78R5310 Red Dot Cabin Air Filter – Frame Filter for R-9750

Description

The Red Dot 78R5310 cabin air filter is designed to restore proper airflow and protect HVAC components in Red Dot R-9750 systems. It captures dust and airborne debris before they enter the HVAC unit, helping maintain consistent heating and cooling performance.

Because this filter matches OEM dimensions, it installs easily with no modification required. In addition, routine replacement helps extend blower life, reduce system strain, and improve in-cab air quality for drivers and operators.

This filter is commonly used in heavy-duty truck and fleet HVAC applications where reliable cab comfort is critical.

Product Specifications

• Red Dot Part Number: 78R5310M

• Red Dot Factory Numbers:

  • RD-3-4804-1P

  • RD-3-4804-0

  • RD-5-4804-0

• Filter Type: Cabin / frame air filter

• Application: Red Dot R-9750 HVAC unit

• Width: 20 3⁄4″

• Height: 4 1⁄4″

• Thickness: 1 7⁄8″

• Quantity: 1 filter

Cross References

• Texas Truck A/C: 500-8187

• AirSource – MEI: 44845

• AirSource – MEI: 9911

• CoolStar – MEI: 550-4616

• Primatech: PTAC10-9911

• Primatech: PTAC9911

• Red Dot: 78R5310M

• Red Dot – Aftermarket: 78R5310

• Red Dot – Factory: RD-3-4804-0

• Red Dot – Factory: RD-5-4804-0

• Truck Air – MEI: 18-2693

• TruckAC+: T3495

• TTA/C: 77-7003

Common Applications

• Red Dot R-9750 HVAC systems

• Heavy-duty truck cab HVAC

• Fleet and vocational vehicle climate control