COMPLETE PINION KIT 1.87:1 15/28 43-44104T2

Function and technical context

This pinion kit constitutes the complete set of marine transmission gears, responsible for transferring power from the crankshaft to the propeller with the 1.87:1 reduction ratio. The pinions work in the hydrostatic transmission system, where the 15-tooth drive gear drives the 28-tooth driven gear, reducing engine revolutions and multiplying output torque. This is a critical component to ensure the boat reaches optimal cruising speeds without overloading the engine; Its wear or breakage causes loss of traction, abnormal vibrations in the transmission and, in extreme cases, the inability to steer the boat.

When to replace this part?

Symptoms of sprocket wear include metallic or grinding noise from the gearbox, difficulty shifting gears, propeller slippage under load, and vibrations transmitted to the hull during navigation. Although marine gears are designed for long life, it is advisable to inspect them every two seasons of intensive boating; The preventive replacement of the complete kit avoids progressive damage to the transmission case and costly repairs in navigation. Given the critical importance of this component for safety at sea, any change in the behavior of the transmission should be evaluated immediately in a specialized workshop.

Mercury and MerCruiser engine compatibility

Compatible Mercury Mariner Engines

Equivalent manufacturer part numbers