Marine Plug Wire Set for 110, 120 and 140 HP with Conventional Ignition Replaces Mercruiser 84-816761Q5 and OMC 503748. Some older Mercruiser part numbers include 84-816761A5 and 84-813720A5. Fits Mercruiser: 110, 120 (153 cid), 140 (181 cid), 3.0LX with conventional ignition (points). Fits OMC 100,...

Spark plug set 816761Q5 is for use on 4-cylinder MerCruiser engines with conventional points ignition systems (1963 through 1995). The Quicksilver brand is the leader in delivering uncompromising engine oils, parts and accessories to the marine industry for over 65 years. Quicksilver is the premier...