2 Port Ultra Dominator Fuel Pressure Regulator

Low Pressure 4 to 9 PSI, Boost Reference 1:1

• EFI regulators are adjustable from 40-100 PSI base pressure
• Carbureted regulators are adjustable from 4 to 9 PSI base pressure
• Compatible with gasoline, methanol, and E85* (Compatible with
• 1/8” NPT gauge port
• Designed for use with the Holley Ultra HP and Ultra Dominator Brushless in-line fuel pumps
• Can be referenced on a 1:1 ratio – includes a barb fitting and a -4 AN fitting for reference connection
• 2 port regulators feature a 10 AN O-ring inlet/outlet and return
• 4 port regulators feature a 10 AN O-ring inlet and return with (4) 8 AN O-ring outlets

The Holley Ultra HP and Ultra Dominator billet fuel pressure regulators are part of the Ultra HP and Ultra Dominator brushless fuel systems product line. These regulators can support 3000+ horsepower engines that require high volumes of fuel flow. Both EFI and carbureted versions can be referenced on a 1:1 ratio. They are precision machined from 6061-T6 billet aluminum for strength and durability and feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. Offered in 2 port and 4 port versions for carbureted or EFI pressures, Holley has the regulator to cover your needs!

Instructions for Part# 12-852