FROM WHAT I HAVE FOUND OUT FROM CUMMINS 2YEARS AGO OR SO DODGE BUYS THE MOTORS FROM CUMMINS WITH NO WARRANTY AND CUMMINS WILL DO NO WARRANTY WORK ON THEM -DODGE MUST DO IT AND UNDER WHAT EVER CHRYSLER WARRANTY THERE IS. AS FOR THE BLOW BY HAVE 2 OF THESE A 91 ... Login to read more.