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Weld In Bungs and Fittings

Weld In Bungs and Fittings

Weld In Bungs and Fittings

Circle Track Weld-In Bungs and Fittings at JJ Motorsports

Weld-in bungs and fittings are tailored for creating custom attachment points for fuel tanks, oil pans, and more. Their robust construction holds up under demanding race conditions. Enhance your setup with other innovative performance parts for a seamless assembly in demanding IMCA, USMTS, and dirt oval racing for late models, modifieds, and street stocks.

Shop trusted brands like Fragola for push-lock options, Allstar Performance for AN weld bungs. Explore related categories such as Fittings and Plugs for complete fluid system solutions.

Top Circle Track Weld-In Bungs and Fittings

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
  • #20 Male Weld Fitting  EAR997120ERL

    Earls #20 Male Weld Fitting 997120ERL

    EARLS

    $40.20
    When you're running a high-performance fuel system, oil cooler setup, or custom fluid line configuration, reliable fittings are non-negotiable. This Earls #20 Male Weld Fitting delivers the precision and durability demanded by professional racers and...
    EAR997120ERL
    SKU:
    EAR997120ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    MFG Part #:
    997120ERL
    Qty in Cart: 0
    Quantity:
    Price:
    $40.20
    Subtotal:
  • #16 Male Weld Fitting  EAR997116ERL

    Earls #16 Male Weld Fitting 997116ERL

    EARLS

    $31.96
    If you're building a custom fuel system, oil cooler setup, or any high-flow application, you need fittings you can trust to hold pressure and deliver reliability lap after lap. The Earls #16 Male Weld Fitting gives you a permanent, leak-free connection...
    EAR997116ERL
    SKU:
    EAR997116ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    997116ERL
    $31.96
    Qty in Cart: 0
    Quantity:
    Price:
    $31.96
    Subtotal:
  • #12 Male Weld Fitting  EAR997112ERL

    Earls #12 Male Weld Fitting 997112ERL

    EARLS

    $22.97
    If you're building a custom cooling or fuel system that demands a permanent, leak-free connection, the Earls #12 Male Weld Fitting delivers the reliability professional racers and serious fabricators depend on. This bung-style fitting integrates directly...
    EAR997112ERL
    SKU:
    EAR997112ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    MFG Part #:
    997112ERL
    $22.97
    Qty in Cart: 0
    Quantity:
    Price:
    $22.97
    Subtotal:
  • #10 Male Weld Fitting  EAR997110ERL

    Earls #10 Male Weld Fitting 997110ERL

    EARLS

    $14.35
    If you're building a custom fuel system, oil cooler setup, or any pressurized line configuration, you need fittings that won't compromise flow or safety. The Earls #10 Male Weld Fitting gives you a permanent, leak-free connection point that handles the...
    EAR997110ERL
    SKU:
    EAR997110ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    997110ERL
    $14.35
    Qty in Cart: 0
    Quantity:
    Price:
    $14.35
    Subtotal:
  • #8 Male Weld Fittings  EAR997108ERL

    Earls #8 Male Weld Fittings 997108ERL

    EARLS

    $7.09
    If you're building a custom fuel, oil, or coolant system that demands precision connections and permanent reliability, a weld-on fitting eliminates the risk of vibration-induced loosening that threaded connections can't always prevent. The Earls #8 Male...
    EAR997108ERL
    SKU:
    EAR997108ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    MFG Part #:
    997108ERL
    $7.09
    Qty in Cart: 0
    Quantity:
    Price:
    $7.09
    Subtotal:
  • #6 Male Weld Fitting  EAR997106ERL

    Earls #6 Male Weld Fitting 997106ERL

    EARLS

    $10.00
    When you're running a custom fuel system or precision coolant loop, reliable hydraulic connections are non-negotiable. This Earls weld fitting provides a permanent, leak-free joint that won't vibrate loose under extreme engine conditions. Built from...
    EAR997106ERL
    SKU:
    EAR997106ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.80 LBS
    MFG Part #:
    997106ERL
    $10.00
    Qty in Cart: 0
    Quantity:
    Price:
    $10.00
    Subtotal:
  • #4 Male Alum Weld Fitting EAR997104ERL

    Earls #4 Male Alum Weld Fitting 997104ERL

    EARLS

    $10.00
    If you're building a custom cooling or fuel system, you need fittings that won't compromise flow or reliability under pressure. This Earls aluminum weld fitting offers a direct, permanent connection for serious engine builders and fabricators who demand...
    EAR997104ERL
    SKU:
    EAR997104ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    997104ERL
    $10.00
    Qty in Cart: 0
    Quantity:
    Price:
    $10.00
    Subtotal:
  • 3/8 Npt Female Weld Fit.  EAR996703ERL

    Earls 3/8 Npt Female Weld Fit. 996703ERL

    EARLS

    $12.89
    Need a reliable fluid line interface for your custom cooling, fuel, or brake system? This Earls weld-on bung provides a leak-free NPT connection point with the durability of cast aluminum construction—ideal for fabricators building forced-induction or...
    EAR996703ERL
    SKU:
    EAR996703ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    996703ERL
    $12.89
    Qty in Cart: 0
    Quantity:
    Price:
    $12.89
    Subtotal:
  • 1/4 Npt Female Weld Fit.  EAR996702ERL

    Earls 1/4 Npt Female Weld Fit. 996702ERL

    EARLS

    $10.02
    If you're building a custom cooling, fuel, or pneumatic system, you need reliable fittings that won't leak under pressure. This Earls weld-on bung provides a permanent, leak-free connection point with the trusted engineering that professional racers...
    EAR996702ERL
    SKU:
    EAR996702ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    996702ERL
    $10.02
    Qty in Cart: 0
    Quantity:
    Price:
    $10.02
    Subtotal:
  • 1/8 Npt Female Weld Fit  EAR996701ERL

    Earls 1/8 Npt Female Weld Fit 996701ERL

    EARLS

    $8.61
    If you're routing fluid lines through your engine bay or fabricating a custom cooling or fuel system, you need reliable connection points that won't leak under pressure. This Earls weld-on bung provides a professional-grade, permanent installation...
    EAR996701ERL
    SKU:
    EAR996701ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    996701ERL
    $8.61
    Qty in Cart: 0
    Quantity:
    Price:
    $8.61
    Subtotal:
  • `-12 Male Steel Weld Ftg  EAR967112ERL

    Earls `-12 Male Steel Weld Ftg 967112ERL

    EARLS

    $20.09
    If you're building a custom fuel system, oil cooler setup, or any pressurized fluid line that demands a secure, permanent connection, this weld-on fitting is the foundation of a leak-free installation. The steel construction and 12 AN male thread provide...
    EAR967112ERL
    SKU:
    EAR967112ERL
    Availability:
    Ships Same Business Day
    Weight:
    5.00 LBS
    MFG Part #:
    967112ERL
    $20.09
    Qty in Cart: 0
    Quantity:
    Price:
    $20.09
    Subtotal:
  • `-8 Male Steel Weld Fitti  EAR967108ERL

    Earls `-8 Male Steel Weld Fitti 967108ERL

    EARLS

    $12.88
    If you're building a custom fuel, coolant, or brake line system, you need fittings you can trust to handle high-pressure applications without compromise. Earls' weld-on bungs provide a permanent, leak-free connection point that integrates seamlessly into...
    EAR967108ERL
    SKU:
    EAR967108ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    967108ERL
    $12.88
    Qty in Cart: 0
    Quantity:
    Price:
    $12.88
    Subtotal:
  • `-6 Male Steel Weld Fitti ng EAR967106ERL

    Earls `-6 Male Steel Weld Fitti ng 967106ERL

    EARLS

    $11.48
    If you're building a custom fuel system, oil cooler setup, or any pressurized line configuration, you need a fitting that won't fail under extreme conditions. The Earls -6 Male Steel Weld Fitting provides a permanent, rock-solid connection point that...
    EAR967106ERL
    SKU:
    EAR967106ERL
    Availability:
    Ships Same Business Day
    Weight:
    0.08 LBS
    MFG Part #:
    967106ERL
    $11.48
    Qty in Cart: 0
    Quantity:
    Price:
    $11.48
    Subtotal:
  • #12 To 3/4in Flare Adapter AERFCM2877

    Aeroquip #12 To 3/4in Flare Adapter FCM2877

    AEROQUIP

    $17.49
    If you're building a high-performance fuel or fluid system, the Aeroquip FCM2877 #12 to 3/4in Flare Adapter is the reliable, precision-engineered connection point you need. Designed for weld-on or braze installation, this rugged steel bung gives you a...
    AERFCM2877
    SKU:
    AERFCM2877
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    MFG Part #:
    FCM2877
    $17.49
    Qty in Cart: 0
    Quantity:
    Price:
    $17.49
    Subtotal:
  • #10 To 5/8in Flare Adapter AERFCM2875

    Aeroquip #10 To 5/8in Flare Adapter FCM2875

    AEROQUIP

    $12.99
    Take your fuel or oil system plumbing to the next level with the Aeroquip FCM2875 #10 to 5/8in Flare Adapter — a precision-engineered solution built for serious performance builds. Whether you're fabricating a custom fuel cell or upgrading an existing...
    AERFCM2875
    SKU:
    AERFCM2875
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    MFG Part #:
    FCM2875
    Qty in Cart: 0
    Quantity:
    Price:
    $12.99
    Subtotal:
  • #8an To 1/2in Adapter AERFCM2874

    Aeroquip #8an To 1/2in Adapter FCM2874

    AEROQUIP

    $13.49
    If you're building a custom fuel, oil, or cooling system, the Aeroquip FCM2874 #8AN to 1/2in Adapter is the reliable, no-fuss solution you need to get the job done right. Designed for precision fitment and built to last, this weld-on bung adapter makes...
    AERFCM2874
    SKU:
    AERFCM2874
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    MFG Part #:
    FCM2874
    $13.49
    Qty in Cart: 0
    Quantity:
    Price:
    $13.49
    Subtotal:
  • #6 To 3/8in Flare Adapter AERFCM2872

    Aeroquip #6 To 3/8in Flare Adapter FCM2872

    AEROQUIP

    $5.59
    When precision and reliability matter most, the Aeroquip FCM2872 #6 to 3/8in Flare Adapter delivers a clean, leak-free connection that serious builders trust. Designed for seamless integration into custom fuel, oil, or cooling systems, this weld-on bung...
    AERFCM2872
    SKU:
    AERFCM2872
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    FCM2872
    $5.59
    Qty in Cart: 0
    Quantity:
    Price:
    $5.59
    Subtotal:
  • #4 To 1/4in Flare Adapter AERFCM2871

    Aeroquip #4 To 1/4in Flare Adapter FCM2871

    AEROQUIP

    $9.99
    Tackle your fuel or fluid line connections with confidence using the Aeroquip FCM2871 #4 to 1/4in Flare Adapter. Designed for builders and performance enthusiasts who demand precision and reliability, this weld-on bung makes custom fabrication clean and...
    AERFCM2871
    SKU:
    AERFCM2871
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    FCM2871
    $9.99
    Qty in Cart: 0
    Quantity:
    Price:
    $9.99
    Subtotal:
  • #12 Tank Welding Bung  AERFCM2406

    Aeroquip #12 Tank Welding Bung FCM2406

    AEROQUIP

    $37.99
    Take your fuel or fluid system builds to the next level with the Aeroquip #12 Tank Welding Bung (FCM2406) — a precision-crafted, weld-on solution that delivers rock-solid, leak-free connections every time. Machined from lightweight aluminum, this bung is...
    AERFCM2406
    SKU:
    AERFCM2406
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    MFG Part #:
    FCM2406
    $37.99
    Qty in Cart: 0
    Quantity:
    Price:
    $37.99
    Subtotal:
  • #10 Tank Welding Bung  AERFCM2405

    Aeroquip #10 Tank Welding Bung FCM2405

    AEROQUIP

    $30.99
    Build a leak-free, high-performance fuel system from the ground up with the Aeroquip #10 Tank Welding Bung FCM2405. Designed for a clean, permanent weld-on installation, this bung gives you a rock-solid 10 AN female port right on your tank. Whether...
    AERFCM2405
    SKU:
    AERFCM2405
    Availability:
    Ships Same Business Day
    Weight:
    0.13 LBS
    MFG Part #:
    FCM2405
    $30.99
    Qty in Cart: 0
    Quantity:
    Price:
    $30.99
    Subtotal:
  • Total: items /

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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

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