$4,570.00 ? USED Mercruiser Magnum 502 with BW Gearbox quantity Add to cart Categories: INBOARD AND STERNDRIVES USED Description Reviews (0) 3 x Mercruiser Magnum 502 415 HP EFI engines with Borg Warner 1:1 gearboxes Never run since full rebuild. New stainless steel water cooled exhaust manifolds. Reviews There are no reviews yet. Be the first to review “? USED Mercruiser Magnum 502 with BW Gearbox” Cancel replyYour email address will not be published. Required fields are marked *Your Rating Rate… Perfect Good Average Not that bad Very Poor Your ReviewName * Email * Save my name, email, and website in this browser for the next time I comment.