78R0452 – No. 12 Internal Nylon Barrier Refrigerant Hose

The 78R0452 internal nylon barrier refrigerant hose is engineered for heavy-duty and on-highway A/C applications where low permeation, durability, and long service life are required. Its internal nylon barrier construction helps limit refrigerant and chemical permeation while maintaining flexibility and pressure resistance.

This SAE No. 12 hose features a 5/8-inch inside diameter and is compatible with beadlock or bubble-style crimp fittings, making it suitable for OEM, fleet, and aftermarket mobile A/C installations.

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

Product Specifications

• Part No.: 78R0452

• Factory No.: RD-5-5012-600P

• Hose Type: Internal Nylon Barrier Refrigerant Hose

• SAE Hose Size: No. 12

• Inside Diameter: 5/8″

• Maximum Outside Diameter: 1-1/8″

• Fitting Compatibility: Beadlock or Bubble Crimp

• Application: Heavy-Duty Mobile A/C Systems

OEM / Supplier Part Numbers

• AirSource / MEI: 8612, 8512

• Alliance: ABP N83 313102

• Carrier A/C: 311-009, 301-103

• Climatech: AA1060, D1037-3064

• Four Seasons: 55422

• Mack: 4379-RD55012600

• PACCAR: D1037-3070

• Truck Air: 09-5012

• Volvo: 3949325

Cross References

• Texas Truck A/C: 650-4812

• Bergstrom: 550310

• CoolCab: 684072

• CoolStar / MEI: 750-1012

• DTAC: 10-18012

• Euclid: E-808993

• Everco HD: 984072

• Fleetrite: ZGG16974

• Kysor: 2610004

• Mobile Climate Control: 301-103, 311-009

• Murray: 200072

• NDNS: ABPN83313102

• Omega: 34-14933-50

• Primatech: PTAC8512

• Roadforce: RF5375503876

• Truck Air / MEI: 26543

• TruckAC+: T3847

• TTA/C: 41-2012

• Veyance Technologies: 20139512

Interchange Numbers

09-5012, 09-5072, 1-4186, 200072,
237-0876, 2610004, 301-103, 311-009,
3949325, 403279, 4379-RD55012600, 4379-RD55012600P,
55422, 650-4812, 750-1012, 78R0452, 8512,
921212, AA10600, ABP N83 313102,
D1037-3064, D1037-3070, D1037-3074,
E-808993, HOS1104, RDHRD55012600P,
RDT78R0452, ZGG16974

Installation Note

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