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Ships within 48 hours · Estimated delivery Jul 14 - Jul 19
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Description
750 CFM - 4150 - Mechanical Secondaries - Zinc - Gasoline 0-80528-2750 CFM 4150 Mechanical Secondaries Zinc Gasoline Holley HP? carburetors have been the standard in racing carburetors for nearly two decades. Powering the biggest names in NASCAR to the Saturday night racer, HP carburetors are the perfect choice for all types of motorsports. NOTES: Notice Due to the natural color variations of the dichromate plating process, the plating color may vary from casting to casting (within a carburetor) and from carburetor
750 CFM - 4150 - Mechanical Secondaries - Zinc - Gasoline
Holley HP? carburetors have been the standard in racing carburetors for nearly two decades. Powering the biggest names in NASCAR to the Saturday night racer, HP carburetors are the perfect choice for all types of motorsports.
NOTES: Notice - Due to the natural color variations of the dichromate plating process, the plating color may vary from casting to casting (within a carburetor) and from carburetor to carburetor. This is considered normal and is not a cosmetic defect. If you desire a carburetor with no color variation, please shop our black and shiny finish carburetors.
Features:
- Gold Dichromate finish for corrosion resistance
- Optimized race calibration
- Contoured venturri inlet offers balanced airflow for increased horsepower
- Screw in air bleeds for precision tuning capabilities
- Dual 30cc accelerator pumps for additional fuel under initial acceleration
- Dual feed fuel inlets for constant high volume fuel delivery
- 4 corner idle allows you to precisely control your idle system
- Progressive Secondaries for perfect off the line launches
- Stainless steel throttle plates
- Includes notched float and jet extensions
- Calibrated for gasoline
- 100% wet-flow tested by Holley technicians to assure it arrives ready to run!
- Compatible with GM, Chrysler, and Ford A/T kickdown linkage. Additional parts may be required.
Specs:
| Barrel Quantity | 4 |
|---|---|
| Barrels | 4 |
| Body Color | Zinc |
| Body Finish | Zinc |
| Booster | Downleg |
| Booster Design | Downleg |
| Brand | Holley |
| Carburetor Material | Aluminum |
| Carburetor Use | Performance and Race |
| CFM | 750 |
| Choke | None |
| Circuit | 2 |
| Condition | New |
| Cubic Feet Per Minute Rating | 750 |
| Emission Code | 3 |
| Finish | Zinc |
| Flange Type | Square/4150 |
| Fuel | Gasoline |
| Fuel Inlet | Dual |
| Grade Type | Performance |
| Linkage Attached | Yes |
| Marine Approved | No |
| Marine Use | No |
| Material | Aluminum |
| Model | 4150 |
| Mounting Hole Quantity | 4 |
| Primary Jet Diameter | 75 |
| Primary Main Jet | 75 |
| Primary Power Valve | 6.5 |
| Primary Pump Nozzle Size | 31 |
| Product Type | Carburetor |
| Sale Category | Carburetors and Components |
| Secondaries | Mechanical |
| Secondary Main Jet | 75 |
| Secondary Power Valve | 6.5 |
| Secondary Pump Nozzle Size | 31 |
| Spacer Included | No |
| Supercharged Application | No |
| Throttle Bore | 1.688 inch |
| Venturii Size | 1.376 inch |
| 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
4.5 ★★★★★
Based on 1753 reviews
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Product Reviews
★★★★★ 5
Great plugs
Size: 2 Pairs / 4 pcs
These are great plugs! Worked like it should!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 26, 2024
★★★★★ 3
Does the job, easy use, a bit bulky not exactly as described
Size: 12 Pairs / 24 pcs
Bare wire can be intolerable to work with. Banana plugs make a positive secure connection. These plugs are a touch bulky. Nice to not have to deal with small screws. Use as large of gauge wire as possible. The description says no unintentional disconnections. I beg to differ the bite of teeth aren’t as good as described. Used a 16 gauge pure copper speaker wire and a teenager taught me how secure the wire really is by tugging on the wire not the banana plug pulling the wire free. It does the job, it’s not the latest and greatest. If you need easy get these. If you want slim secure banana plugs buy the small screw type.
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Reviewed in the United States on July 3, 2025
★★★★★ 5
GET THEM!!
Size: 12 Pairs / 24 pcs, Size: 12 Pairs / 24 pcs
Fully gold plated inside and out! I initially got the amazon basic connectors for the same price, but was disappointed in the tiny burgundy positive label they had. It was also very dirty inside the connector and it wasn’t gold plated through out the connector. These are excellent in quality and have a bright red ban on the connector! You wont be disappointed and beats out Sewell connectors for the price!
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Reviewed in the United States on January 24, 2025
★★★★★ 2
Decent, but be careful of frequent use.
Size: 12 Pairs / 24 pcs, Size: 12 Pairs / 24 pcs
The looks are very nice, functional if left alone once assembled. After that I would leave them alone otherwise you risk the main male portion just coming loose of the housing, sound quality is decent, nothing to write home about, but again, not very durable. If they could fix that 1 thing, these would be very good buy and value, the rest of each plug is hefty and well made.
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Reviewed in the United States on January 12, 2026
★★★★★ 5
Great Banana Plugs
Size: 6 Pairs / 12 pcs
I recently purchased these FosPower banana plugs to tidy up my speaker wiring, and they’ve been a significant improvement over bare wire ends. Installation is straightforward: strip the wire, loosen the two tiny set screws, slide the wire in, tighten everything down, and then screw the barrel back on. Once assembled, the connection feels secure and tight, making it much easier to swap gear around and reducing the risk of stray strands causing a short.
The standout feature of this design is the dual set-screw clamp. It firmly grips the speaker wire without relying on the outer collar to “crush” it in place. I’m using 12-gauge wire, and it holds well for my setup.
Initially, the plugs may fit snugly in some binding posts. Once seated, there’s no wobble, but it might take a bit of extra push the first time.
The set screws are small, so a bit of precision is needed. Use a small flathead screwdriver and don’t over-tighten them.
Overall, these plugs feel well-made, look clean once installed, and fulfill their purpose as banana plugs: making speaker connections quick, neat, and reliable.
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Reviewed in the United States on May 27, 2026