The category covers transmission and differential housings, thermostat and water outlet housings, blower and heater cases, filter housings and the covers that close them.
About 840 parts are listed, split between housings and cases, in GM, Ford, Mopar and ACDelco numbers. These are low-volume, high-specificity parts: a housing is usually matched to a particular transmission or engine variant, and the casting number on the original is often the only reliable identifier.
Because a housing is a structural part, a visually identical replacement from a different variant can have different internal clearances or a different mounting face. Confirm the part number and, where the original is cracked, find out why before fitting a replacement — a housing that cracked from a misaligned mount will crack again. Where a housing is listed with its gasket or its bearing, the product page states what is included.
