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The MC should be the same. The booster depends on the serial number. The early style will have a straight rod through the firewall. The later will have a much shorter rod and a lever/pivot to the brake pedal. It wont matter if its 150 or 250 as far as I know.
yeah. the f150's and some 250's came with single piston calipers, so they will have the same parts, but some f250's came with dual piston calipers, and for sure the m/c is different. the dual piston m/c has both lines on the drivers side and the single piston has a hole on each side iirc.
BTW, personally I wouldnt put a 150 or 250 booster on the Crew when a 350 booster and MC arent much more money and will stop that big heavy truck much better.
i whole heartedly dis-a-****ing-gree with you sir. there is a single and dual piston m/c. obviously the dual is valved(or whatever) differently to move more fluid. my parts guy brought out both to show me before i bought mine a few months back. :flipoff:
So i looked online and there are two different boosters. One for single piston and one for dual piston calipers. The factory F-350 unit on the crew has the long flat rod. The 4 spd pedals i put in use the short rod. I have a new master/booster here but they are from a bronco.