The Red Dot 73R0542 blower motor is engineered for dependable airflow and long service life in demanding mobile HVAC environments. Operating on 12 volts with single-speed output, this motor is commonly used where consistent airflow and efficient electrical performance are required.
Its permanent-magnet construction supports efficient operation, while the non-vented housing helps protect internal components from dust and debris. The strap/stud mount configuration with a 2 5/16″ span allows secure installation. With a 5/16″ single shaft and clockwise rotation, the 73R0542 is a proven replacement option across a wide range of heavy-duty HVAC systems.
Product Specifications
Red Dot Part No.: 73R0542
Red Dot Factory Part No.: RD-5-7129-0
Product Name: Blower Motor
Motor Type: Permanent Magnet
Voltage: 12V
Speed: Single Speed
Rotation: CW
Vent: Sealed / Non-Vented
Overall Length (A): 4 7/8″
Motor Length (B): 4″
Motor Diameter (D): 3″
Shaft Type: Single
Shaft Diameter: 5/16″
Shaft Length (C): 1 1/4″
Mount Type: Strap / Stud Mount
Mount Span: 2 5/16″
Connector: Male blade with Packard #8900420
Applications
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Cab heater systems
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Evaporator blower motor assemblies
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Mobile HVAC units
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Condenser and auxiliary airflow applications
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Heavy-duty trucks and buses
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Off-road and industrial equipment
Interchange & Cross-Reference Numbers
OEM / Industry References:
Air Source / MEI: 3542
Climatech: HA1790, HA17900
CoolStar / MEI: 102-1040
Fasco: 2809-541-223
Primatech: PTAC3542
Siemens: PM3318
Truck Air / MEI: 44577
TruckAC+: T5813
TEXAS TRUCK AC: 150-4493
TTA/C: 30-1029
Red Dot References:
Aftermarket: 73R0542
Factory: RD-5-7129-0
Interchange Numbers:
01-2616, 102-1040, 1099043, 150-4493, 232-8766, 274441, 2809-541-040, 2809-541-223, 3542, 4379-RD571290, 4379-RD571290P, 73R0542, ABP N83 301089, BM02140, HA17900, PM3318, RDHRD571290P, RDT73R0542
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