The BTRAC 77R1642

The 77R1642 Skirt Mount Condenser Assembly is built for demanding mobile HVAC applications that need reliable heat rejection.
It uses a micro-channel condenser coil to support efficient cooling while helping reduce weight.

This assembly includes three 12 in. SPAL fans that move air across the condenser coil.
Together, the fans provide 2,250 CFM of airflow, helping support stable A/C performance in bus, transit, shuttle, and heavy-duty mobile applications.

Function and Performance

A condenser removes heat from the refrigerant after it leaves the compressor.
Strong airflow across the coil helps the system maintain proper pressure and cooling performance.

The 77R1642 is rated at 80,000 BTU/hr and operates on a 12V electrical system.
The listed current draw is 23 amps at 13.6 VDC.

Because condenser fitment depends on mounting style, dimensions, airflow, electrical load, and hose connections, compare the original assembly before ordering.

Design and Installation

The 77R1642 uses a skirt mount design for direct replacement in compatible installations.
It also includes plug-and-play electrical connectors to help simplify installation.

The assembly uses zinc-coated components for corrosion protection.
Its listed dimensions are approximately 52.25 in. wide, 13.80 in. deep, and 10.55 in. tall based on the dimensional reference shown with the product image.

Before installation, confirm mounting points, available space, connector style, voltage, current draw, refrigerant line routing, and airflow direction.

Product Details

• BTRAC / Product Number: 77R1642
• Red Dot Factory Number: RD-4-7850-0P
• Product Type: Skirt mount condenser assembly
• Cooling Capacity: 80,000 BTU/hr
• Voltage: 12V
• Fan Quantity: 3
• Fan Type: 12 in. SPAL fans
• Airflow: 2,250 CFM
• Current Draw: 23 amps at 13.6 VDC
• Weight: 48 lb
• Coil Type: Micro-channel condenser coil
• Construction Feature: Zinc-coated for corrosion protection
• Connector Feature: Plug-and-play connectors
• Mounting Style: Direct bolt-on skirt mount replacement
• Approximate Dimensions: 52.25 in. W x 13.80 in. D x 10.55 in. H
• Application Type: Bus, transit, shuttle, and heavy-duty mobile HVAC systems
• Fitment Note: Confirm mounting dimensions, voltage, connector style, current draw, hose routing, and airflow direction before ordering.

Cross Reference and Interchange Numbers

This part may cross reference or interchange with:

• 30590
• 50-9383
• 77-00274-11
• 77-00274-20
• 77-01288-11
• 77-01288-20
• 77-01288-40
• 77-62123-11
• 77-62123-20
• 77R1642
• 950-3435-12-CMG
• 950-T10940
• RD-4-7850-0P
• T10940
• T2816
• T5853
• Y19-CM303-11
• Y19-CM303-20

Brand Reference Guide

• Red Dot: 77R1642, RD-4-7850-0P
• AirSource / MEI: 30590
• Mobile Climate Control: 77-00274-20, 77-01288-11, 77-01288-20, 77-01288-40, 77-62123-11, 77-62123-20, Y19-CM303-20
• Texas Truck AC: 950-T10940, 950-3435-12-CMG
• Truck Air / MEI: 50-9383
• TruckAC+: T10940, T2816

Application Notes

The 77R1642 is commonly used in compatible mobile HVAC systems that require a skirt mount condenser assembly with three fans and direct bolt-on mounting.

It may be used in applications such as:

• Bus and transit HVAC systems
• Shuttle and coach applications
• Heavy-duty mobile A/C systems
• Skirt mount condenser replacement layouts

Applications should be confirmed by original part number, mounting dimensions, electrical requirements, and refrigerant line routing rather than by vehicle type alone.

Important Fitment Note

Before ordering, confirm that your original condenser uses the same skirt mount layout, 12V electrical system, 3-fan configuration, connector style, and available mounting space.

A condenser with different dimensions, airflow, fan current draw, or refrigerant connection layout may not install or perform correctly.

Need Help?

Not sure if 77R1642 is the correct condenser assembly for your HVAC system?
Contact BTRAC with your current condenser part number, mounting dimensions, connector photos, voltage, hose routing, and equipment model. Our team can help confirm fitment or find the right condenser option.

77R1642 Spec Sheet