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 End Caps Captured 3/16in 10pk ALL48036
ALLSTAR PERFORMANCE
$13.59Keep your brake and fuel line fittings sealed tight and protected with the Allstar Performance ALL48036 Captured End Caps. These solid brass compression end caps are a must-have for any serious builder looking for a clean, leak-free finish on unused line...ALL48036- SKU:
- ALL48036
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MFG Part #:
- ALL48036
$13.59 -
Allstar Performance 18mm x 1.50 Oxygen Sensor Plug Steel Zinc Oxide ALL34150
ALLSTAR PERFORMANCE
$8.79Keep your exhaust system sealed tight and your engine running at peak performance with the Allstar Performance 18mm x 1.50 Oxygen Sensor Plug (ALL34150). Built from tough steel with a corrosion-resistant zinc oxide finish, this plug is the reliable...ALL34150- SKU:
- ALL34150
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MFG Part #:
- ALL34150
$8.79 -
Aeroquip #4 An Cap Aluminum FCM3752
AEROQUIP
$5.29Keep your AN fittings protected and your build looking sharp with the Aeroquip #4 AN Cap in premium aluminum construction. These caps are the perfect solution for sealing off unused ports, preventing contamination, and adding a clean, finished look to...AERFCM3752- SKU:
- AERFCM3752
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- FCM3752
$5.29 -
Aeroquip #3 An Cap Aluminum FCM3751
AEROQUIP
$15.99Keep your AN fittings protected and your engine bay looking sharp with the Aeroquip FCM3751 #3 AN Cap. These precision-machined aluminum caps are a must-have for any serious build, sealing off unused ports while adding a clean, finished look under the...AERFCM3751- SKU:
- AERFCM3751
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- FCM3751
$15.99Qty in Cart: 0Quantity:Price:$15.99Subtotal: -
Aeroquip 3/4in Pipe Plug FCM3750
AEROQUIP
$17.99When you need a pipe plug that combines reliability with a clean, professional finish, the Aeroquip FCM3750 delivers every time. Built tough from aircraft-grade aluminum with a striking blue anodized finish, this 3/4in pipe plug is the go-to solution for...AERFCM3750- SKU:
- AERFCM3750
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- FCM3750
$17.99 -
Aeroquip 1/2in Pipe Plug FCM3749
AEROQUIP
$5.49When it comes to sealing your piping systems with confidence, the Aeroquip 1/2in Pipe Plug FCM3749 delivers a rock-solid, leak-free connection every time. Built from high-grade aluminum with a striking blue anodized finish, this plug is as tough as it is...AERFCM3749- SKU:
- AERFCM3749
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- FCM3749
$5.49 -
Aeroquip #16 An Cap Aluminum FCM3744
AEROQUIP
$21.99Keep your AN fittings protected and leak-free with the Aeroquip #16 AN Cap in premium aluminum construction. This sleek blue anodized cap is the perfect finishing touch for any performance build, sealing off unused ports with style and reliability...AERFCM3744- SKU:
- AERFCM3744
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- MFG Part #:
- FCM3744
$21.99 -
Aeroquip #12 An Cap Aluminum FCM3743
AEROQUIP
$18.99Keep your AN fittings protected and your build looking sharp with the Aeroquip #12 AN Cap in premium aluminum. This simple but essential piece guards open ports from dirt, debris, and damage while adding a clean, finished look to any performance build...AERFCM3743- SKU:
- AERFCM3743
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MFG Part #:
- FCM3743
$18.99Qty in Cart: 0Quantity:Price:$18.99Subtotal: -
Aeroquip #10 An Cap Aluminum FCM3742
AEROQUIP
$15.49Keep your AN fittings protected and looking sharp with the Aeroquip #10 AN Cap in premium aluminum construction. Designed for performance enthusiasts who demand both function and style, this blue anodized cap seals unused ports cleanly while adding a...AERFCM3742- SKU:
- AERFCM3742
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MFG Part #:
- FCM3742
$15.49 -
Aeroquip #8 An Cap Aluminum FCM3741
AEROQUIP
$7.29Keep your AN fittings protected and your engine bay looking sharp with the Aeroquip #8 AN Cap in striking blue anodized aluminum. Whether you're capping off unused ports or keeping contaminants out during a build, this is the clean, reliable solution...AERFCM3741- SKU:
- AERFCM3741
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- FCM3741
$7.29 -
Aeroquip #6 An Cap Aluminum FCM3740
AEROQUIP
$5.59Keep your AN fittings protected and looking sharp with the Aeroquip #6 AN Cap in Aluminum (FCM3740). This precision-crafted cap seals off unused ports to prevent contamination and fluid leaks, while that eye-catching blue anodized finish adds a clean,...AERFCM3740- SKU:
- AERFCM3740
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- FCM3740
$5.59 -
Aeroquip #10 O-Ring Boss Plug FCM3726
AEROQUIP
$11.99Keep your hydraulic and fuel systems sealed tight with the Aeroquip FCM3726 #10 O-Ring Boss Plug — a must-have for any serious build or repair. Machined from lightweight aluminum with a striking blue anodized finish, this plug delivers a leak-free seal...AERFCM3726- SKU:
- AERFCM3726
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- FCM3726
$11.99 -
Aeroquip #8 O-Ring Boss Plug FCM3725
AEROQUIP
$16.99Keep your fluid systems sealed tight and looking sharp with the Aeroquip #8 O-Ring Boss Plug (FCM3725) — a precision-engineered plug that delivers leak-free performance you can count on. Whether you're capping off unused ports or completing a clean...AERFCM3725- SKU:
- AERFCM3725
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- FCM3725
$16.99 -
Aeroquip #6 O-Ring Boss Plug FCM3724
AEROQUIP
$13.99Keep your fluid systems sealed tight and leak-free with the Aeroquip #6 O-Ring Boss Plug FCM3724 — a precision-engineered fitting built for performance enthusiasts who refuse to compromise. Its robust O-ring design and anodized aluminum construction...AERFCM3724- SKU:
- AERFCM3724
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- FCM3724
$13.99Qty in Cart: 0Quantity:Price:$13.99Subtotal: -
Aeroquip #4 O-Ring Boss Plug FCM3723
AEROQUIP
$9.19Keep your hydraulic and fluid systems sealed tight with the Aeroquip #4 O-Ring Boss Plug FCM3723 — a precision-crafted fitting plug built for reliability under pressure. The blue anodized aluminum construction not only looks sharp but stands up to...AERFCM3723- SKU:
- AERFCM3723
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- FCM3723
$9.19 -
Aeroquip #3 O-Ring Boss Plug FCM3722
AEROQUIP
$23.99Keep your hydraulic and fluid systems sealed tight with the Aeroquip #3 O-Ring Boss Plug FCM3722 — a precision-machined fitting designed to block unused ports cleanly and reliably. Built from lightweight aluminum with a striking blue anodized finish,...AERFCM3722- SKU:
- AERFCM3722
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- FCM3722
$23.99 -
Aeroquip #16 Alm Flare Plug FCM3718
AEROQUIP
$17.99Keep your fluid lines sealed and protected with the Aeroquip #16 Aluminum Flare Plug (FCM3718) — a trusted solution for capping unused AN fittings cleanly and securely. Built from lightweight aluminum with a striking blue anodized finish, this plug is as...AERFCM3718- SKU:
- AERFCM3718
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- MFG Part #:
- FCM3718
$17.99Qty in Cart: 0Quantity:Price:$17.99Subtotal: -
Aeroquip #12 Alm Flare Plug FCM3717
AEROQUIP
$18.49Keep your hydraulic and fuel systems sealed tight with the Aeroquip FCM3717 #12 Aluminum Flare Plug — a go-to solution for capping unused AN fittings cleanly and reliably. Built for performance enthusiasts and professional builders alike, this plug...AERFCM3717- SKU:
- AERFCM3717
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MFG Part #:
- FCM3717
$18.49 -
Aeroquip #10 Alm Flare Plug FCM3716
AEROQUIP
$12.49Keep your AN fittings sealed tight and looking sharp with the Aeroquip FCM3716 #10 Aluminum Flare Plug. Built for performance applications, this blue anodized plug offers reliable leak protection while adding a clean, finished look to unused ports. A...AERFCM3716- SKU:
- AERFCM3716
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MFG Part #:
- FCM3716
$12.49 -
Aeroquip #8 Alm Flare Plug FCM3715
AEROQUIP
$5.99Keep your hydraulic and fuel systems sealed tight with the Aeroquip FCM3715 #8 Aluminum Flare Plug — a must-have for any performance build or repair job. Machined from lightweight aluminum with a striking blue anodized finish, this plug delivers reliable...AERFCM3715- SKU:
- AERFCM3715
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- FCM3715
$5.99
