Description
Part Number: 0-4781S
Holley 4150 Double Pumper 850 CFM Carburetor – Tumble Polished
Engineered for high-performance street and drag strip applications, the Holley 0-4781S Double Pumper carb delivers maximum throttle response and reliable fuel delivery for high-horsepower V8 engines.
Key Performance Features
- ☑ 850 CFM airflow capacity optimized for high-RPM street/strip calibrations
- ☑ Mechanical secondaries delivering instant throttle response and maximum acceleration
- ☑ Dual accelerator pumps (30cc) engineered to eliminate low-end hesitation
- ☑ Four-corner idle system allowing precise idle circuit tuning
- ☑ Tumble polished shiny finish providing excellent engine bay aesthetics and corrosion resistance
- ☑ Dual feed fuel inlets for high-volume, uninterrupted fuel delivery
- ☑ Manual cable-driven choke for driver-controlled engine warm-ups
- ☑ Power valve blowout protection and 100% wet-flow tested by Holley technicians
Technical Specifications
| Brand | Holley |
|---|---|
| Manufacturer Part Number | 0-4781S |
| Carburetor Model | 4150 Double Pumper |
| Airflow Rating | 850 CFM |
| Number of Barrels | 4-Barrel |
| Flange Pattern | Square Bore (5 3/16″ x 5 5/8″) |
| Secondary Type | Mechanical Secondary |
| Choke Type | Manual Choke |
| Fuel Inlet Style | Dual Feed Inlet (9.500″ Center-to-Center) |
| Finish | Tumble Polished Silver |
| Primary Jet Size | 80 |
| Secondary Jet Size | 80 |
| Primary Discharge Nozzle | 0.031″ |
What’s Included in the Box
- 1x Holley 0-4781S 850 CFM Double Pumper Carburetor
- 1x Square Bore Base Flange Gasket
- 1x Air Cleaner Gasket
- 1x Mounting Hardware & Fuel Fitting Pack
As an official UK stockist of Holley performance components, JP Racing ensures you receive genuine, factory-tested fuel system hardware backed by technical support and fast UK delivery.
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