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
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AED .125 Viton Needle & Seat 10-pk 5115X
ADVANCED ENGINE DESIGN
$104.17Carburetor 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...AED5115X- SKU:
- AED5115X
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
$104.17 -
Holley .130in Needle & Seat Assembly - Viton 6-522
HOLLEY
$49.95A 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 &...HLY6-522- SKU:
- HLY6-522
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
$49.95 -
Holley .150in Needle & Seat Assembly 6-521
HOLLEY
$51.95A 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...HLY6-521- SKU:
- HLY6-521
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 6-521
$51.95 -
Holley Needle & Seat 6-519-2
HOLLEY
$67.79Fuel 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...HLY6-519-2- SKU:
- HLY6-519-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 6-519-2
$67.79 -
Holley Viton Inlet Needle & Seat 6-518-2
HOLLEY
$49.95The 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...HLY6-518-2- SKU:
- HLY6-518-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 6-518-2
$49.95 -
Holley Needle & Seat 6-515-2
HOLLEY
$51.95A 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...HLY6-515-2- SKU:
- HLY6-515-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 6-515-2
$51.95 -
Holley Needle & Seat 6-506
HOLLEY
$25.31A 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...HLY6-506- SKU:
- HLY6-506
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 6-506
$25.31 -
Holley Needle & Seat 6-504
HOLLEY
$30.27A 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...HLY6-504- SKU:
- HLY6-504
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 6-504
$30.27 -
Holley Needle & Seat 6-502-2
HOLLEY
$87.95Fuel 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...HLY6-502-2- SKU:
- HLY6-502-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 6-502-2
$87.95 -
Holley Needle & Seat 6-500-2
HOLLEY
$89.59A 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...HLY6-500-2- SKU:
- HLY6-500-2
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MFG Part #:
- 6-500-2
$89.59 -
AED .150 Alcohol Needle & Seat - Each 5117
ADVANCED ENGINE DESIGN
$12.11.150 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
$12.11 -
AED .125 Viton Needle & Seat - Each 5115
ADVANCED ENGINE DESIGN
$11.39A 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...AED5115- SKU:
- AED5115
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 5115
$11.39Qty in Cart: 0Quantity:Price:$11.39Subtotal: -
AED .110 Viton Needle & Seat - Pair 5110
ADVANCED ENGINE DESIGN
$12.82Carburetor 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...AED5110- SKU:
- AED5110
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MFG Part #:
- 5110
$12.82
