Fuel Bowl Kit, Ultra XP Aluminum, Center Hung Float Style
Ultra XP Aluminum Fuel Bowl Kit. Fits models 4150, 4160 & 4500. (Will require a .250" longer fuel line). Black anodized finish

  • 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
  • Fuel bowl has 1/4 -16 fuel inlet threads (will not accept standard steel fittings) 
Details
Carburetor Application: Holley, Holley 4150, Holley 4500
Color/Finish: Gray, Polished
Float Hung Style: Center Hung
Location: Secondary
Material: Aluminum

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Fuel Bowl Kit, Ultra XP Aluminum, Center Hung Float Style
Ultra XP Aluminum Fuel Bowl Kit. Fits models 4150, 4160 & 4500. (Will require a .250" longer fuel line). Black anodized finish

  • 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
  • Fuel bowl has 1/4 -16 fuel inlet threads (will not accept standard steel fittings) 
Details
Carburetor Application: Holley, Holley 4150, Holley 4500
Color/Finish: Gray, Polished
Float Hung Style: Center Hung
Location: Secondary
Material: Aluminum

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Share your experiences with other customers.


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Holley® has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR® Cup team and nearly every NHRA® Pro–Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies we can give you the edge you need over the competition!