• For use with electric fuel pumps only
• Requires a return line from the regulator back to the fuel tank/cell
• Fits most dual feed Holley carburetors with 5/8-18 inverted flare bowl ports including 4150, 4160 and 4500 series (AVAILABLE FOR CARBS WITH 3/4-16 O-RING PORTS BY SPECIAL ORDER)
• Distance between feed tubes is adjustable from 8-3/16" to 11-3/4"
• Clears manual and electric chokes
• Clears most air cleaners including drop base
• Bypass regulator eliminates pressure creep and vapor lock
• Decreases pump noise and increases pump life compared to dead-head style regulator
• Large (.375" diameter) internal regulator orifice reduces flow restriction
• Anodized housing and stainless steel plunger for corrosion resistance
• Special diaphragm allows use of gasoline and/or ethyl alcohol
• Adjusts from 3 to 10 psi
• Small in size yet works with pumps up to 300 gph
• -6 and -8AN fittings included
• 1/8 NPT gauge port (plug included)

Another first from RobbMc Performance! And, as always, Made in the USA!