Carburetor Pumps
Circle Track Race Car Carburetor Pumps at JJ Motorsports
Deliver the perfect shot with premium carburetor pump diaphragms from JJ Motorsports, engineered for instant fuel delivery and crisp throttle response in high-RPM racing conditions. These high-quality Holley alcohol and 50cc accelerator pump diaphragms are essential for 4150/4160 carbs, ensuring no hesitation and reliable performance for dirt track, oval, and stock car setups.
Shop top brands like Holley for race-proven reliability. Whether you're dialing in a short-track modified or a high-bank superspeedway late model, these pump diaphragms pair perfectly with our discharge nozzles or explore rebuild kits to finish your carburetor refresh and dominate the field.
Top Circle Track Carburetor Pumps
- Alcohol Diaphragm HLY135-9 – Holley alcohol-resistant diaphragm; ideal for methanol and E85 circle track carbs.
- Accelerator Pump Diaphragm 50cc HLY135-7 – 50cc pump diaphragm; reliable for gas setups in street stock and IMCA classes.
- 50cc Accelerator Pump Diaphragm 5337 – Heavy-duty 50cc diaphragm; smooth operation for high-vacuum racing 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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Holley Alcohol Diaphragm 135-9
HOLLEY
$26.20A worn or failed accelerator pump diaphragm kills carburetor response and throttle consistency—especially critical when you're running alcohol fuel and demand reliability at the track. The Holley 135-9 delivers the durability and precision your...HLY135-9- SKU:
- HLY135-9
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 135-9
$26.20 -
Holley 50cc Accel Pump Kit 20-11
HOLLEY
$83.39Off-the-line throttle response is everything in racing, and a undersized accelerator pump limits your potential. The Holley 50cc Accel Pump Kit 20-11 upgrades your carburetor's fuel delivery during acceleration, eliminating hesitation and providing the...HLY20-11- SKU:
- HLY20-11
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- MFG Part #:
- 20-11
$83.39 -
Holley Acc. Pump Diaphragm 50cc Pump 135-7
HOLLEY
$30.43The accelerator pump diaphragm is the critical component that meters fuel during throttle transitions, directly affecting your engine's response off the line. A worn or compromised diaphragm causes hesitation, stumbling, or flat spots—issues that...HLY135-7- SKU:
- HLY135-7
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MFG Part #:
- 135-7
$30.43 -
Holley Acc. Pump Diaphragm 30cc Pump 135-5
HOLLEY
$6.04A worn or degraded accelerator pump diaphragm compromises fuel delivery consistency, leading to hesitation during acceleration and unpredictable throttle response—critical issues whether you're on the track or the street. The Holley 135-5 is a direct...HLY135-5- SKU:
- HLY135-5
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 135-5
$6.04 -
Holley Diaphragm Assembly 135-10
HOLLEY
$14.65A worn or deteriorated accelerator pump diaphragm will compromise your carburetor's fuel delivery and throttle response—two things you can't afford to lose on the track or at the strip. This Holley Diaphragm Assembly delivers reliable, consistent...HLY135-10- SKU:
- HLY135-10
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 135-10
$14.65 -
AED 50cc Pump Diaphragms (10pk) 5337X
ADVANCED ENGINE DESIGN
$68.7350cc Pump Diaphragms (10pk) Accelerator Pump Diaphragm 50 cc Rubber Gas Holley Carburetors Set of 10 AED provides top-of-the line accelerator pump diaphragms specifically designed with Holley carburetors in mind. Crafted from the highest quality...AED5337X- SKU:
- AED5337X
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MFG Part #:
- 5337X
$68.73 -
AED 50cc Accelerator Pump Diaphragm 5337
ADVANCED ENGINE DESIGN
$8.5950cc Accelerator Pump Diaphragm Accelerator Pump Diaphragm 50 cc Rubber Gas Holley Carburetors Each AED provides top-of-the line accelerator pump diaphragms specifically designed with Holley carburetors in mind. Crafted from the highest quality...AED5337- SKU:
- AED5337
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MFG Part #:
- 5337
$8.59 -
AED 30cc Accelerator Pump Diaphragm 5335
ADVANCED ENGINE DESIGN
$5.5830cc Accelerator Pump Diaphragm Accelerator Pump Diaphragm 30 cc Rubber Gas Holley Carburetors Each AED provides top-of-the line accelerator pump diaphragms specifically designed with Holley carburetors in mind. Crafted from the highest quality...AED5335- SKU:
- AED5335
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- MFG Part #:
- 5335
$5.58
