Spark Plug Wire Set – Fits Mercruiser 120/140/2.5L/3.0L GM Sterndrive (Replaces 816761A5, 816761Q5) family-yamaha-f15elha Access the Lower Unit: Drain

Access the Lower Unit: Drain the gearcase oil

You will need to provide fresh gear oil separately for lower unit servicing

1 x Exhaust Water Shutter (Replaces 99370A2)

10 lbs) Thread Size 7/16" UNC external

Spark Plug Wire Set – Fits Mercruiser 120/140/2.5L/3.0L GM Sterndrive (Replaces 816761A5, 816761Q5) family-yamaha-f15elha Access the Lower Unit: DrainSpark Plug Wire Set Fits Mercruiser 120 140 2. 5L 3. 0L GM Sterndrive This aftermarket spark plug wire set is designed for Mercruiser GM inline 4 cylinder engines (120, 140, 2. 5L, and 3. 0L) manufactured between 1983 and 1995, including sterndrive applications. It provides a reliable, direct fit replacement to restore ignition performance. This set is a direct replacement for multiple OEM and aftermarket part numbers, including Mercruiser 816761A5,