Andrew Duane writes: > AFAIK, the "BX" versus "BV" at the end referred to running upgrades of > the part. That is, when a beefier version, or one with a better mounting > hole or extra washer or something came out, it got a new letter at the > end. I thought the "X" suffix stood for "exchange" -- a remanufacturerd part that requires a core return. -Ti