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  1. HPOP Pump With and without valve? *15 or *17?

    99-03 7.3L Performance Parts
    I recently swapped out my hpop because i was told it was making noise. :doh: it wasnt the hpop and i put a hpop that a friend gave me which was a new reman. the hpop were i dentical the only diffrence was that the one i put on seem to have like a check valve in the front face and and the...