78R5370 Replacement Recirculation Filter – R-9757

Description

The 78R5370 replacement recirculation filter is engineered specifically for R-9757 HVAC systems. It helps capture dust and airborne debris from recirculated air, which supports consistent airflow and protects internal HVAC components.

Because this filter matches OEM dimensions, installation is quick and requires no modification. Routine replacement helps maintain cab comfort, reduces system strain, and supports long-term HVAC reliability in heavy-duty applications.

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Product Specifications

• Part Number: 78R5370

• Factory Number: RD-3-6408-0P

• Filter Type: Recirculation filter

• Width: 24″

• Height: 4-7⁄8″

• Thickness: 1″

Unit / Application:

• R-9757 HVAC units

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Cross References

• Texas Truck A/C: 500-8189

• AirSource – MEI: 10-0046

• AirSource – MEI: 9951

• CoolStar – MEI: 550-4615

• Primatech: PTAC10-0046

• Primatech: PTAC9951

• Red Dot – Aftermarket: 78R5370

• Red Dot – Factory: RD-3-6408-0

• Truck Air – MEI: 18-2697

• TruckAC+: T3478

• TTA/C: 77-7014

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OEM / Manufacturer References

• Red Dot Part No.: 78R5370

• Red Dot Factory No.: RD-3-6408-0P

• Air Source Part No.: 9951

• Alliance Part No.: ABP N83 328258

• Freightliner Part No.: RDH RD3 6408 0

• Mack Part No.: 4379-RD364080

• Volvo Part No.: RDHRD364080P

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Interchange Numbers

18-2697, 232-9936, 4379-RD364080, 4379-RD364080P, 500-8189,
78R5370, 9951, ABP N83 328258, RDH RD3 6408 0,
RDHRD364080P, RDT78R5370

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Common Applications

• R-9757 HVAC systems

• Truck cab recirculation filtration

• Heavy-duty on-highway equipment

• Vocational and fleet HVAC maintenance

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