Used Direct replacement for Mercury Marine Quicksilver original equipment part # 44187 ONLY.
Fits Inboard GM engines that use a 26 spline input shaft transmission.
To use the top mount starter function of this bellhousing, you must have a 14 Inch flywheel that has a rear mounted ring gear.
All front mounted ring gear flywheels must use a bottom mount starter.
Replaces: Mercruiser #s 44187T Aqua Power # 5099; Sierra # 18-2434