Description
The 85120289 is the block-type A/C expansion valve for 2006–2017 Volvo VNL, VHD, VNM, VNX, VT, and VAH heavy-duty trucks, replacing Volvo V5778001 and Freightliner BOAV5778001. Aftermarket replacement supplied by Predator HD Parts that meters refrigerant flow into the cab evaporator core to control discharge temperature; sealed block design, OE-style flange and ports.
Signs You Need a New A/C Expansion Valve
- Warm or weak air from the dash vents with a healthy compressor and condenser
- Frosting or icing on the evaporator inlet line / firewall plumbing
- Suction pressure low and discharge pressure high (or vice-versa) on a gauge set
- Hissing or whistling from the dash on initial A/C engagement
- System short-cycling on the high-side switch or freeze stat
Specifications
| Manufacturer | Predator HD Parts (aftermarket) |
|---|---|
| Part Number | 85120289 (replaces Volvo 85120289 / V5778001) |
| Part Type | Block-Type A/C Expansion Valve |
| Refrigerant | R-134a (per OE Volvo A/C system) |
| Mounting | OE-style block flange |
Cross References
This expansion valve replaces or is equivalent to the following part numbers:
- Volvo: 85120289, V5778001
- Freightliner: BOAV5778001
- Truck Air: 12-1608A
- MEI: 1684
- Also known as: EXV-1082, 903805, 3131377, 3131345, KG37076, NMD 85120289, NMD85120289-S, EX529511C
Applications
This A/C expansion valve fits the cab HVAC system on:
- Volvo VNL (2006–2016)
- Volvo VHD (2006–2016)
- Volvo VNM (2006–2016)
- Volvo VNX (2015–2017)
- Volvo VT (2006–2010)
- Volvo VAH (2011–2015)
Also fits Freightliner chassis specifying BOAV5778001 (shared cab HVAC architecture in select years).
Volvo’s late-model VNL platform (2018+ / VNL 740 / 760 / 860) uses an updated cab HVAC architecture — verify model-year cutoff before ordering. Recover and recharge the system per OE refrigerant capacity after installation.
