70R2078S Red Dot No. 8 Straight Refrigerant Hose Splicer with R134a Quick-Disconnect Service Port (16 mm)

The Red Dot 70R2078S Straight Splicer with R134a Quick-Disconnect Service Port is designed to join two same-size No. 8 refrigerant hoses (8 × 8) in mobile HVAC systems. Because it uses a straight splicer configuration, it enables clean, inline hose repairs without altering routing.

This fitting features an integrated 16 mm R134a quick-disconnect service port, which allows technicians to evacuate, charge, and service the system using standard R134a couplers. As a result, it improves service speed and reduces the need for extra adapters or fittings.

In addition, the steel construction increases strength and durability in high-pressure refrigerant environments. Therefore, it performs well in trucks, buses, and off-highway equipment operating under demanding conditions.

Because this part appears across many OEM and aftermarket catalogs, technicians often rely on it as a trusted replacement component for mobile refrigeration service.

Product Specifications

• Red Dot Part Number: 70R2078S

• Red Dot Factory Number: RD-5-7057-0P

• Type: Straight

• Fitting Style: Splicer with quick-disconnect service port

• Material: Steel

• Hose Size: 8 × 8 (No. 8)

• Service Port: 16 mm (R134a quick-disconnect)

• Thread: N/A

Common Applications

This straight splicer fitting with R134a service port is commonly used for:

• Mobile A/C refrigerant hose repair

• Inline hose splicing with modern service access

• Truck and bus HVAC systems

• Construction and agricultural equipment

• Custom refrigerant hose assemblies

As a result, it works well for both service repairs and new system builds that require R134a quick-connect charging capability.

Cross References / Interchange Numbers

This part commonly interchanges with:

• Air Source / MEI: 4579S

• Alliance: ABP N83 311718

• Fleetrite: ZGG12050S

• Jbar: 405551

• Kysor: 2610902

• Mack: 4379-RD570570

• Truck Air / MEI: 08-3422BS

• Volvo: RDHRD570570P

Additional aftermarket references include:
550-SB5011-6, SB6102-3, 605-2422, 35-SB6102-3, PTAC4579S, FT32422, RDT70R2078S

Product Summary

• Configuration: Straight splicer with quick-disconnect service port

• Material: Steel

• Hose Compatibility: 8 × 8 (No. 8)

• Service Access: 16 mm R134a quick-disconnect

• Application: Mobile HVAC / A/C systems