78R0456 – No. 6 Internal Nylon Barrier Refrigerant Hose

The 78R0456 internal nylon barrier refrigerant hose is engineered for heavy-duty mobile A/C applications where low permeation, durability, and flexibility are critical. Its internal nylon barrier construction helps minimize refrigerant and chemical permeation while maintaining excellent pressure resistance and long service life.

This SAE No. 6 hose features a 5/16-inch inside diameter and is compatible with beadlock or bubble-style crimp fittings, making it suitable for OEM, fleet, and aftermarket installations across on-highway and off-highway equipment.

Note: Hose is sold by the foot. Order quantity determines the length supplied.

Product Specifications

• Part No.: 78R0456

• Factory No.: RD-5-5006-600P

• Hose Type: Internal Nylon Barrier Refrigerant Hose

• SAE Hose Size: No. 6

• Inside Diameter: 5/16″

• Maximum Outside Diameter: 3/4″

• Fitting Compatibility: Beadlock or Bubble Crimp

• Application: Heavy-Duty Mobile A/C Systems

OEM / Supplier Part Numbers

• AirSource / MEI: 8506

• Alliance: ABP N83 313106, ABP N83 313126

• Bergstrom: 550306, 550307

• Caterpillar: AA1020

• Climatech: D1037-3023

• Truck Air: 09-5066

• Volvo: 3949322

Cross References

• Texas Truck A/C: 650-4806

• CoolCab: 984066

• CoolStar / MEI: 750-1006

• DTAC: 10-18009

• Euclid: E-808990

• Fleetrite: ZGG16971

• Four Seasons: 55416

• Kysor: 2610001

• Mobile Climate Control: 55016

• Murray: 200066

• NDNS: ABPN83313106, ABPN83313126

• Omega: 34-14930-50

• Primatech: PTAC8506

• Roadforce: RF2555503613

• TRP / Climatech: AA10650

• Truck Air / MEI: 24351

• TruckAC+: T3850

• TTA/C: 41-2006

• Veyance Technologies: 20139499

• Western Star: 5724-3401

Interchange Numbers

09-5066, 200066, 237-0879, 2610001,
3918307, 3949322, 403276,
4379-RD55006600, 4379-RD55006600P,
55016, 550306, 55416, 5724-3401,
650-4806, 750-1006, 78R0456, 8506,
AA10200, AA10450, AA40650,
ABP N83 313106, ABP N83 313126,
D1037-3020, D1037-3023, D1037-3026,
E-808990, HOS1101, RDHRD55006600P,
RDT78R0456, ZGG16971

Installation Note

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