This range covers Kia, Mazda, Nissan and Volvo applications, matched by OEM number.
A housing does two jobs. It contains the fluid or the mechanism, and it sets the position of whatever is bolted to it. That second job is why a cracked thermostat housing causes more than a leak: the seal face distorts, and the joint weeps again a few weeks after a new gasket. A distorted case will also misalign a bearing or a shaft and produce noise that seems to come from somewhere else entirely.
Look for coolant or oil tracks running down from a seam, white or brown staining at a bolt boss, a hairline crack that only weeps when hot, or a mating face that rocks when checked with a straight edge. Clean the area first; a leak that starts higher up will always look like a leaking housing.
Listings give the years, engine and drivetrain plus the OEM part number. Where a housing is specific to a transmission type or an engine variant, that is stated in the title.
