Lower Unit Drain Screw Gasket – Fits Mercury/Mercruiser All HP (Replaces 12-19183-3, 12-19183K02, 12-19183Q02) 12.5HP 50 in) Internal Shaft Insert

50 in) Internal Shaft Insert Diameter 25 mm (0

Ensure the engine is off and the boat is secured on a trailer or lift before beginning

tightening the bolts in a star pattern to ensure an even seal

Insert it at least 6 inches down the drain

9 4-Stroke 2005–2006 63V-W0078-01 Superseded by 63V-W0078-04-00 Yamaha F15 15 4-Stroke 1998–2005 63V-W0078-01 Superseded by 63V-W0078-04-00 Yamaha T9

Lower Unit Drain Screw Gasket – Fits Mercury/Mercruiser All HP (Replaces 12-19183-3, 12-19183K02, 12-19183Q02) 12.5HP 50 in) Internal Shaft InsertProduct Details This Lower Unit Drain Screw Gasket is designed for a secure, leak free seal on Mercury Marine outboard and MerCruiser stern drive engines. It fits all horsepower models that are equipped with standard 3 8 16 drain and fill screws, ensuring reliable performance and protection for your gearcase. It serves as a direct replacement for multiple OEM and aftermarket parts, including Mercury Marine 12 19183 3, 12 19183K02, 12 19183Q02, and