When your Coleman Mach rooftop A/C stops moving air, the blower motor is usually the culprit. This NBK Parts 20513 is a direct replacement motor engineered specifically for Coleman Mach 9000 and 49000 series units. It matches the original mounting dimensions, shaft sizes, and electrical ratings so you can restore cooling performance without modifying anything. Includes the motor and hardware for a straightforward swap.
A failing blower motor shows up as weak airflow, loud rattling, or a unit that runs the compressor but never circulates cool air through the coach. Replacing the motor is one of the most cost-effective A/C repairs you can do yourself, and this NBK motor is built to match the original spec so the job goes smoothly.
NBK Parts (part number 20513, also sold under SKU 70-4139) is a widely stocked aftermarket replacement that cross-references multiple Coleman Mach OEM part numbers and the FASCO original equipment motor. See the compatibility list in the specs column before ordering.
Runs at 1650 RPM high speed and 1465 RPM low speed, matching the original two-speed fan control logic of Coleman Mach 9000 series units.
Integrated thermal overload protector shuts the motor down if it overheats, protecting the windings and preventing damage to your A/C unit.
Two 1/2" diameter shafts -- one 1-7/8" long and one 9/16" long -- accommodate the evaporator and condenser fan blades in the same housing.
Package includes the motor and a self-tapping mounting screw so you have what you need for a basic installation without a separate hardware run.
This motor is a verified equivalent to the following Coleman Mach and FASCO part numbers. Cross-check your existing motor's label before ordering to confirm the match:
This motor is designed for Coleman Mach 9000 series and 49000 series rooftop RV air conditioners. These are among the most common rooftop units found on travel trailers, fifth wheels, and Class A, B, and C motorhomes built over the past several decades. If your unit's model number begins with 9 or 49 in the Coleman Mach lineup, verify against the OEM part numbers listed above.
Replacing a Coleman Mach blower motor is a moderately involved DIY job. You will need to access the rooftop unit, remove the outer shroud, disconnect the existing motor leads, unbolt the motor from its mounting bracket, and transfer the fan blades to the new motor shafts before reinstalling. The 26" lead wire gives adequate slack for routing inside the unit.