Holley reintroduces the popular 4150 Ultra HP, now engineered for E85 gas. The new 4150 Ultra HP includes: E85 metering blocks, high flow power valve, 130” stainless needle & seats, 50cc secondary accelerator pumps and secondary jet extensions, and ships standard in the exclusive Hard Core Gray hard-anodized finish.

Official Release:

New racers every day are finding E85 as a cheap alternative to race gas and now Holley has raised the bar on E85 race carburetors. Holley’s popular 4150 Ultra HPs are now available with components and calibrations making them ready for ethanol. They’re available in 600, 650, 750, 850 and 950 CFM and all come in the exclusive Hard Core Gray hard-anodized finish – the perfect barrier to the corrosive properties of ethanol fuels.  They have E85 specific metering blocks, high flow power valve, .130” stainless needle & seats, 50cc secondary accelerator pumps and secondary jet extensions installed.

All previous Ultra HP features are also standard such as all aluminum construction for 38% weight savings; large capacity fuel bowls, adjustable billet metering blocks, billet base plates, integrated idle bypass valve, and more.

Features:

• Ethanol-ready, E85 fuel compatible

• Available in 600, 650,750, 850 and 950 CFM

• Includes: aluminum construction, 38% weight savings, large capacity fuel bowls, adjustable billet metering blocks, billet base plates, and integrated idle bypass valve.

• New features: E85 metering blocks, high flow power valve, 130” stainless needle & seats, 50cc secondary accelerator pumps and secondary jet extensions

• Standard in exclusive Hard Core Gray hard-anodized finish