Thermostat Kit (140°F/60°C) – Fits MerCruiser 2.5L & 3.0L (Replaces 59078Q3, 18-3650) 3.6HP Brand Part Number Mercury 78458A1

Brand Part Number Mercury 78458A1 Sierra 18-2760 GLM 89150 Mallory 9-72810

This impeller is compatible with specific Cummins B Series

For Pleasurecraft Marine (PCM) engines

the kit will fit

as it will cause cooling system malfunctions

Thermostat Kit (140°F/60°C) – Fits MerCruiser 2.5L & 3.0L (Replaces 59078Q3, 18-3650) 3.6HP Brand Part Number Mercury 78458A1Product Details This Thermostat Kit (140F 60C) is engineered for MerCruiser 2. 5L (120HP) and 3. 0L (140HP) inline 4 cylinder and 6 cylinder GM engines from 1998 and newer equipped with cast iron exhaust manifolds. It ensures your engine maintains the correct operating temperature for optimal performance and longevity. This kit serves as a direct replacement for a wide range of part numbers from brands including MerCruiser, Sierra, Force, GLM,