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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Allstar Performance `-4 Aluminum Caps 20pk ALL50822
ALLSTAR PERFORMANCE
$6.29Protecting your AN fittings from contamination and moisture is essential for maintaining system integrity in high-performance applications. These aluminum caps seal off unused -4 AN ports, preventing debris ingress that could compromise fuel delivery,...ALL50822- SKU:
- ALL50822
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- ALL50822
$6.29 -
Allstar Performance `-3 Aluminum Caps 20pk ALL50821
ALLSTAR PERFORMANCE
$11.39Protect your -3 AN fittings from contamination and moisture with these durable aluminum dust caps. A clean fuel, coolant, or brake system starts with proper sealing—these caps prevent debris from entering your lines during storage, assembly, or between...ALL50821- SKU:
- ALL50821
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- ALL50821
$11.39 -
Allstar Performance `-20 Plastic Plug 5pk ALL50818
ALLSTAR PERFORMANCE
$9.49Protect your -20 AN fittings from contamination and moisture when lines are disconnected or stored. These durable plastic plugs are essential maintenance items for any serious racing or performance shop, preventing debris infiltration that can compromise...ALL50818- SKU:
- ALL50818
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MFG Part #:
- ALL50818
$9.49 -
Allstar Performance `-16 Plastic Plugs 10pk ALL50817
ALLSTAR PERFORMANCE
$5.29-16 Plastic Plugs 10pk AN Dust Plug16 ANPlasticRedSet of 10ALL50817- SKU:
- ALL50817
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MFG Part #:
- ALL50817
$5.29 -
Allstar Performance `-12 Plastic Plugs 10pk ALL50816
ALLSTAR PERFORMANCE
$5.29Keep your AN fittings clean, protected, and race-ready with the Allstar Performance -12 AN Plastic Dust Plugs. These bright red plugs are a simple yet essential tool for any serious builder or racer looking to prevent dirt, debris, and moisture from...ALL50816- SKU:
- ALL50816
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- MFG Part #:
- ALL50816
$5.29 -
Allstar Performance `-10 Plastic Plugs 10pk ALL50815
ALLSTAR PERFORMANCE
$4.89Protecting your AN fittings from contamination is non-negotiable in high-performance racing systems. These durable plastic plugs prevent dirt, moisture, and debris from compromising your fuel, oil, or coolant lines during assembly, storage, or transport...ALL50815- SKU:
- ALL50815
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- MFG Part #:
- ALL50815
$4.89 -
Allstar Performance `-8 Plastic Plugs 20pk ALL50814
ALLSTAR PERFORMANCE
$6.29Protect your AN fittings from contamination and debris with these reliable dust plugs—essential for maintaining system integrity during storage, transport, or maintenance work. Proper sealing prevents oxidation and keeps unwanted particles out of your...ALL50814- SKU:
- ALL50814
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MFG Part #:
- ALL50814
$6.29 -
Allstar Performance `-6 Plastic Plugs 20pk ALL50813
ALLSTAR PERFORMANCE
$5.99Keep contamination out of your AN fittings and fuel system lines with these reliable plastic dust plugs. Whether you're assembling a fuel system from scratch or protecting components during storage and transport, these caps seal out dirt, moisture, and...ALL50813- SKU:
- ALL50813
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- MFG Part #:
- ALL50813
$5.99 -
Allstar Performance `-4 Plastic Plugs 20pk ALL50812
ALLSTAR PERFORMANCE
$4.89Protecting your AN fittings from contamination is non-negotiable in a performance fuel system or hydraulic setup. These Allstar plastic plugs prevent dirt, moisture, and debris from entering open -4 AN ports during assembly, storage, or system...ALL50812- SKU:
- ALL50812
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- ALL50812
$4.89Qty in Cart: 0Quantity:Price:$4.89Subtotal: -
Allstar Performance `-3 Plastic Plugs 20pk ALL50811
ALLSTAR PERFORMANCE
$4.89AN fittings demand proper protection from contamination, moisture, and debris—especially in high-performance engine bays where fluid cleanliness directly impacts reliability. These Allstar plastic plugs seal your unused AN ports during assembly, storage,...ALL50811- SKU:
- ALL50811
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- ALL50811
$4.89 -
Allstar Performance `-20 Plastic Cap 5pk ALL50808
ALLSTAR PERFORMANCE
$8.29Protect your AN fittings from contamination and fluid loss with these essential dust caps. Whether you're running a street machine or a race car, exposed AN ports invite dirt, moisture, and debris that compromise system integrity and performance. Keep...ALL50808- SKU:
- ALL50808
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MFG Part #:
- ALL50808
$8.29 -
Allstar Performance `-16 Plastic Caps 10pk ALL50807
ALLSTAR PERFORMANCE
$6.29Protect your AN fittings from contamination and oxidation with these durable plastic caps. Loose dust and debris can compromise seal integrity and create costly leaks during assembly or storage. Keep your high-performance fuel, coolant, and brake systems...ALL50807- SKU:
- ALL50807
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MFG Part #:
- ALL50807
$6.29 -
Allstar Performance `-12 Plastic Caps 10pk ALL50806
ALLSTAR PERFORMANCE
$4.89Protect your AN fittings from contamination and corrosion with these essential dust caps. Whether you're storing a race engine or maintaining a high-performance fuel system, these caps seal your -12 AN ports during storage, shipping, and between service...ALL50806- SKU:
- ALL50806
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- MFG Part #:
- ALL50806
$4.89 -
Allstar Performance `-10 Plastic Caps 10pk ALL50805
ALLSTAR PERFORMANCE
$4.29Protect your AN fittings from contamination and corrosion with these essential dust caps. Whether you're running a race engine, custom fuel system, or high-pressure hydraulic lines, exposed -10 AN ports invite debris, moisture, and oxidation that...ALL50805- SKU:
- ALL50805
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- ALL50805
$4.29 -
Allstar Performance `-8 Plastic Caps 20pk ALL50804
ALLSTAR PERFORMANCE
$5.69Protecting your AN fittings from contamination and moisture is non-negotiable in high-performance applications. These durable plastic caps seal off unused ports, preventing debris, water, and dirt from compromising your fuel, oil, and coolant systems. A...ALL50804- SKU:
- ALL50804
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- MFG Part #:
- ALL50804
$5.69 -
Allstar Performance `-6 Plastic Caps 20pk ALL50803
ALLSTAR PERFORMANCE
$5.29Protect your AN fittings from contamination and environmental damage with these durable plastic caps. Whether you're building a fuel system, coolant circuit, or brake line setup, keeping debris and moisture out of your -6 AN ports is essential for system...ALL50803- SKU:
- ALL50803
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- ALL50803
$5.29 -
Allstar Performance `-4 Plastic Caps 20pk ALL50802
ALLSTAR PERFORMANCE
$4.29Protect your AN fittings from contamination and oxidation with these durable plastic dust caps. Whether you're running a track car, street machine, or race engine, exposed hydraulic and fuel lines invite moisture, dirt, and corrosion—all enemies of...ALL50802- SKU:
- ALL50802
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- ALL50802
$4.29 -
Allstar Performance `-3 Plastic Caps 20pk ALL50801
ALLSTAR PERFORMANCE
$3.99Protecting your AN fittings from contamination is non-negotiable in high-performance applications—dirt, moisture, and debris can compromise hydraulic and fuel system integrity. These durable plastic caps keep your -3 AN ports sealed when not in use,...ALL50801- SKU:
- ALL50801
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- ALL50801
$3.99 -
Allstar Performance Steel Plugs 3/16in Inv Flare 4pk ALL50183
ALLSTAR PERFORMANCE
$4.69Inverted flare fittings demand precision connections, and these Allstar Performance steel plugs deliver the reliability your fuel and brake systems need. Whether you're sealing off unused ports during a system redesign or protecting critical junctions, a...ALL50183- SKU:
- ALL50183
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- ALL50183
$4.69 -
Allstar Performance 1/8 NPT Brass Plugs 4pk ALL50182
ALLSTAR PERFORMANCE
$4.59NPT port plugs are essential for sealing unused ports on engine blocks, cylinder heads, and fluid systems—preventing fluid leakage and contamination. Allstar's brass plugs deliver reliable performance in high-temperature and high-pressure environments,...ALL50182- SKU:
- ALL50182
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MFG Part #:
- ALL50182
$4.59
