903413 Nordyne 4-speed 4-ton blower assembly for M1 & M3

4-speed blower assembly for Nordyne M1 and M3 gas furnaces with 4 ton a/c units. Assembly includes a 903433 (622081) 4-speed 1/2hp 115V motor, RBW11202 12x8 blower wheel, PRCF10A 10/370 round run cap, housing & plug. Rotates counterclockwise when viewing from back of motor (CCWLE).

This is not a commonly used blower assembly so may be subject to availability. More typical blower assemblies used are the 3-speed 903773 for furnaces with A/C units under 5 ton and the 903890 for furnaces with 5-ton A/C units.

Shipped direct to you from our warehouse in Ohio.

🧩 Product Description

• Part Number: 903413

• Type: Blower Assembly

• Motor: 4-speed, 240V, compatible with 4-ton A/C systems

• Application: Forced-air gas furnaces

• Compatible Furnace Series: M1GB, M1GC, M1GD, M1MC, M1MD

• Weight: ~40 lbs

• Package Dimensions: 10″ × 12″ × 12″

• Power Source: AC-powered

• Color: Silver

• Vendor: Quinn Supply

• Price: $602.95 USD

• Cost: $464.88 USD

• Margin: 22.9%

This assembly includes the blower housing, motor, wheel, and integrated wiring harness — preconfigured for plug-and-play installation in Nordyne M1 and M3 gas furnaces with 4-ton cooling setups.

✅ Compatibility

These models are commonly found in mobile homes and modular housing, where compact, high-efficiency airflow is essential.

🛠️ Installation Notes

• Designed for direct-fit replacement — no cabinet modifications required

• Ensure proper speed tap selection based on cooling load and duct configuration

• Replace capacitor and inspect blower wheel for wear during install

• Ideal for technician kits servicing Nordyne gas furnaces from mid-2000s onward