Carburetor Needle and Seats
Circle Track Race Car Carburetor Needle & Seats at JJ Motorsports
Ensure reliable fuel delivery with premium needle and seat assemblies from JJ Motorsports, engineered for leak-free operation and consistent bowl levels in high-vibration, high-G circle track racing. These Viton-tipped and stainless steel needle & seats are designed for Holley 4150/4160 carbs, delivering precise control and durability for dirt track, oval, and stock car setups — keeping your carb dialed lap after lap.
Shop Holley needle & seats for race-proven reliability. Whether you're running gas or alcohol on a short track or a high-bank superspeedway, these components pair perfectly with our jets & air bleeds or explore rebuild kits to finish your carburetor refresh and dominate the field.
Top Circle Track Carburetor Needle & Seats
- .130in Needle & Seat Assembly Viton HLY6-522 – High-flow .130" Viton needle & seat; ideal for alcohol carbs and high-fuel-demand engines.
- .125 Viton Needle & Seat 10-Pack 5115X – .125" Viton-tipped needle & seat pack; perfect for gas setups and easy spares at the track.
- Needle & Seat HLY6-500-2 – Standard .110" Viton needle & seat; reliable OEM replacement for Holley 4150/4160 series carbs.
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
-
AED .125 Viton Needle & Seat 10-pk 5115X
ADVANCED ENGINE DESIGN
$97.40Carburetor needle and seat assemblies wear down over time, leading to fuel leaks, inconsistent jetting, and unpredictable performance. These AED Viton replacements restore precise fuel metering and eliminate the guesswork from tuning. A 10-pack gives you...AED5115X- SKU:
- AED5115X
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
$97.40 -
Holley .130in Needle & Seat Assembly - Viton 6-522
HOLLEY
$43.87A worn or damaged fuel inlet needle and seat is one of the most common culprits behind fuel delivery inconsistencies, flooding carburetors, and unpredictable idle quality. The Holley .130in Needle & Seat Assembly with Viton sealing ensures precise fuel...HLY6-522- SKU:
- HLY6-522
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
$43.87 -
Holley .150in Needle & Seat Assembly 6-521
HOLLEY
$46.07A precision needle and seat assembly is critical for consistent fuel metering in Holley carburetors—any wear or contamination directly impacts your air-fuel ratio and engine performance. This .150in titanium assembly delivers adjustability and...HLY6-521- SKU:
- HLY6-521
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 6-521
$46.07 -
Holley Needle & Seat 6-519-2
HOLLEY
$58.67Fuel delivery precision is the foundation of carburetor performance, and a worn or mismatched needle and seat directly undermines your tuning efforts and engine response. The Holley Needle & Seat 6-519-2 ensures consistent fuel metering across the full...HLY6-519-2- SKU:
- HLY6-519-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 6-519-2
$58.67 -
Holley Viton Inlet Needle & Seat 6-518-2
HOLLEY
$43.87The fuel delivery system is only as good as its metering components, and a worn or damaged inlet needle and seat will cause lean-out conditions, hesitation, and unpredictable jetting behavior. The Holley Viton Inlet Needle & Seat 6-518-2 restores precise...HLY6-518-2- SKU:
- HLY6-518-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 6-518-2
$43.87 -
Holley Needle & Seat 6-515-2
HOLLEY
$51.19A worn or damaged needle and seat can cause fuel flooding, inconsistent jetting, and unpredictable carb performance—issues that compromise both reliability and lap times. The Holley Needle & Seat 6-515-2 delivers precise fuel metering with adjustable...HLY6-515-2- SKU:
- HLY6-515-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 6-515-2
$51.19 -
Holley Needle & Seat 6-506
HOLLEY
$21.91A worn or poorly calibrated needle and seat directly impacts fuel delivery precision, affecting both idle quality and full-throttle performance. The Holley 6-506 delivers consistent fuel metering across the RPM range, eliminating hesitation and ensuring...HLY6-506- SKU:
- HLY6-506
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 6-506
$21.91 -
Holley Needle & Seat 6-504
HOLLEY
$26.20A worn or improperly seated needle and seat assembly directly impacts fuel delivery precision and carburetor response—critical factors for consistent performance across wide throttle ranges. The Holley 6-504 restores tight metering control, eliminating...HLY6-504- SKU:
- HLY6-504
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 6-504
$26.20 -
Holley Needle & Seat 6-502-2
HOLLEY
$84.55Fuel delivery precision is critical to carburetor performance, and a worn or mismatched needle and seat can cause lean stumbles, flooding, and inconsistent idle quality. The Holley 6-502-2 needle and seat assembly gives you factory-spec fuel control with...HLY6-502-2- SKU:
- HLY6-502-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 6-502-2
$84.55 -
Holley Needle & Seat 6-500-2
HOLLEY
$86.15A worn or improperly seated needle and seat directly compromises fuel delivery precision, leading to lean/rich conditions and erratic idle quality. The Holley 6-500-2 restores predictable fuel metering, essential for consistent carburetor performance and...HLY6-500-2- SKU:
- HLY6-500-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 6-500-2
$86.15 -
AED .150 Alcohol Needle & Seat - Each 5117
ADVANCED ENGINE DESIGN
$11.32.150 Alcohol Needle & Seat - EachNeedle and SeatAdjustable0.150 OrificeStainlessHolley / Quick Fuel CarburetorsAlcoholEachAED5117- SKU:
- AED5117
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 5117
$11.32Qty in Cart: 0Quantity:Price:$11.32Subtotal: -
AED .125 Viton Needle & Seat - Each 5115
ADVANCED ENGINE DESIGN
$10.65A worn or damaged needle and seat directly compromises your carb's fuel delivery precision, leading to inconsistent jetting and performance issues. This AED Viton needle and seat assembly restores reliable fuel metering across your entire RPM range,...AED5115- SKU:
- AED5115
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 5115
$10.65 -
AED .110 Viton Needle & Seat - Pair 5110
ADVANCED ENGINE DESIGN
$11.99Carburetor tuning precision starts with a reliable needle and seat assembly. The AED .110 Viton Needle & Seat maintains consistent fuel metering under varying engine loads and temperatures, ensuring repeatable performance whether you're on the dyno or at...AED5110- SKU:
- AED5110
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 5110
$11.99Qty in Cart: 0Quantity:Price:$11.99Subtotal:
