Select Your Ride

1
2
3

AN-NPT Fittings and Components

AN-NPT Fittings and Components

AN-NPT Fittings and Components

Circle Track AN NPT Fittings and Components at JJ Motorsports

AN-NPT fittings and components bridge the gap between different thread standards, offering flexibility in your fluid system design. Known for their versatility, they ensure a snug fit and efficient flow. Pair them with additional high-performance system fittings to create a strong, fully integrated setup.

Shop trusted brands like Fragola for push-lock options, Aeroquip for socketless fittings. Explore related categories such as High-Performance System Fittings for complete fluid system solutions or Circle Track Hoses for matching lines.

Top Circle Track AN NPT Fittings and Components

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
  • #10 Male to 1/2in NPT 90 Deg Ano-Tuff Adapter EARAT982210ERL

    Earls #10 Male to 1/2in NPT 90 Deg Ano-Tuff Adapter AT982210ERL

    EARLS

    $33.48
    When you're running a precision fuel system, oil cooler, or intercooler setup, adapter fittings are non-negotiable—they ensure leak-free connections between different port standards. This Earls 90-degree adapter bridges the gap between AN-spec components...
    EARAT982210ERL
    SKU:
    EARAT982210ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    AT982210ERL
    $33.48
    Qty in Cart: 0
    Quantity:
    Price:
    $33.48
    Subtotal:
  • #8 Male to 3/8in NPT 90 Deg Ano-Tuff Adapter EARAT982208ERL

    Earls #8 Male to 3/8in NPT 90 Deg Ano-Tuff Adapter AT982208ERL

    EARLS

    $20.09
    If you're running a high-performance fuel system, oil cooler, or custom fluid routing setup, this adapter is essential for bridging incompatible port standards without compromise. The 90-degree configuration saves space in tight engine bays while the...
    EARAT982208ERL
    SKU:
    EARAT982208ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    AT982208ERL
    $20.09
    Qty in Cart: 0
    Quantity:
    Price:
    $20.09
    Subtotal:
  • #6 Male to 1/4in NPT 90 Deg Ano-Tuff Adapter EARAT982206ERL

    Earls #6 Male to 1/4in NPT 90 Deg Ano-Tuff Adapter AT982206ERL

    EARLS

    $15.79
    If you're running a custom cooling, fuel, or oil system, adapter fittings are the unsung heroes that make clean, leak-free connections possible. This Earls #6 Male to 1/4in NPT 90 Degree adapter gives you the flexibility to join different line sizes and...
    EARAT982206ERL
    SKU:
    EARAT982206ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    AT982206ERL
    $15.79
    Qty in Cart: 0
    Quantity:
    Price:
    $15.79
    Subtotal:
  • #4 Male to 1/8in NPT 90 Deg Ano-Tuff Adapter EARAT982204ERL

    Earls #4 Male to 1/8in NPT 90 Deg Ano-Tuff Adapter AT982204ERL

    EARLS

    $15.79
    This adapter bridges the gap between AN-line plumbing and NPT port systems—essential when routing fuel, oil, or coolant lines to engine management sensors or factory ports. The 90-degree configuration saves space in tight engine bays while the black...
    EARAT982204ERL
    SKU:
    EARAT982204ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    AT982204ERL
    $15.79
    Qty in Cart: 0
    Quantity:
    Price:
    $15.79
    Subtotal:
  • #8 Male to 1/2in NPT Ano-Tuff Adapter EARAT981688ERL

    Earls #8 Male to 1/2in NPT Ano-Tuff Adapter AT981688ERL

    EARLS

    $12.89
    If you're running a fuel system, cooling lines, or custom plumbing on your race car or high-performance build, you need adapters that handle pressure without leaking. This Earls #8 Male to 1/2in NPT adapter bridges two industry-standard fitting sizes,...
    EARAT981688ERL
    SKU:
    EARAT981688ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    AT981688ERL
    $12.89
    Qty in Cart: 0
    Quantity:
    Price:
    $12.89
    Subtotal:
  • #6 Male to 1/2in NPT Ano-Tuff Adapter EARAT981668ERL

    Earls #6 Male to 1/2in NPT Ano-Tuff Adapter AT981668ERL

    EARLS

    $18.68
    If you're running a custom cooling or fuel system with mixed fitting standards, this Earls adapter bridges the gap between -6 AN and 1/2" NPT connections without compromise. Black anodized aluminum construction delivers durability and corrosion...
    EARAT981668ERL
    SKU:
    EARAT981668ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    MFG Part #:
    AT981668ERL
    $18.68
    Qty in Cart: 0
    Quantity:
    Price:
    $18.68
    Subtotal:
  • #6 Male to 3/8in NPT Ano-Tuff Adapter EARAT981666ERL

    Earls #6 Male to 3/8in NPT Ano-Tuff Adapter AT981666ERL

    EARLS

    $9.70
    Fluid system transitions don't have to be complicated. This Earls adapter bridges the gap between AN fittings and NPT ports with precision engineering, eliminating leaks and ensuring clean, reliable connections in fuel, oil, or coolant lines. Black...
    EARAT981666ERL
    SKU:
    EARAT981666ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    MFG Part #:
    AT981666ERL
    $9.70
    Qty in Cart: 0
    Quantity:
    Price:
    $9.70
    Subtotal:
  • #6 to 1/8in NPT Ano-Tuff Adapter Fitting EARAT981662ERL

    Earls #6 to 1/8in NPT Ano-Tuff Adapter Fitting AT981662ERL

    EARLS

    $10.02
    Thread mismatches between your fuel, oil, and coolant systems don't have to compromise your setup. This Earls adapter bridges the gap between AN and NPT connections, letting you integrate quality components without custom fabrication. The black anodized...
    EARAT981662ERL
    SKU:
    EARAT981662ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    MFG Part #:
    AT981662ERL
    $10.02
    Qty in Cart: 0
    Quantity:
    Price:
    $10.02
    Subtotal:
  • 4an to 3/8 NPT Adapter Fitting EARAT981646ERL

    Earls 4an to 3/8 NPT Adapter Fitting AT981646ERL

    EARLS

    $12.89
    When you're routing fluid lines in a high-performance setup, adapter fittings are non-negotiable—they ensure reliable connections between different port standards without compromising flow or introducing leaks. The Earls 4AN to 3/8 NPT adapter gives you...
    EARAT981646ERL
    SKU:
    EARAT981646ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    AT981646ERL
    $12.89
    Qty in Cart: 0
    Quantity:
    Price:
    $12.89
    Subtotal:
  • #4 Male to 1/4in NPT Ano-Tuff Adapter EARAT981644ERL

    Earls #4 Male to 1/4in NPT Ano-Tuff Adapter AT981644ERL

    EARLS

    $10.00
    When you're plumbing together a high-performance fuel or coolant system, mismatched fittings create leak points and flow restrictions that cost you on the track. This Earls adapter bridges the gap between AN and NPT standards, giving you the flexibility...
    EARAT981644ERL
    SKU:
    EARAT981644ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    AT981644ERL
    $10.00
    Qty in Cart: 0
    Quantity:
    Price:
    $10.00
    Subtotal:
  • #12 Male to 1/2in NPT Ano-Tuff Adapter EARAT981613ERL

    Earls #12 Male to 1/2in NPT Ano-Tuff Adapter AT981613ERL

    EARLS

    $21.53
    When you're building a custom cooling, fuel, or hydraulic system, port compatibility matters. This Earls adapter bridges the gap between AN fittings and NPT ports, eliminating the need for custom fabrication and reducing potential leak points. The black...
    EARAT981613ERL
    SKU:
    EARAT981613ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    AT981613ERL
    $21.53
    Qty in Cart: 0
    Quantity:
    Price:
    $21.53
    Subtotal:
  • #10 Male to 3/8in NPT Ano-Tuff Adapter EARAT981611ERL

    Earls #10 Male to 3/8in NPT Ano-Tuff Adapter AT981611ERL

    EARLS

    $12.89
    When you're building or modifying a fuel system, oil cooler line, or any pressurized fluid circuit, adapter fittings are non-negotiable for leak-free connections. This Earls #10 Male to 3/8in NPT Ano-Tuff Adapter bridges two different AN and NPT...
    EARAT981611ERL
    SKU:
    EARAT981611ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MFG Part #:
    AT981611ERL
    $12.89
    Qty in Cart: 0
    Quantity:
    Price:
    $12.89
    Subtotal:
  • #10 Male to 1/2in NPT Ano-Tuff Adapter EARAT981610ERL

    Earls #10 Male to 1/2in NPT Ano-Tuff Adapter AT981610ERL

    EARLS

    $14.35
    If you're running a custom fuel system, oil cooler, or any pressurized line setup, you need adapters you can trust to seal without leaks. This Earls #10 Male to 1/2in NPT adapter bridges two industry-standard fitting sizes with the reliability of black...
    EARAT981610ERL
    SKU:
    EARAT981610ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    MFG Part #:
    AT981610ERL
    $14.35
    Qty in Cart: 0
    Quantity:
    Price:
    $14.35
    Subtotal:
  • #10 Male to 3/4in NPT Ano-Tuff Adapter EARAT981609ERL

    Earls #10 Male to 3/4in NPT Ano-Tuff Adapter AT981609ERL

    EARLS

    $20.09
    When you're integrating NPT threaded ports into an AN-line system, you need an adapter that won't compromise flow or leak under pressure. This Earls straight adapter delivers the precise fitment and reliability that professional racing builds demand,...
    EARAT981609ERL
    SKU:
    EARAT981609ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    AT981609ERL
    $20.09
    Qty in Cart: 0
    Quantity:
    Price:
    $20.09
    Subtotal:
  • #8 Male to 3/8in. NPT Ano-Tuff Adapter EARAT981608ERL

    Earls #8 Male to 3/8in. NPT Ano-Tuff Adapter AT981608ERL

    EARLS

    $14.31
    If you're running aftermarket fuel systems, oil coolers, or custom hydraulic lines, you need a reliable adapter that bridges different port standards without compromising flow or durability. This Earls #8 Male to 3/8in. NPT adapter eliminates the...
    EARAT981608ERL
    SKU:
    EARAT981608ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    AT981608ERL
    $14.31
    Qty in Cart: 0
    Quantity:
    Price:
    $14.31
    Subtotal:
  • Adapter Fitting Straight 8an to 1/4 NPT EARAT981607ERL

    Earls Adapter Fitting Straight 8an to 1/4 NPT AT981607ERL

    EARLS

    $17.20
    When building a custom cooling or fuel system, mismatched fittings create leak points and restrict flow—compromising both reliability and performance. This Earls straight adapter bridges 8 AN and 1/4 NPT connections with precision-engineered aluminum...
    EARAT981607ERL
    SKU:
    EARAT981607ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    AT981607ERL
    $17.20
    Qty in Cart: 0
    Quantity:
    Price:
    $17.20
    Subtotal:
  • #6 Male to 1/4in. NPT Ano-Tuff Adapter EARAT981606ERL

    Earls #6 Male to 1/4in. NPT Ano-Tuff Adapter AT981606ERL

    EARLS

    $7.78
    When integrating legacy NPT components into a modern -6 AN plumbing system, you need a fitting that bridges the gap without compromise. This Earls adapter provides a clean, reliable connection point for fuel lines, oil coolers, or cooling system...
    EARAT981606ERL
    SKU:
    EARAT981606ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    AT981606ERL
    $7.78
    Qty in Cart: 0
    Quantity:
    Price:
    $7.78
    Subtotal:
  • #4 Male to 1/8in. NPT Ano-Tuff Adapter EARAT981604ERL

    Earls #4 Male to 1/8in. NPT Ano-Tuff Adapter AT981604ERL

    EARLS

    $7.14
    Mixing -4 AN and NPT threaded components in your fuel, oil, or coolant systems demands a reliable adapter that won't leak under pressure. Earls' Ano-Tuff series delivers precision-machined aluminum construction with hard-anodized protection, ensuring...
    EARAT981604ERL
    SKU:
    EARAT981604ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    AT981604ERL
    $7.14
    Qty in Cart: 0
    Quantity:
    Price:
    $7.14
    Subtotal:
  • St. #3 > 1/8 Npt Adapter Fitting Black EARAT981603ERL

    Earls St. #3 > 1/8 Npt Adapter Fitting Black AT981603ERL

    EARLS

    $7.10
    Fluid system adapters are critical connection points in high-performance builds—mismatched fittings lead to leaks, pressure loss, and costly downtime. This Earls straight adapter bridges the gap between AN and NPT standards, giving you the flexibility to...
    EARAT981603ERL
    SKU:
    EARAT981603ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    MFG Part #:
    AT981603ERL
    Qty in Cart: 0
    Quantity:
    Price:
    $7.10
    Subtotal:
  • #10 Male Union Ano-Tuff  EARAT981510ERL

    Earls #10 Male Union Ano-Tuff AT981510ERL

    EARLS

    $15.76
    When you're running high-pressure fuel, coolant, or brake lines, connection integrity is non-negotiable. The Earls #10 Male Union Ano-Tuff AT981510ERL delivers a leak-free, straight-through connection with the durability to handle repeated thermal cycles...
    EARAT981510ERL
    SKU:
    EARAT981510ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    AT981510ERL
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    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