Best Southwest Speed Carburetor Accelerator Pumps in 2026

Carburetor Diaphragm

50 CC GFLT

GFLT Diaphragms Are Compatible For Use w/All Alcohol Base Fuels

Carburetor Diaphragm

Brand New Holley 650 CFM Classic Double Pumper Carburetor, Shiny Aluminum, Electric Choke, Model 4150, Mechanical Secondaries, Compatible with Gasoline (Part #0-4777SAE)

The Double Pumper is designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall & low rear end gears. It features dual accelerator pumps for additional fuel under initial acceleration, mechanical secondaries for great performance, dual feed fuel inlets for constant high volume fuel delivery & electric choke for easy control of engine warm up.

Features: Shiny finish | Optimized street/strip calibration that works out-of-the-box | Electric choke for precise cold start control | Dual accelerator pumps for additional fuel under initial acceleration | Dual feed fuel inlets for constant high volume fuel delivery | Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing | 100% wet-flow tested by Holley

Carburetor Diaphragm

50 CC accelerator pump diaphragm

Black rubber construction

Brand New Performance Carburetor,Shiny Finish with Aluminum Construction, 500 CFM, 2 Barrel Carburetor, with Manual Choke (Part #0-4412SA)

Features: Aluminum construction and vibratory polished for good looks | Intended as stock performance replacement for 2-bbl street applications. Also a mandated carb for some oval track racing sanctioning bodies | Manual (Cable driven, hand operated) choke for precise cold start control | 50cc accelerator pump for additional fuel under initial acceleration

Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required | Power valve blow-out protection | 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

Brand New Holley 750 CFM Classic Double Pumper Carburetor, Shiny, Manual Choke, Model 4150, Mechanical Secondaries, Compatible with Gasoline (Part #0-4779S)

The Double Pumper is designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall & low rear end gears. It features dual accelerator pumps for additional fuel under initial acceleration, mechanical secondaries for great performance, dual feed fuel inlets for constant high volume fuel delivery & manual choke for easy control of engine warm up.

Features: Optimized street/strip calibration that works out-of-the-box | Manual choke (Cable driven, hand operated) for precise cold start control | 4 corner idle allows you to precisely control your idle system | Dual accelerator pumps for additional fuel under initial acceleration | Dual feed fuel inlets for constant high volume fuel delivery | For lightweight vehicles w/ manual trans or automatics with high stall & low gearing | 100% wet-flow tested by Holley

Brand New Holley 650 CFM Street HP Carburetor, Shiny Aluminum, No Choke, Model 4150, Mechanical Secondaries, Compatible with Gasoline (Part #0-82651SA)

The Street HP features the contoured main body from the 4150 HP & has a tumble polished shiny finish & screw in air bleeds for precision tuning capabilities. The metering system includes a timed spark port for a vacuum advance distributor & is calibrated for a hot street/strip engine setup for outstanding throttle response & drivability. A street HP base plate is used so there are plenty of vacuum ports for power brakes, PCV, etc.

Features: Optimized street/strip calibration that works out-of-the-box | Contoured venturii inlet offers balanced airflow for increased HP | Screw in air bleeds for precision tuning capabilities | 4 corner idle for precise idle control | Mechanical secondaries for awesome tire turning performance | Dual accelerator pumps for additional fuel under initial acceleration | Dual feed fuel inlets for constant high volume fuel delivery | Compatible with GM, Chrys. & Ford A/T kickdown linkage

Brand New Holley 650 CFM Classic Double Pumper Carburetor, Electric Choke, Model 4150, Mechanical Secondaries, Compatible with Gasoline (Part #0-4777CE)

The Double Pumper is designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall & low rear end gears. It features dual accelerator pumps for additional fuel under initial acceleration, mechanical secondaries for great performance; dual feed fuel inlets for constant high volume fuel delivery & electric choke for easy control of engine warm up.

Features: Gold Dichromate finish for corrosion resistance & classic Holley looks | Optimized street/strip calibration that works out-of-the-box | Electric choke for precise cold start control | Mechanical secondaries for awesome tire turning performance | Dual accelerator pumps for additional fuel under initial acceleration | Dual feed fuel inlets for constant high volume fuel delivery

Brand New Holley 650 CFM Classic Double Pumper Carburetor, Shiny, Manual Choke, Model 4150, Mechanical Secondaries, Compatible with Gasoline (Part #0-4777S)

The Double Pumper is designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall & low rear end gears. It features dual accelerator pumps for additional fuel under initial acceleration, mechanical secondaries for great performance, dual feed fuel inlets for constant high volume fuel delivery & manual choke for easy control of engine warm up.

Features: Shiny finish | Optimized street/strip calibration that works out-of-the-box | Manual choke (Cable driven, hand operated) for precise cold start control | Dual accelerator pumps for additional fuel under initial acceleration | Dual feed fuel inlets for constant high volume fuel delivery | Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing | 100% wet-flow tested by Holley

Gold Dichromate finish for corrosion resistance and classic Holley looks

Optimized street/strip calibration that works out-of-the-box

Manual choke (Cable driven, hand operated) for precise cold start control

Optimized street/strip calibration that works out-of-the-box

Manual choke (Cable driven, hand operated) for precise cold start control

Mechanical secondaries for awesome tire turning performance

Brand New Holley 750 CFM Classic Double Pumper Carburetor, Gold Dichromate, Electric Choke, Model 4150, Mechanical Secondaries, Compatible with Gasoline (Part #0-4779CE)

The Double Pumper is designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall & low rear end gears. It features dual accelerator pumps for additional fuel under initial acceleration, mechanical secondaries for great performance, dual feed fuel inlets for constant high volume fuel delivery & electric choke for easy control of engine warm up.

Features: Gold Dichromate finish for corrosion resistance & classic Holley looks | Optimized street/strip calibration that works out-of-the-box | Electric choke (Cable driven, hand operated) for precise cold start control | 4 corner idle allows you to precisely control your idle system | Dual accelerator pumps for additional fuel under initial acceleration | Dual feed fuel inlets for constant high volume fuel delivery | 100% wet-flow tested by Holley

Brand New Holley Aluminum Marine Carburetor, 500 CFM, Hard Core Grey Finish, Electric Choke, 2300, Compatible with Gasoline (Part #0-80402-2).

All Holley Marine Carburetors are designed to meet Coast Guard specifications. A marine carburetors fuel metering system is calibrated to compensate for unique engine loads found on boats. The J-style vent tubes direct fuel/fumes back into the carburetor for safe operation while on rough waters.

The aluminum Holley 0-80402-2 Marine carburetor is designed with a universal calibration good for small cubic inch marine engines where a 2300 model 2BBL with electric choke is required.

Brand New Holley 950 CFM Aluminum Street HP Carburetor, Polished Finish, Mechanical Secondaries, 1.563" Venturii, Compatible with 4150 Model (Holley Part #0-82951SA)

Features an aІuminum contoured main body design taken from the race winning 4150 HP, a tumble polished shiny finish & screw in air bleeds for precision tuning capabilities. The metering system includes a timed spark port for a vacuum advance distributor & is calibrated for a hot street/strip engine setup for outstanding throttle response, drivability & max performance.

Features: AІuminum construction for weight savings | Optimized street/strip calibration | Contoured venturii inlet offers balanced airflow for increased HP | Screw in air bleeds for precision tuning capabilities | 4 corner idle for precise idle control | Mechanical secondaries | Compatible with GМ, Chrуsler & F𐐬rd A/T kickdown linkage. Additional parts may be required

Brand New Holley Performance Carburetor, 2BBL, 350 CFM, Gold Dichromate, Manual Choke, 2300 Model, Compatible with Gasoline (Part #0-7448)

The 0-7448 is designed as a stock replacement for 2BBL street applications as well as being mandated for some oval track racing sanctioning bodies. Whether you are looking for a replacement carburetor to replace your tired and worn factory 2BBL or one to push you to the finish line on Saturday night, the Holley 0-7448 Performance 2BBL is the perfect choice.

Features: Gold Dichromate finish for corrosion resistance and classic Holley looks | Intended as stock performance replacement for 2-bbl street applications. Also a mandated carb for some oval track racing sanctioning bodies | Manual (Cable driven, hand operated) choke for precise cold start control | 30cc accelerator pump for additional fuel under initial acceleration | Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required

Brand New Holley 500 CFM Performance Carburetor, with No Choke (Part #0-4412CT)

Features: Gold Dichromate finish for corrosion resistance & classic Holley looks | Calibrated specifically for circle track use | No choke for unobstructed airflow | 50cc accelerator pump for additional fuel under initial acceleration | Ford A/T kickdown | Power valve blow-out protection | 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

Specs: Barrels: 2 | Booster: Down Leg | CFM: 500 | Choke: None | Emission Code: 3 | Finish: Gold Dichromate | Fuel: Gasoline | Fuel Inlet: Single | Material: Zinc | Model: 2300 | Primary Main Jet: 73 | Primary Power Valve: 5.0 | Primary Pump Nozzle Size: 28 | Product Type: 2300 Model Carburetor | Secondaries: None | Supercharged Application: No | Throttle Bore: 1.688" | Venturii Size: 1.376"

Brand New Holley 1050 CFM Classic Dominator Carburetor, Gold Dichromate, 2 Circuit, Compatible with Gasoline (Part #0-8082-1).

The original Dominator took carburetion to another level in 1969 when it was developed for NASCAR racing. Holley Dominator carburetors are designed specifically for making top end horsepower and torque in high end racing engines and are the perfect carburetor for the budget minded racer.

Classic Dominator carburetors feature an aluminum main body with a contoured venturi inlet for balanced airflow and increased horsepower, screw in air bleeds for easy fine tuning, high flow metering system with race calibrations and annular boosters. Other features include Dominator fuel bowls to allow plumbing from either side, high flow needle and seats, 50cc accelerator pumps, and 4 corner idle.

Brand New Holley Performance Carburetor, 2BBL, 500 CFM, Gold Dichromate, No Choke, 2300 Model, Compatible with Gasoline (Part #0-80583-1)

The 0-80583-1 carburetor shares the hugely successful features of the original 4412, but w/ changes aimed directly at circle track cars. The choke assembly has been removed for unobstructed airflow & utilizes the HP metering block, 30cc accelerator pump, welded throttle lever, screw in air bleeds & stainless throttle plates, plus it has been specially calibrated for circle track racing use. It comes out of the box ready to run w/ less modifying & less tuning at the track.

Features: Gold Dichromate finish for corrosion resistance & classic Holley looks | Calibrated specifically for circle track use | No choke for unobstructed airflow | 30cc accelerator pump for additional fuel under initial acceleration | HP metering block for improved fuel flow | Screw in air bleeds for precision tuning capabilities | Welded throttle lever & Power valve blow-out protection | 100% wet-flow tested by Holley technicians, arrives ready to run

Brand New Holley 500 CFM Performance Carburetor, with Manual Choke, Gold Dichromate Finish (Holley Part #0-4412C)

Features: Gold Dichromate finish for corrosion resistance & classic Holley looks | Intended as stock performance replacement for 2-bbl street applications. Also a mandated carb for some oval track racing sanctioning bodies | Manual (Cable driven, hand operated) choke for precise cold start control | 50cc accelerator pump for additional fuel under initial acceleration | Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required |

Power valve blow-out protection | 100% wet-flow tested by Holley technicians to assure it arrives ready to run!

Brand New Holley 850 CFM Aluminum Street HP Carburetor, Polished Finish, Mechanical Secondaries, 1.563" Venturii, Compatible with 4150 Model (Holley Part #0-82851SA)

Features an aІuminum contoured main body design taken from the race winning 4150 HP, a tumble polished shiny finish & screw in air bleeds for precision tuning capabilities. The metering system includes a timed spark port for a vacuum advance distributor & is calibrated for a hot street/strip engine setup for outstanding throttle response, drivability & max performance.

Features: AІuminum construction for weight savings | Optimized street/strip calibration | Contoured venturii inlet offers balanced airflow for increased HP | Screw in air bleeds for precision tuning capabilities | 4 corner idle for precise idle control | Mechanical secondaries | Dual accelerator pumps for additional fuel under initial acceleration | Dual feed fuel inlets for constant high volume fuel delivery