Select Your Ride

1
2
3

Fittings and Plugs

Fittings and Plugs

Fittings and Plugs

Circle Track AN/NPT Fittings & Plugs at JJ Motorsports

Achieve precision and reliability with fittings and plugs designed for high-pressure applications from JJ Motorsports. These components are essential for creating secure, leak-free connections in fuel, oil, and fluid lines, keeping your circle track car in peak condition. Integrate them with other specialized high-performance components to elevate your setup.

Shop trusted brands like Fragola for push-lock fittings, Aeroquip for bulkhead options, JJ Motorsports for custom kits, and Allstar Performance for versatile solutions. Explore related categories such as Hose Ends for secure connections or Cap and Plug Fittings for sealing needs.

Top Circle Track AN/NPT Fittings & Plugs

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
  • Fuel Pressure Ga. Adapt.  EAR100192ERL

    Earls Fuel Pressure Ga. Adapt. 100192ERL

    EARLS

    $20.10
    Accurate fuel pressure monitoring is non-negotiable for tuning and diagnosing forced induction systems, carbureted engines, and fuel injection setups. This Earls adapter provides a clean, reliable connection point for your fuel pressure gauge without...
    EAR100192ERL
    SKU:
    EAR100192ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    100192ERL
    $20.10
    Qty in Cart: 0
    Quantity:
    Price:
    $20.10
    Subtotal:
  • `-8AN Male x 1/2 Barb Fitting DER98205

    Derale `-8AN Male x 1/2 Barb Fitting 98205

    DERALE

    $6.58
    Reliable fluid routing is critical when building high-performance cooling and fuel systems—any leak or flow restriction can compromise engine efficiency and safety. The Derale -8AN Male x 1/2 Barb Fitting provides a secure, direct connection between your...
    DER98205
    SKU:
    DER98205
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    98205
    $6.58
    Qty in Cart: 0
    Quantity:
    Price:
    $6.58
    Subtotal:
  • `-6AN Male x 3/8 Barb Fitting DER98204

    Derale `-6AN Male x 3/8 Barb Fitting 98204

    DERALE

    $6.58
    When you're building a custom cooling or fluid transfer system, adapter fittings are non-negotiable—they're the connection points that determine whether your setup runs flawlessly or fails under pressure. This Derale -6AN male to 3/8" barb fitting gives...
    DER98204
    SKU:
    DER98204
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    98204
    $6.58
    Qty in Cart: 0
    Quantity:
    Price:
    $6.58
    Subtotal:
  • `-10AN Female Swivel x 1/2in Barb Fitting DER98203

    Derale `-10AN Female Swivel x 1/2in Barb Fitting 98203

    DERALE

    $8.15
    Proper hose-to-fitting connections are critical in high-performance cooling and fuel systems where vibration and pressure fluctuations demand secure, leak-free joints. This Derale swivel fitting eliminates common alignment issues during installation...
    DER98203
    SKU:
    DER98203
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    MFG Part #:
    98203
    $8.15
    Qty in Cart: 0
    Quantity:
    Price:
    $8.15
    Subtotal:
  • `-8AN Female Swivel x 1/2 in Barb Fitting DER98202

    Derale `-8AN Female Swivel x 1/2 in Barb Fitting 98202

    DERALE

    $6.58
    Reliable fluid transfer starts with a quality fitting that won't leak under pressure or vibration. This Derale swivel fitting eliminates hose kinking and strain by allowing flexible movement while maintaining a secure connection—essential for cooling...
    DER98202
    SKU:
    DER98202
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    98202
    $6.58
    Qty in Cart: 0
    Quantity:
    Price:
    $6.58
    Subtotal:
  • Straight Hose Barb Fitti ng 1/2 NPT F x 1/2 Barb DER98106

    Derale Straight Hose Barb Fitti ng 1/2 NPT F x 1/2 Barb 98106

    DERALE

    $7.98
    A reliable hose barb fitting is foundational to any cooling or fluid transfer system—this Derale adapter ensures leak-free connections between your hose lines and NPT-threaded ports. Whether you're building a custom cooling loop or upgrading your...
    DER98106
    SKU:
    DER98106
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    MFG Part #:
    98106
    $7.98
    Qty in Cart: 0
    Quantity:
    Price:
    $7.98
    Subtotal:
  • Straight Hose Barb Fitti ng 1/4 NPT F x 3/8 Barb DER98104

    Derale Straight Hose Barb Fitti ng 1/4 NPT F x 3/8 Barb 98104

    DERALE

    $7.51
    Reliable fluid transfer is essential in any high-performance cooling or fuel system, and improper fittings lead to leaks, pressure loss, and potential engine damage. The Derale 98104 straight hose barb fitting provides a secure, leak-free connection...
    DER98104
    SKU:
    DER98104
    Availability:
    Ships Same Business Day
    Weight:
    0.75 LBS
    MFG Part #:
    98104
    $7.51
    Qty in Cart: 0
    Quantity:
    Price:
    $7.51
    Subtotal:
  • Straight Hose Barb Fitti ng 1/2 NPT M x 1/2 Barb DER98103

    Derale Straight Hose Barb Fitti ng 1/2 NPT M x 1/2 Barb 98103

    DERALE

    $6.27
    If you're building a custom cooling or fluid system, reliable hose connections are non-negotiable. This Derale straight hose barb fitting bridges 1/2" hose to standard 1/2" NPT male ports without leaks or compatibility headaches. Aluminum construction...
    DER98103
    SKU:
    DER98103
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    98103
    $6.27
    Qty in Cart: 0
    Quantity:
    Price:
    $6.27
    Subtotal:
  • Straight Hose Barb Fitti ng 3/8 NPT M x 1/2 Barb DER98102

    Derale Straight Hose Barb Fitti ng 3/8 NPT M x 1/2 Barb 98102

    DERALE

    $6.27
    If you're building a custom cooling system or upgrading your fluid lines, you need a fitting that won't leak under pressure. This Derale hose barb adapter bridges the gap between 1/2" hose and 3/8" NPT ports, giving you a reliable, leak-free connection...
    DER98102
    SKU:
    DER98102
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    98102
    $6.27
    Qty in Cart: 0
    Quantity:
    Price:
    $6.27
    Subtotal:
  • Straight Hose Barb Fitti ng 3/8 NPT M x 3/8 Barb DER98101

    Derale Straight Hose Barb Fitti ng 3/8 NPT M x 3/8 Barb 98101

    DERALE

    $6.27
    When you're building a custom cooling or fluid transfer system, hose connections need to be reliable and leak-free under pressure. The Derale Straight Hose Barb Fitting 98101 provides a straightforward, no-nonsense adapter that bridges 3/8" hose lines to...
    DER98101
    SKU:
    DER98101
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MFG Part #:
    98101
    $6.27
    Qty in Cart: 0
    Quantity:
    Price:
    $6.27
    Subtotal:
  • Straight Hose Barb Fitti ng 1/4 NPT M x 3/8 Barb DER98100

    Derale Straight Hose Barb Fitti ng 1/4 NPT M x 3/8 Barb 98100

    DERALE

    $6.27
    Proper coolant and fluid routing is critical to system reliability, and this brass hose barb fitting delivers a leak-free connection where precision matters. Whether you're plumbing a custom cooling loop or integrating auxiliary components, the 1/4 NPT...
    DER98100
    SKU:
    DER98100
    Availability:
    Ships Same Business Day
    Weight:
    0.24 LBS
    MFG Part #:
    98100
    $6.27
    Qty in Cart: 0
    Quantity:
    Price:
    $6.27
    Subtotal:
  • #8 Fuel Pump Fitting  CAR156-386

    Carter #8 Fuel Pump Fitting 156386

    CARTER

    $16.99
    If you're running a fuel system with AN fittings and need to adapt to a Carter fuel pump with a 5/8-18 port, this #8 fitting provides a leak-free, secure connection without fabrication. Steel construction ensures durability under pressure, while the...
    CAR156-386
    SKU:
    CAR156-386
    Availability:
    Ships Same Business Day
    Weight:
    0.18 LBS
    MFG Part #:
    156386
    $16.99
    Qty in Cart: 0
    Quantity:
    Price:
    $16.99
    Subtotal:
  • #10 Fuel Pump Fitting  CAR156-385

    Carter #10 Fuel Pump Fitting 156385

    CARTER

    $17.99
    If you're running a fuel system that demands reliable, leak-free connections, this Carter #10 fitting is essential for proper AN line integration. Whether you're building a custom fuel rail, upgrading to a high-flow pump setup, or connecting aftermarket...
    CAR156-385
    SKU:
    CAR156-385
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    MFG Part #:
    156385
    Qty in Cart: 0
    Quantity:
    Price:
    $17.99
    Subtotal:
  • Drain Plug 1/4 NPT Magnetic BERSG-1063

    Bert Drain Plug 1/4 NPT Magnetic SG-1063

    BERT TRANSMISSIONS

    $3.99
    Ferrous debris in transmission fluid is inevitable—metal particles from normal wear accumulate over time and accelerate damage to internal components. The Bert Drain Plug 1/4 NPT Magnetic captures these particles before they circulate back through your...
    BERSG-1063
    SKU:
    BERSG-1063
    Availability:
    Ships Same Business Day
    Weight:
    0.50 LBS
    MFG Part #:
    SG-1063
    $3.99
    Qty in Cart: 0
    Quantity:
    Price:
    $3.99
    Subtotal:
  • 1/2in NPT Aluminum Temp. Adapter Fitting - Red ATM2273

    Autometer 1/2in NPT Aluminum Temp. Adapter Fitting - Red 2273

    AUTOMETER

    $16.49
    If you're installing a mechanical temperature gauge in your engine bay, you need a reliable adapter that won't leak under pressure or fail when heat cycles occur. This Autometer aluminum fitting bridges the gap between your gauge sensor and engine block,...
    ATM2273
    SKU:
    ATM2273
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    2273
    $16.49
    Qty in Cart: 0
    Quantity:
    Price:
    $16.49
    Subtotal:
  • 3/8in Npt Aluminum Temp. Adapter Fitting - Red ATM2272

    Autometer 3/8in Npt Aluminum Temp. Adapter Fitting - Red 2272

    AUTOMETER

    $17.99
    If you're running mechanical temperature gauges in your race car or performance build, you need reliable adapter fittings that won't leak or fail under pressure. This AutoMeter aluminum temperature adapter bridges the gap between your engine's 3/8in NPT...
    ATM2272
    SKU:
    ATM2272
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    2272
    $17.99
    Qty in Cart: 0
    Quantity:
    Price:
    $17.99
    Subtotal:
  • 3/8in Npt Ext Temp Adapter ATM2271

    Autometer 3/8in Npt Ext Temp Adapter 2271

    AUTOMETER

    $22.99
    If you're installing mechanical temperature gauges in tight engine compartments, this extended adapter bridges the gap between your gauge and engine block without forcing awkward angles or compromising sensor accuracy. The brass construction resists...
    ATM2271
    SKU:
    ATM2271
    Availability:
    Ships Same Business Day
    Weight:
    0.14 LBS
    MFG Part #:
    2271
    $22.99
    Qty in Cart: 0
    Quantity:
    Price:
    $22.99
    Subtotal:
  • 1/2in Npt Temp Adapter  ATM2264

    Autometer 1/2in Npt Temp Adapter 2264

    AUTOMETER

    $12.49
    If you're running mechanical temperature gauges in your race car or street machine, proper adapter fitment is critical to accurate readings and leak-free operation. The Autometer 1/2in NPT Temp Adapter bridges the gap between your engine block's threaded...
    ATM2264
    SKU:
    ATM2264
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    MFG Part #:
    2264
    $12.49
    Qty in Cart: 0
    Quantity:
    Price:
    $12.49
    Subtotal:
  • 3/8in Npt Temp Adapter  ATM2263

    Autometer 3/8in Npt Temp Adapter 2263

    AUTOMETER

    $12.49
    If you're running mechanical temperature gauges in your race car or performance build, you need reliable adapter fittings that won't leak under pressure or vibration. This AutoMeter temp adapter bridges the gap between your gauge's 5/8-18 female port and...
    ATM2263
    SKU:
    ATM2263
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    2263
    $12.49
    Qty in Cart: 0
    Quantity:
    Price:
    $12.49
    Subtotal:
  • Rad Overflow Fitting 1/8 NPT to 5/16in Hose Alum ALL99312

    Allstar Performance Rad Overflow Fitting 1/8 NPT to 5/16in Hose Alum ALL99312

    ALLSTAR PERFORMANCE

    $4.49
    A properly sealed cooling system is critical to maintaining engine temperature stability under high-performance conditions. This Allstar Performance radiator overflow fitting ensures a reliable connection between your radiator overflow tank and hose...
    ALL99312
    SKU:
    ALL99312
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    ALL99312
    $4.49
    Qty in Cart: 0
    Quantity:
    Price:
    $4.49
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

SECURE & SAFE PAYMENT

EASY RETURNS

FAST DELIVERY

AUTHORIZED DEALER