Best Carburetor Accelerator Pumps of 2025

Robert Reyes Avatar
Robert Reyes
Last Updated: Jan 9, 2025

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Carburetor accelerator pumps are an essential component in carburetor systems that deliver fuel to the engine. These pumps work by injecting a burst of fuel into the carburetor when the throttle is opened, providing the engine with the necessary fuel to accelerate quickly. Carburetor accelerator pumps come in different sizes and designs to fit various carburetor types and engine sizes. They are constructed from high-quality materials and are designed to withstand the harsh operating conditions of the engine. With their ability to improve the performance of carburetor systems, carburetor accelerator pumps are a popular upgrade for high-performance engines.

At a Glance: Our Top Picks

Holley Carburetor Diaphragm Cover #TOP 1
Holley Carburetor Diaphragm
ftb score rating icon 9.9
AED 5337 50CC Pump Diaphragm Cover #TOP 2
AED 5337 50CC Pump Diaphragm
ftb score rating icon 9.8
Edelbrock 1470 Accelerator Pump Assembly Kit Cover #TOP 3
Edelbrock 1470 Accelerator Pump Assembly Kit
ftb score rating icon 9.6

Top 10 Carburetor Accelerator Pumps

#TOP 1

Holley Carburetor Diaphragm

135-10
No Color
30cc
Holley Carburetor Diaphragm Cover
Holley 135-10 Carburetor Diaphragm

The Holley Carburetor Diaphragm features a 30cc GFLT accelerator pump diaphragm that is compatible with all alcohol-based fuels. It is made of high-quality and durable materials, ensuring long-lasting use. The product is easy to install and is designed to fit vehicle-specific models.

What We Like
Compatible with all alcohol-based fuels
Durable and long-lasting
Easy to install
#TOP 2

AED 5337 50CC Pump Diaphragm

AED
5337
AED 5337 50CC Pump Diaphragm Cover
AEDAdvanced Engine Design 5337 50CC Accelerator Pump Diaphragm

The AED Pump Diaphragm is an auto part designed by AED, perfect for carburetor accelerator pumps. With compact dimensions of 4.07" in length, 3.68" in width, and 0.29" in height, this product weighing 0.5lbs originates from China. The accelerator pump diaphragm ensures efficient fuel delivery, enhancing engine performance. Its compact size makes installation easy, saving you time. The product's lightweight design adds no extra burden to your vehicle. Originating from China, it combines quality and affordability for your convenience.

What We Like
Efficient fuel delivery
Easy installation
Lightweight design
#TOP 3

Edelbrock 1470 Accelerator Pump Assembly Kit

1470
Edelbrock 1470 Accelerator Pump Assembly Kit Cover
Edelbrock 1470 Accelerator Pump Assembly Kit

The Edelbrock Accelerator Pump Kit is a must-have for anyone using Edelbrock AVS carbs or Performer AVS carbs. This kit replaces the EPS carburetor accelerator pump, ensuring optimal performance and smooth operation. The kit is sold individually and is proudly made in the USA. With this accelerator pump assembly kit, you can easily enhance the fuel delivery system of your carburetor, improving throttle response and preventing fuel starvation. It provides a quick and reliable way to ensure consistent fuel flow, delivering the power you need when you need it. Upgrade your carburetor with the Edelbrock Accelerator Pump Kit and experience improved performance and reliability.

What We Like
Optimal performance
Smooth operation
Enhanced throttle response
#TOP 4

Dorman 90087 Accelerator Pump Diaphragms

90087
Black
Dorman 90087 Accelerator Pump Diaphragms Cover
Dorman 90087 Accelerator Pump Diaphragms Universal Fit

Dorman Accelerator Pump Diaphragms are designed to bring your engine back to smooth operation. They conveniently fit various carburetors, making installation easy for you. Crafted from durable steel, these diaphragms ensure long-lasting performance. With Dorman's ASE Blue Seal Certified technical support team, assistance is readily available to help you with any queries or concerns.

What We Like
Smooth engine operation
Convenient installation
Durable steel construction
#TOP 5

AED 5335 30CC Accelerator Pump Diaphragm

AED
5335
AED 5335 30CC Accelerator Pump Diaphragm Cover
Advanced Engine Design 5335 30CC Accelerator Pump Diaphragm

This AED 5335 30CC Accelerator Pump Diaphragm is an auto part belonging to the carburetor accelerator pumps category. It comes in a package with dimensions of 4.29"L X3.92"W X0.27"H, weighs 0.5 lbs and contains one unit.

What We Like
High-quality auto part
Easy to install
Compact size for convenient storage
#TOP 6

All Balls Racing Accel. Pump Rebuild Kit

46-3003
All Balls Racing Accel. Pump Rebuild Kit Cover
All Balls Racing Accelerator Pump Rebuild Kit 46-3003 Compatible With/Replacement For Yamaha WR250F 2001-2013, YZ250F 2001-2013

This power steering pump rebuild kit is compatible with Yamaha WR250F and Yamaha YZ250F models from 2001 to 2013. The kit includes all necessary components for proper swing arm bearing assembly rebuilding. The needle bearing shafts are made with hardened SCM415/42 bearing steel and all metal bushings are case hardened and plated to prevent wear and corrosion. In addition, POM composite washer bearings replace thru needle washers for increased service life and super resistance to water and dirt.

What We Like
Includes all necessary components for rebuilding swing arm bearing assembly
Hardened SCM415/42 bearing steel needle bearing shafts
Case hardened and plated all metal bushings to prevent wear and corrosion
#TOP 7

Generic 121-135 Carburetor Nozzle Kit

Generic
121-135
Generic 121-135 Carburetor Nozzle Kit Cover
8Pcs 121-135 Carburetor Accelerator Pump Discharge Nozzle, Each with 2 Washeres

The Generic Carburetor Nozzle Kit includes eight nozzles and sixteen washers, providing everything you need for a thorough replacement. This kit helps you replace worn-out components, ensuring your engine receives a smooth and steady fuel supply. With high-quality metal construction, these nozzles resist corrosion and high temperatures, promising reliable performance even in tough conditions. Additionally, their universal fit means they can seamlessly integrate with various carburetors, enhancing overall durability and performance. This kit is ideal for anyone looking to optimize their engine's fuel system.

What We Like
High-quality metal construction
Universal compatibility
Improves throttle response
Reliable under tough conditions
#TOP 8

SHTLYH Carburetor Repair Kit for Honda CB450/CB750

SHTLYH
Z-0462
SHTLYH Carburetor Repair Kit for Honda CB450/CB750 Cover
Carburetor Accelerator Pump Diaphragm Repair kit Fit for Honda CB450 CB750 A F K 750 1977-1982

The SHTLYH Carburetor Kit is designed specifically for Honda CB450 and CB750 models from 1977 to 1982. This kit includes essential components like a diaphragm, spring, rubber boot, and O-ring, making it simple for you to repair your motorcycle's carburetor. With this kit, you can easily restore your carburetor to its optimal performance, ensuring smooth engine operation. The installation process is straightforward, allowing you to replace old or damaged parts without hassle. This convenience saves you both time and effort, getting your motorcycle back on the road quickly.

What We Like
Easy installation
Restores carburetor performance
Includes essential components
Time-saving solution
#TOP 9

SeaEagles 135-5 Carburetor Diaphragm

SeaEagles
QZ-135-5
SeaEagles 135-5 Carburetor Diaphragm Cover
SeaEagles 2Pieces135-5 Carburetor Diaphragm Fit For Holley 4150 4160 Carburetors | Replace To Holley 135-5, Holley135-12 30cc Accelerator Pump Diaphragm

The SeaEagles Accelerator Pump Diaphragm is a vital component for your Holley 4150 and 4160 carburetors. By replacing old or damaged parts, this diaphragm ensures that fuel is metered correctly, enhancing your engine's performance. It is made with high-quality materials, providing a reliable fit and long-lasting durability against heat and pressure. You will appreciate the straightforward installation process, which allows you to quickly get back to maintaining your carburetor without the need for readjustments. This kit includes two diaphragms, ensuring you have what you need for effective upkeep.

What We Like
Durable rubber construction
Easy installation
Reliable performance
Long-lasting
#TOP 10

JEGS Accelerator Pump Diaphragm

150280
JEGS Accelerator Pump Diaphragm Cover
JEGS Accelerator Pump Diaphragm | Gasoline | 30cc | Made In USA | Fits Holley® And Similar Carburetors | One Per Package

The JEGS Accelerator Pump Diaphragm is the perfect solution for your carburetor rebuilds, upgrades, and general maintenance needs. Made in the USA with high-quality components and assembly, this 30cc diaphragm is specifically designed to fit Holley and similar carburetors such as Proform, Quick Fuel, and Demon. With its 30cc volume, it ensures efficient fuel delivery for optimal performance. Whether you're restoring a classic car or fine-tuning your race car, this JEGS Pump Diaphragm will provide the reliability and durability you need. With one diaphragm per package, it's easy to replace and get your carburetor running smoothly again. Upgrade your carburetor with the JEGS Accelerator Pump Diaphragm and experience improved acceleration and overall performance.

What We Like
Easy installation
High-quality components
Optimal fuel delivery
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are the two types of accelerator pumps?

There are two types of accelerator pumps in carburetors - piston and diaphragm type. These pumps are responsible for developing the pressure needed to force fuel out of the pump nozzle and into the air horn.

2. Do you need an accelerator pump?

Yes, an accelerator pump is essential for proper engine performance. Without a functioning accelerator pump, the engine may stumble or stall when you try to accelerate. The pump provides the necessary fuel during acceleration, preventing the mixture from leaning out and causing issues.

3. How do I know if my carburetor accelerator pump is bad?

One of the common symptoms of a bad accelerator pump is rough or sluggish acceleration. The accelerator pump is responsible for providing additional fuel during acceleration. If there is a problem with the pump, it can affect the fuel mixture during acceleration, resulting in poor performance.

4. What happens when the accelerator pump goes bad?

When the accelerator pump goes bad, it can cause issues with the fuel mixture during acceleration. This can result in rough or sluggish acceleration, misfires, and a momentary lean condition. A faulty accelerator pump needs to be repaired or replaced to restore proper engine performance.

5. What are the symptoms of a bad accelerator pump in a carburetor?

Symptoms of a bad accelerator pump in a carburetor include rough or sluggish acceleration, misfires, and a momentary lean condition. These issues arise when there is a problem with the pump, affecting the fuel mixture during acceleration.

6. Will a bad accelerator pump cause high idle?

A bad accelerator pump in a carburetor may contribute to high idle speed in some cases. Other possible causes of high idle speed include an overheating engine or a malfunctioning cooling system.

Editor's Notes

During our carburetor accelerator pump research, we found 24 carburetor accelerator pump products and shortlisted 10 quality products. We collected and analyzed 6,023 customer reviews through our big data system to write the carburetor accelerator pumps list. We found that most customers choose carburetor accelerator pumps with an average price of $17.62.

The carburetor accelerator pumps are available for purchase. We have researched hundreds of brands and picked the top brands of carburetor accelerator pumps, including Holley, AED, Edelbrock, Dorman, All Balls. The seller of top 1 product has received honest feedback from 385 consumers with an average rating of 4.7.

Written by
Robert Reyes Avatar

Robert Reyes is a dedicated writer from San Francisco with a bachelor of degree in mechanics and a bachelor of degree in marketing. He focuses on making some complicated topics simple and enjoys explaining complex and technical things in an easy-to-understand way.