Black 492916-BL
FRAGOLA
$13.99A proper cap fitting is essential for protecting your AN line system from contamination and preventing fluid loss at critical connection points. Whether you're running a high-pressure fuel system, coolant loop, or brake circuit, the Fragola #16 Flare Cap...FRG492916-BL- SKU:
- FRG492916-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MFG Part #:
- 492916-BL
$13.99
