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Super 15 25 2-Stroke 1988-1998 99157T2 USA ser# 0B238464 & Up
Carefully remove the bolts securing the thermostat housing cover
Reattach Lower Unit: Guide the driveshaft back into the engine and secure the lower unit with its mounting bolts
aligning the mounting holes and securing with the original bolts
Thermostat Kit 120° – Fits Mercury/Mariner 6-25 HP 2-Stroke (Replaces 14586A3, 75692A9) family-yamaha-40esru Super 15 25 2-Stroke 1988-1998Thermostat Kit 120 Fits Mercury Mariner 6 25 HP 2 Stroke (Replaces 14586A3, 75692A9) This thermostat kit is designed for Mercury and Mariner 2 stroke outboard engines ranging from 6 HP to 25 HP, typically manufactured between 1986 and 1998+. It provides a reliable, direct fit replacement for maintaining optimal engine operating temperature. This kit replaces multiple OEM and aftermarket part numbers, including Mercury 14586A3, 75692A9, 75692A10, and
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