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these regulators allow you to stack them together to control multiple pressures with a single fuel pump
It has a 9" deep by 7-1/2" long sump giving it a 7 quart system capacity
a steeply-rising ramp shape will give a fast
Includes two seat tracks
250-550 lb/in Spring Rate
Holley Ultra XP Replacement Main Body 950 CFM HC Gray HB22031SPL these regulators allow you toWe all know things can happen at the track. While tuning your ride in for the perfect pass, screw holes could become worn or cross threaded. Rather than replacing your entire carburetor, Holley offers replacement main bodies for your Ultra XP. These aluminum main bodies are the identical units that we use to build the Ultra XP carburetors that you already know and love. Offered in sizes ranging from 600 cfm 950 cfm, Holley has you covered. SPECS: