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Description
750 CFM Aluminum Double Pumper Carburetor w/ Electric Choke - 0-4779SAEOverview: Holley upgraded their two most popular sizes of double pumper with electric chokes. The 650 and 750 CFM models are available in the classic zinc and shiny polished finishes. Holley Double Pumper carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors. From their roots as the premier carburetor on many factory muscle cars to
Overview:
Holley upgraded their two most popular sizes of double pumper with electric chokes. The 650 and 750 CFM models are available in the classic zinc and shiny polished finishes.
Holley Double Pumper® carburetors are a perfect performance upgrade for hot street cars and race vehicles. Double Pumper carburetors are an American icon when it comes to performance carburetors. From their roots as the premier carburetor on many factory muscle cars to powering thousands of vehicles across the finish line, the Double Pumper is a great choice whether you are burning up the street or the quarter mile. The Double Pumper is designed for use on lightweight vehicles with a manual transmission or an automatic transmission with a high stall and low rear end gears. The Double Pumper is available in a gold dichromate or tumble polished shiny finish and 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 and an electric choke for easy control of engine warm up. Don't trust your performance to just anyone, Holley is the only modular carburetor company that has been in business for over 100 years and has powered every NASCAR champion since the 60's.
Features:
- Shiny finish for corrosion resistance and 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
- Intended for lightweight vehicles w/ manual trans or automatics with high stall & low gearing
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
- 4 corner idle allows you to precisely control your idle system
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Barrels | 4 |
|---|---|
| Booster | Straight |
| Brand | Holley |
| Carburetor Use | Performance and Race |
| CFM | 750 |
| Choke | Electric |
| Condition | New |
| Emission Code | 3 |
| Finish | Shiny |
| Fuel | Gasoline |
| Fuel Inlet | Dual |
| Marine Use | No |
| Material | Aluminum |
| Model | 4150 |
| Primary Main Jet | 70 |
| Primary Power Valve | 6.5 |
| Primary Pump Nozzle Size | 28 |
| Product Type | 4150 Model Carburetor |
| Secondaries | Mechanical |
| Secondary Main Jet | 81 |
| Secondary Pump Nozzle Size | 31 |
| Supercharged Application | No |
| Throttle Bore | 1.688 inch |
| Vacuum Ports | 1 timed (spark) port, 1 full, and 1 PCV port |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 853 reviews
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Product Reviews
★★★★★ 5
Reliable, Fast, and Excellent Print Quality — A Great All-Around Printer
Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN, Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN
I’m extremely happy with this printer and would highly recommend it to anyone looking for a reliable, high-quality device. Setup was quick and straightforward, and it connected seamlessly to both my Wi-Fi and mobile devices. Print quality is excellent—text is crisp, colors are vibrant, and photos come out looking professional. It’s also impressively fast and much quieter than printers I’ve owned in the past. I appreciate the user-friendly interface and the efficient ink usage, which helps keep long-term costs down. Overall, this printer delivers great performance, convenience, and value, making it a fantastic addition to my home office.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
★★★★★ 1
I would rather deal with a dot matrix printer...
Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN
Let's start with the positive - scanner works fine. I am not a huge fan of having to use a separate program to initiate and scan but with that said, the scanner part of this "printer" is decent, fast, clear and has some functionality (two sided capabilities, rotation, etc.) that is appreciated. It would be nice if it would have OCR option so that you don't have to use a separate program to convert but that is just a convenience thing. Well wait, who doesn't like convenience when it seems like this could be a simple option?!
Now for the negative part of this "printer".
Issues:
- 9 times out of 10 it will not print upon command and usually requires me to unplug, wait 30 seconds, plug and restart printing. Simply turning it off and on with the power button usually doesn't solve the problem hence the unplugging. And even unplugging sometimes doesn't do the trick. Don't worry, it will print the document randomly if you don't cancel the print job usually when you least expect it to and have a minor uptick in the heart rate.
- Will not print in black and white (even if selecting the option to print only in B&W) once the color cartridges run out. Yes, it allows you maybe to do this a few times with a warning that it can only do that because the color is out however that is temporary and it will eventually not allow you to print in B&W until you replace the color. Completely ridiculous to me...
- Speaking of color cartridges, these do not last long. I rarely print in color however I have had this printer for less than a year and have replaced once and now have to replace again. Also finding that these color cartridges are hard to find locally at like walmart or target and when in a pinch, that is bad. So as stated above, when you color goes out, need just a straight B&W print job and can't find the cartridges around town - you are S.O.L.
If you are wanting a multi-use "printer" that just scans - this is a decent option. If you are wanting something more than a scanner that prints ink on paper, do not put this in your cart and move on.
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Reviewed in the United States on December 2, 2023
★★★★★ 5
incredible wide format printer
Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN, Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN
I had a WF 4530 that I bought over 10 years ago - that printer was a tank and the ability to scan was HUGE. That printer recently died on me - over a decade with inkjet - with no issues despite long stretches of no use - I can't complain one bit.
I bought the 7820 WF - it's an upgrade in every aspect. Quiet. Fast. Great print quality. Edge to edge printing. Wide format (if/when I need it). I've added a photo to the review of a printout I did using HP photo paper (4x6) to give you an idea of the quality - for home printed inkjet it's (IMO) top of the scale.
One note: Don't use windows 10 or windows 11 drivers - download and install the drivers from Epson - they give you scan to pdf, scan to your computer, and the printout resolution from the windows drivers is horrible - the epson drivers are really needed.
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Reviewed in the United States on June 17, 2023
★★★★★ 5
WAS a good printer
Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN, Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN
I was excited to purchase a printer that could print LARGE prints for my small business.
After 2 months of using this printer, I had to find a company that sold just the replacement chips. My cartridges would be halfway full of ink but printer would throw a code saying ink was out. Now after using this printer for less than 6 months, it will not read any new chips (on brand new cartridges even). When I purchased it on July 16th for under $200, I thought it was a great deal. Now I know they were trying to get rid of their junk printers!!
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Reviewed in the United States on December 27, 2024
★★★★★ 4
Large-format printer, fairly reliable and quick but so-so on ink usage
Style: WF-7820, Set: SINGLE TRAY (250 sheets/FAX/ADF/PRINT/COPY/SCAN
Large-format scanner/printer. Accepts paper from the front (main) cassette OR through a back paper tray if you need to print something on different paper. Individual cartridges for ink. Not particularly economical on ink (and the ink of course is expensive) but the cartridges are individual (one each red, yellow, blue and black) and after a couple years of use, I've NEVER had to clean the print heads - printing is always clean and clear. Has had some issues connecting to wifi so have found the cable connection to the computer is best/more reliable. It's hard to find an absolutely perfect printer but this one comes close. I use it mostly for large scanning/printing as it goes up to 11 x 17 inches. One drawback to note is that after only a short time, the document feeder pulls the documents through crookedly, so scans/prints from the document feeder do NOT come out straight (for both single and double-sided scans.) This model is a few years old so there may be more recent Epson models on the market as of 2026.
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Reviewed in the United States on May 21, 2026
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