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Description
Ultra XP Aluminum Fuel Bowl Kit - Tumble Polished - 134-78SOverview: Ultra XP Aluminum Fuel Bowl Kit. Fits models 4150, 4160 & 4500. (Will require a . 250" longer fuel line). Tumble Polished finish Features: use of o ring fittings Bowls use standard traditional floats, float hangers, screws, accelerator diaphragms, etc. Features Clear Pyrex sight windows on both sides of bowl Fuel trough designed in floor of bowl to route fuel directly to jets & assists to keep jets covered Internal baffling cast into bowl
Overview:
Ultra XP Aluminum Fuel Bowl Kit. Fits models 4150, 4160 & 4500. (Will require a .250" longer fuel line). Tumble Polished finish
Features:
- use of o-ring fittings
- Bowls use standard/traditional floats, float hangers, screws, accelerator diaphragms, etc.
- Features “Clear Pyrex” sight windows on both sides of bowl
- Fuel “trough” designed in floor of bowl to route fuel directly to jets & assists to keep jets covered
- Internal baffling cast into bowl
- 20% more fuel capacity vs. traditional V-Bowls, eliminates fuel starvation & provides consistent air/fuel ratios
- Fuel shelf to greatly minimize fuel aeration & promote more consistent metering
- A threaded drain plug has been incorporated into the bowl
- Bowls offer contoured fuel entry for smooth fuel flow directly to needle & seat assembly
- Bowls can be plumbed from either side
- Material added to key areas (needle & seat, fuel inlets, sight window) for added strength in demanding race environments
- drain plug
- dual sight windows
- baffling
- Increased capacity
- Fuel bowl has 3/4 -16 fuel inlet threads (uses -8 Viton O-ring type fittings) Will not accept standard steel fittings
Application:
| Year | Make | Model | Submodel | Engine Size |
|---|---|---|---|---|
| Universal |
Specs:
| Brand | Holley |
|---|---|
| Emission Code | 5 |
| Finish | Shiny |
| Fuel Bowl Style | Center Hung |
| Material | Aluminum |
| Model | 4150/4500 |
| Product Type | Replacement Fuel Bowl Kit |
| Warning | California Proposition 65 |
| Warranty | Limited 90 Day |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.9 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 1
Tips broke in the binding post
Size: 12 Pairs / 24 pcs, Size: 12 Pairs / 24 pcs
UPDATE:
Two tips broke off when unplugging them from the binding post and are now lodged in. Inexcusable and an utterly poor product.
Solid connection in the binding post with no wobble or wiggle. They require some force to insert into the binding post, but once they're in they remain snug. I also tried removing and reinserting a few times and the connection remained solid. I've used other plugs in the past that have a softer tip and easily deform after one or two insertions. These do not have that issue.
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Reviewed in the United States on January 11, 2026
★★★★★ 5
Great plugs
Size: 2 Pairs / 4 pcs
These are great plugs! Worked like it should!
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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