Sunair CP21 Direct-Mount A/C Compressor, 12V, PV8 127 mm

Engineered for heavy-duty uptime, the Sunair CO-6313CA is a CP21 (TM/CP style) fixed-displacement compressor with a direct-mount PT-4002 pad, 127 mm (5 in) PV8 serpentine clutch, and 12V coil. It is designed for R134a systems using PAG 46 oil and is commonly found on Class 6–8 trucks, buses, and transport refrigeration units from leading OEMs.

Specifications

• Compressor type: CP21 (TM/CP style)
• Mount: Direct Mount pad (PT-4002 pattern)
• Pulley: PV8 serpentine, 8-groove
• Clutch diameter: 127 mm (5 in)
• Voltage: 12 VDC clutch coil
• Refrigerant: R134a
• Oil: PAG 46 (verify and adjust to system spec)
• Electrical: Single bullet terminal (1-wire)
• Country of origin: Malaysia
• VMRS: 001-001-002
• SPN: CO-6313CA

Common cross references

Direct replacement for or comparable to select numbers including:

• Thermo King: 1021055, 703158, TK1021055
• Carrier Transicold: 181012308, 766223505
• Valeo/Seltec: 10067244, 10067260, 10347245, 10367244, 10367250, 10367260, 10367290, 43567257, 43567260, 48847245
• Road Choice: RCACC8300, RCACC8301
• Air Source/MEI: 5880B, 5880BG, 5881G
• Others: Everco 971071, Truck Air 033793B, FJC 216329, Global Parts 6512833, Omega 2047245

Installation and service notes

• Match pad mount (PT-4002), pulley groove count, clutch diameter, and electrical connector to the unit being replaced.
• Drain and measure shipped oil; set PAG 46 oil charge to the vehicle/TRU specification.
• Replace receiver-drier/accumulator and expansion device, flush lines and condenser, evacuate to at least 500 microns, and charge R134a by weight.
• Verify belt alignment and clutch air gap; perform leak and performance tests after install.

Interchange is for reference; verify fitment by mount pattern, pulley/voltage, and application before ordering.