Thermostat Housing with O-Ring Kit – Fits Mercury Marine Verado 135-400 HP (Replaces 892864T04/8M0174561) 125-290HP When you push the key

When you push the key inward while in the "Run" or "Start" position

Product Type Gear Lube Reservoir Fitting Installation Transom Shield Connection 90-degree Housing Material Plastic Housing Color Black Fitting Type Barbed Other Technical Attributes Used with 1/4" ID gear lube hose What’s in the Box

The most common sign is gear lube leaking from the upper drive housing

What drives is this tool compatible with

These high-quality gaskets fit a wide range of 4-stroke and select 2-stroke models

Thermostat Housing with O-Ring Kit – Fits Mercury Marine Verado 135-400 HP (Replaces 892864T04/8M0174561) 125-290HP When you push the keyProduct Details This Thermostat Housing with O Ring Kit is a complete assembly designed for a wide range of Mercury Marine Verado engines. It ensures your engine maintains the correct operating temperature for optimal performance and longevity, fitting L4 and L6 Verado models from 135 HP to 400 HP, manufactured from 2004 to the present. It serves as a direct replacement for Mercury part numbers 892864T04 and 8M0174561, as well as Sierra interchanges