78R0451 – No. 10 Internal Nylon Barrier Refrigerant Hose

The 78R0451 internal nylon barrier refrigerant hose is designed for use in heavy-duty and on-highway A/C systems where low permeation, durability, and long service life are critical. The internal nylon barrier significantly reduces refrigerant and chemical permeation while maintaining flexibility and pressure resistance.

This SAE No. 10 hose features a 1/2-inch inside diameter and is compatible with beadlock or bubble-style crimp fittings, making it suitable for OEM, fleet, and aftermarket A/C installations and repairs.

Product Specifications

• Part No.: 78R0451

• Factory No.: RD-5-5010-600P

• Hose Type: Internal Nylon Barrier Refrigerant Hose

• SAE Hose Size: No. 10

• Inside Diameter: 1/2″

• Maximum Outside Diameter: 1″

• Fitting Compatibility: Beadlock or Bubble Crimp

• Application: Heavy-Duty Mobile A/C Systems

OEM / Supplier Part Numbers

• AirSource / MEI: 8510

• Alliance: ABP N83 313100

• Bergstrom: 550308

• Carrier A/C: 311-008

• Climatech: D1037-3058

• Four Seasons: 55020

• Mack: 4379-RD550100

• Truck Air: 09-5070

• Volvo: 3949324

Cross References

• Texas Truck A/C: 650-4810

• Bergstrom: 550309

• Climatech: AA1055, D1037-3058

• CoolCab: 984070

• CoolStar / MEI: 750-1010

• DTAC: 10-18011

• Euclid: E-808992

• Fleetrite: ZGG16973

• Four Seasons: 55420

• Kysor: 2610003

• Mobile Climate Control: 301-102, 311-008, 55010

• Murray: 200070

• NDNS: ABPN83313100

• Omega: 34-14932-50

• Primatech: PTAC8510

• Roadforce: RF2135503932

• Truck Air / MEI: 25812

• TruckAC+: T3844

• TTA/C: 41-2010

• Veyance Technologies: 20139511

• Western Star: 5724-3403

Interchange Numbers

09-5070, 200070, 237-0873, 2610003,
301-102, 311-008, 3918311, 3949324,
403278, 4379-RD55010600, 4379-RD55010600P,
55020, 550308, 55420, 5724-3403,
650-4810, 750-1010, 78R0451, 8510,
AA10550, ABP N83 313100,
D1037-3058, D1037-3060, D1037-3062, D1037-3063,
E-808992, HOS1103, RDHRD55010600P,
RDT78R0451, ZGG16973

Installation Note

Designed for use with beadlock or bubble-style crimp fittings only. Always verify hose size and fitting compatibility prior to assembly.