Fan Blower Motor Wheel: 67-92 GM (shallow)The key feature of this "shallow" fan blower motor wheel is its depth of 2. 7 16" (63mm), compared to the typical 3. 5" (87mm) found in most others. Made of metal, it fits GM vehicles from the 1960s through 1992, primarily those without factory air conditioning or with narrower fan housings. The fan blower motor wheel has a standard diameter of approximately 5. 25 inches (108mm), but its depth is what often surprises converters. Designed for