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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Fragola #6 Port Plug 9/16-18 481406
FRAGOLA
$3.99A quality port plug is essential for any high-performance fuel system or custom hydraulic setup—it seals unused AN ports while maintaining system integrity under pressure. This Fragola #6 plug delivers the reliability you need with a robust hex head...FRG481406- SKU:
- FRG481406
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MFG Part #:
- 481406
$3.99 -
Fragola #4 Port Plug 7/16-20 Black 481404-BL
FRAGOLA
$3.99If you're building a high-performance fuel system, cooling circuit, or fluid transfer application, you need fittings that won't leak under pressure. The Fragola #4 Port Plug delivers a reliable, precision-engineered seal with a robust hex head design...FRG481404-BL- SKU:
- FRG481404-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.52 LBS
- MFG Part #:
- 481404-BL
$3.99 -
Fragola #12 Port Plug w/ Socket Hex 481312-BL
FRAGOLA
$13.99When you're running high-pressure fluid systems, port integrity is non-negotiable. This Fragola #12 port plug seals unused -12 AN ports with precision-engineered reliability, eliminating leaks and maintaining system pressure where it matters most...FRG481312-BL- SKU:
- FRG481312-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 481312-BL
$13.99Qty in Cart: 0Quantity:Price:$13.99Subtotal: -
Fragola #10 Port Plug w/ Socket Hex 481310-BL
FRAGOLA
$9.49Fluid system reliability depends on secure, leak-free connections at every junction. The Fragola #10 Port Plug with Socket Hex delivers precisely that—a robust aluminum fitting engineered to seal port openings in high-pressure applications without...FRG481310-BL- SKU:
- FRG481310-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 481310-BL
$9.49 -
Fragola #12 AN Plug Black 480612-BL
FRAGOLA
$8.49Proper AN line termination is critical for fuel, coolant, and brake system integrity—a quality plug prevents leaks and maintains system pressure under demanding track conditions. The Fragola #12 AN Plug delivers reliable sealing with a hex head design...FRG480612-BL- SKU:
- FRG480612-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- MFG Part #:
- 480612-BL
$8.49 -
Fragola #12 AN Plug 480612
FRAGOLA
$7.39Fragola's #12 AN plugs are essential for sealing off unused ports in your fuel, coolant, and oil system lines without compromising flow integrity in active circuits. The hex head design ensures secure installation and removal with standard wrenches,...FRG480612- SKU:
- FRG480612
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MFG Part #:
- 480612
$7.39 -
Fragola #10 AN Plug Black 480610-BL
FRAGOLA
$5.49A reliable hydraulic or fuel system demands leak-free connections, and this #10 AN plug delivers exactly that. Whether you're sealing off unused ports during a custom fuel system build or replacing a damaged fitting, the black anodized aluminum...FRG480610-BL- SKU:
- FRG480610-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- 480610-BL
$5.49 -
Fragola #10 AN Plug 480610
FRAGOLA
$5.49If you're running a high-performance fuel, oil, or coolant system, you need reliable fittings that won't leak under pressure. The Fragola #10 AN Plug is a precision-engineered solution designed to seal off unused AN ports on your manifold or distribution...FRG480610- SKU:
- FRG480610
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MFG Part #:
- 480610
$5.49Qty in Cart: 0Quantity:Price:$5.49Subtotal: -
Fragola #8 AN Plug Black 480608-BL
FRAGOLA
$4.49Fragola's #8 AN plugs deliver reliable system sealing for high-pressure fuel, oil, and coolant lines in racing and performance applications. When you're running forced induction or modified fuel systems, proper port sealing prevents leaks that compromise...FRG480608-BL- SKU:
- FRG480608-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 480608-BL
$4.49 -
Fragola #8 AN Plug 480608
FRAGOLA
$4.49If you're running a custom fuel, oil, or coolant system, you need reliable fittings that won't leak under pressure. The Fragola #8 AN Plug provides a clean, professional way to cap off unused AN ports—whether you're finalizing a fuel line circuit or...FRG480608- SKU:
- FRG480608
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MFG Part #:
- 480608
$4.49 -
Fragola #6 AN Plug Black 480606-BL
FRAGOLA
$2.49A quality AN plug is essential for any high-performance fuel system or hydraulic line setup where you need a reliable, leak-free termination point. This Fragola #6 AN plug delivers the precision fitment and durability you expect from a trusted...FRG480606-BL- SKU:
- FRG480606-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 480606-BL
$2.49 -
Fragola #6 AN Plug 480606
FRAGOLA
$2.49When you're running a fuel system, oil circuit, or coolant line, you need fittings that won't leak under pressure. The Fragola #6 AN Plug delivers the reliability and straightforward installation that racers and serious enthusiasts demand—just screw it...FRG480606- SKU:
- FRG480606
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MFG Part #:
- 480606
$2.49 -
Fragola #4 AN Plug Black 480604-BL
FRAGOLA
$2.49A quality AN plug is essential for any high-performance fuel system, hydraulic line, or custom fluid circuit where reliability matters. The Fragola #4 AN Plug delivers the precision fitment and durability required to prevent leaks under pressure, whether...FRG480604-BL- SKU:
- FRG480604-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 480604-BL
$2.49 -
Fragola #4 AN Plug 480604
FRAGOLA
$2.49Proper hydraulic and fuel system connections are critical to reliable performance—a failed fitting under high pressure can compromise your entire race day. The Fragola #4 AN Plug delivers precision engineering with a secure hex head design that prevents...FRG480604- SKU:
- FRG480604
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MFG Part #:
- 480604
$2.49 -
Fragola #3 AN Plug Black 480603-BL
FRAGOLA
$2.49Fluid line systems demand reliable, leak-free connections—and this Fragola #3 AN plug delivers exactly that with precision-engineered construction and proven durability. Whether you're running fuel, oil, or coolant lines on your race rig or street...FRG480603-BL- SKU:
- FRG480603-BL
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 480603-BL
$2.49 -
Fragola #3 AN Plug 480603
FRAGOLA
$2.49If you're building or maintaining a high-performance fuel, oil, or coolant system, you need reliable fittings that won't leak under pressure. The Fragola #3 AN Plug delivers the dependability and precision fit that professional racers and serious...FRG480603- SKU:
- FRG480603
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MFG Part #:
- 480603
$2.49 -
Earls 1/2in Pipe Plug Ano-Tuff AT993205ERL
EARLS
$8.95Fluid system plumbing requires reliable, corrosion-resistant fittings that won't compromise flow or durability. The Earls 1/2in Pipe Plug delivers a precision-engineered solution for sealing NPT ports in custom cooling, fuel, and oil lines. Its black...EARAT993205ERL- SKU:
- EARAT993205ERL
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- AT993205ERL
$8.95 -
Earls Cap Plug 12an (1pk) AT992912ERL
EARLS
$17.90A quality cap plug is essential for a clean, leak-free hydraulic or fuel system. This 12AN fitting from Earls seals unused ports while maintaining system integrity under pressure, preventing contamination and fluid loss. The black anodized aluminum...EARAT992912ERL- SKU:
- EARAT992912ERL
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MFG Part #:
- AT992912ERL
$17.90 -
Earls Cap Plug 10an (1pk) AT992910ERL
EARLS
$14.88When routing high-flow fuel, coolant, or hydraulic lines through your engine bay, open AN fittings are a liability—they invite contamination, leaks, and pressure loss. This Earls cap plug seals 10 AN ports with precision-engineered reliability, keeping...EARAT992910ERL- SKU:
- EARAT992910ERL
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- AT992910ERL
$14.88 -
Earls Cap Plug 8an (1pk) AT992908ERL
EARLS
$11.93A quality cap plug is essential for any high-performance fuel system or cooling line setup—it seals unused AN ports and prevents fluid leakage, contamination, and air introduction into your system. This Earls 8AN cap plug delivers reliable sealing with a...EARAT992908ERL- SKU:
- EARAT992908ERL
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- AT992908ERL
$11.93Qty in Cart: 0Quantity:Price:$11.93Subtotal:
