The Red Dot 73R4252 is engineered for HVAC systems that require a double-shaft blower motor, commonly used in dual-wheel heater and evaporator configurations. Operating on 12 volts, this motor provides consistent airflow while maintaining efficiency through its permanent magnet motor design.
Its vented housing helps manage heat during extended operation, making it suitable for demanding truck, bus, and off-road HVAC environments. The strap/stud mounting configuration with a 2-5/16″ span allows for straightforward installation across a wide range of mobile HVAC platforms.
Product Specifications
Red Dot Part No.: 73R4252
Red Dot Factory Part No.: RD-5-5121-0P
Product Name: Blower Motor
Voltage: 12V
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
Applications
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Dual-wheel heater and evaporator assemblies
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Heavy-duty truck HVAC systems
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Bus and transit HVAC applications
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Off-road and specialty vehicle HVAC systems
Interchange & Cross-Reference Numbers
OEM / Industry References:
Texas Truck AC: 150-3514
Air Source / MEI: 3952
Alliance: ABP N83 301232
Case IH: 1974779-C1
Climatech: HB1045, HB1070
CoolStar / MEI: 110-1072
Fasco: 2807-541-167, 2809-551-015, 2898-092-008
Mack: 4379-RD551210
Motivair: 1-1270
NDNS: ABPN83301232
Omega: 26-14508
Primatech: PTAC3952
Roadforce: RF6872032559
TRP / Climatech: HB10450
Truck Air / MEI: 44575
TruckAC+: T3204
TTA/C: 30-1326
UAC: BM3519
Volvo: 176131
Red Dot References:
Aftermarket: 73R4252
Factory: RD-5-5121-0
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