Spark Plug Wire Set – Fits Mercruiser 4-Cylinder 2.5L/3.0L (Replaces 816761A5, 84-816761Q5) 72HP Loosen the alternator or tensioner

Loosen the alternator or tensioner pulley bolts to release tension on the old belt

ensuring it is securely fastened

pressure test the housing to check for leaks before reinstalling on the boat

Features a simple peel-and-apply installation with super-stick adhesive

Spark Plug Wire Set – Fits Mercruiser 4-Cylinder 2.5L/3.0L (Replaces 816761A5, 84-816761Q5) 72HP Loosen the alternator or tensionerProduct Details This Spark Plug Wire Set Fits Mercruiser 4 Cylinder 2. 5L 3. 0L (Replaces 816761A5, 84 816761Q5) is designed for Mercruiser 4 cylinder engines, including models 120, 140, 2. 5L (153 CID), and 3. 0L (181 CID) GM sterndrive motors equipped with conventional points ignition systems (19631995). It serves as a direct replacement for Mercury Mercruiser part numbers 816761A5, 816761Q5, 84 816761Q5, 84 813720A5, and 84 816761K5, as well as