The Red Dot 73R4254 is engineered for double-shaft HVAC applications, commonly used in dual-wheel heater and evaporator assemblies on 24V systems. Its permanent magnet motor design delivers efficient, reliable airflow while supporting long service life in demanding environments.
The vented housing helps dissipate heat during extended operation, making this blower motor well suited for trucks, buses, and off-road equipment. With a strap/stud mounting configuration and 2-5/16″ span, the 73R4254 installs easily across a wide range of mobile HVAC platforms.
Product Specifications
Red Dot Part No.: 73R4254
Red Dot Factory Part No.: RD-5-5121-24P
Product Name: Blower Motor
Voltage: 24V
Speed: Single Speed
Motor Type: Permanent Magnet
Vent: Vented
Shaft Configuration: Double Shaft
Shaft Diameter: 5/16″
Shaft Length: 3 5/8″
Rotation: Clockwise / Counter Clockwise
Motor Diameter: 3″
Overall Length: 4 13/16″
Motor Length: 4″
Mount Type: Strap / Stud Mount
Mounting Span: 2 5/16″
Connector: Two-conductor Packard #8900420, 1/4″ blade terminal
Applications
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Dual-wheel heater and evaporator assemblies
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24V mobile HVAC systems
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Heavy-duty truck, bus, and off-road equipment HVAC applications
Interchange & Cross-Reference Numbers
OEM / Industry References:
Texas Truck AC: 150-3601
Air Source / MEI: 3234
Climatech: HB1060, HB1075
CoolCab: 937422
CoolStar / MEI: 111-1036
Fasco: 2809-841-007
Primatech: PTAC3234
Redmond: PF2809Q
TRP / Climatech: HB10750
Truck Air / MEI: 12055
TruckAC+: T3215
TTA/C: 30-1351
Red Dot References:
Aftermarket: 73R4254
Factory: RD-5-5121-24
Interchange Numbers:
01-3033, 111-1036, 150-3601, 232-8819, 2809-541-023, 2809-841-007, 3234, 4379-RD5512124, 4379-RD5512124P, 73R4254, ABP N83 301142, BM21136, HB10750, PF2809Q, RDHRD5512124P, RDT73R4254
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