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The WEICHAI WP12 Air Conditionning Compressor Group is a high-performance refrigerant compressor assembly that provides cabin cooling and climate control for vehicles powered by WP12 heavy-duty diesel engines. As genuine WEICHAI Engine Parts, this compressor group delivers reliable cooling performance across all WP12 variants from 336 HP to 550 HP.
The WEICHAI WP12 Air Conditionning Compressor Group is a belt-driven refrigerant compressor that circulates R134a or R1234yf refrigerant through the vehicle’s AC system. The compressor is mounted on the engine block via a dedicated bracket assembly and is driven by the serpentine belt from the crankshaft pulley, ensuring synchronized operation with engine speed.
The WEICHAI WP12 Air Conditionning Compressor Group consists of the compressor body (fixed or variable displacement), the mounting bracket (612640060240), the belt pulley with clutch assembly, and the electrical connector for clutch engagement. The compressor uses a swash plate or variable displacement mechanism to adjust refrigerant output based on cooling demand, improving fuel economy and reducing engine load.
The WEICHAI WP12 Air Conditionning Compressor Group is available in multiple OEM part number variants to suit different vehicle applications. Common references include 612630060008 (WP12 engine AC compressor), 612640060240 (air conditioning compressor bracket), and 612600061007 (compressor bracket support assembly). The bracket group ensures proper belt alignment and secure mounting, preventing vibration and belt wear.
Applications for the WEICHAI WP12 Air Conditionning Compressor Group include Shacman X3000/F3000, Sinotruk HOWO, Beiben trucks, JAC trucks, CAMC vehicles, Yutong and Kinglong buses, SDLG wheel loaders, XCMG equipment, marine WP12C engines, and stationary generator sets. The compressor group is compatible with WP12 power outputs from 336 HP to 550 HP across Euro III, Euro IV, Euro V, China VI, and marine emission standards.
Counterfeit AC compressors often use inferior materials, inadequate lubrication, or poor clutch assemblies, leading to premature failure, refrigerant leaks, and insufficient cooling. Always source genuine WEICHAI WP12 Air Conditionning Compressor Group components from authorized distributors to ensure proper fitment, reliable cooling performance, and long-term AC system reliability.
| NO. | Part NO | Description |
|---|---|---|
| 1 | 612630060008 | Air Conditioning Compressor Assembly (WP12 Engine, Complete Unit) [9†L2-L4] |
| 2 | 612640060240 | Air Conditioning Compressor Bracket / Mounting Bracket [5†L4-L5] |
| 3 | 612600061007 | Compressor Bracket Assembly / Support Bracket (WP12) [12†L10-L11] |
| 4 | 612630060441 | Engine Support Bracket (WP12 Engine, Mounting Support) [11†L6-L8] |
| 5 | JM2240.****.20 | AC Compressor Assembly (WP12.460E62, OEM Procurement Reference) [5†L27-L29] |
| 6 | DZ13241845034 | Air Conditioning Compressor Assembly (Shacman Delong X3000, WP12) [4†L4-L8] |
| 7 | 190003931102 | Spring Washer (Compressor Mounting Hardware) [9†L7-L8] |
| 8 | 190017510011 | O-Ring / Rubber Sealing Ring (AC System Seal) [9†L8-L9] |
The table above lists common service parts for the WEICHAI WP12 Air Conditionning Compressor Group. When replacing the compressor assembly, always verify the part number against your vehicle model and engine configuration. The compressor bracket (612640060240) and support bracket (612600061007) must be inspected for cracks or wear during compressor replacement, as damaged brackets can cause belt misalignment and premature compressor failure.
Our WEICHAI WP12 Air Conditionning Compressor Group is manufactured to original equipment specifications with high-quality materials. The compressor body is cast from durable aluminum alloy, the internal swash plate mechanism is precision-ground, and the clutch assembly uses high-grade friction materials for long service life and consistent engagement.
The WEICHAI WP12 Air Conditionning Compressor Group includes a precision-engineered mounting bracket (612640060240) that ensures perfect belt alignment with the crankshaft pulley. The bracket is manufactured from high-strength cast iron or aluminum alloy, providing excellent rigidity and vibration damping. Proper bracket alignment prevents belt squeal, reduces wear, and extends compressor life.
The WEICHAI WP12 Air Conditionning Compressor Group delivers consistent refrigerant flow across all engine speeds, from idle to 2100 RPM. The compressor’s displacement is optimized for the cabin cooling requirements of heavy-duty trucks, buses, and construction equipment, ensuring comfortable cabin temperatures even in extreme ambient conditions up to 50°C.
No modifications required for WP12 engines in Shacman, Sinotruk, Beiben, JAC, CAMC, Yutong, Kinglong, SDLG, XCMG, marine, and generator applications. Available for Euro III, Euro IV/V, China VI, and marine engine variants. Multiple part number variants available to match specific AC system configurations and compressor types.
Each WEICHAI WP12 Air Conditionning Compressor Group undergoes rigorous quality control including refrigerant leak testing (helium mass spectrometer), clutch engagement verification, bearing smoothness testing, and dimensional inspection. IATF 16949 certified quality with full traceability. No defects are tolerated.
Worldwide shipping from regional warehouses. Free compressor installation torque charts (bracket bolts: 35-45 N·m, compressor-to-bracket: 22-28 N·m), belt tension adjustment procedures, and troubleshooting guides provided with each order. Volume discounts available for fleet customers and engine rebuilders.
Unlike aftermarket compressors that use substandard internal components and inadequate lubrication, our genuine WEICHAI WP12 Air Conditionning Compressor Group is manufactured to original equipment specifications with documented quality control. The compressor features a swash plate mechanism with precision-ground pistons and cylinder bores, ensuring efficient refrigerant compression and long service life. The clutch assembly uses high-quality bearings and friction materials that withstand repeated engagement cycles without slipping or overheating.
The WEICHAI WP12 Air Conditionning Compressor Group is designed to operate with R134a or R1234yf refrigerant, depending on the vehicle’s emission standard and regional regulations. The compressor is compatible with Pag oil (polyalkylene glycol) or PAG/POE hybrid lubricants as specified by the AC system. The compressor body features integrated high-pressure and low-pressure ports for service access, and the electrical connector is sealed against moisture and dust ingress (IP67-rated).
Technical support includes AC compressor installation procedures: evacuate the AC system using a recovery machine, remove the drive belt, disconnect the electrical connector, remove the refrigerant lines, unbolt the compressor from the bracket, install the new compressor with new O-rings (190017510011), torque bracket bolts to 35-45 N·m, torque compressor-to-bracket bolts to 22-28 N·m, install new drive belt following routing diagram, evacuate the AC system for at least 30 minutes, recharge with the correct refrigerant quantity and oil, and perform a leak test. Troubleshooting guides for symptoms like insufficient cooling (low refrigerant or failed compressor), clutch noise (worn bearing or misaligned belt), and compressor seizure (internal failure or oil starvation) are provided.
For fleets, sample testing is available. Order one WEICHAI WP12 Air Conditionning Compressor Group for trial; volume pricing applies. Many customers report over 500,000 km trouble-free AC system operation after replacing failed original compressors with our genuine components. We provide cross-reference support for part number verification—please provide your engine serial number and vehicle model for accurate matching. We stock both fixed displacement and variable displacement compressor variants, as well as individual bracket components and O-ring seal kits.
Also monitor the AC system’s refrigerant charge level using manifold gauges. Low refrigerant charge reduces compressor lubrication, causing internal wear and eventual seizure. High refrigerant charge increases compressor load, causing clutch slip and premature failure. The correct refrigerant charge for WP12-equipped vehicles varies by cabin size and AC system design; consult the vehicle manufacturer’s specifications.
For severe-duty applications (mining, construction, heavy haul, marine), reduce AC system inspection intervals to every 25,000 km (15,000 miles) or 250 operating hours. High ambient temperatures, dust, and vibration accelerate belt wear, bracket fatigue, and clutch bearing degradation. Marine applications require additional corrosion checks—saltwater environments can corrode the compressor body, clutch pulley, and bracket mounting hardware.
When installing a new WEICHAI WP12 Air Conditionning Compressor Group, always evacuate the AC system using a vacuum pump for at least 30 minutes to remove moisture and non-condensable gases. Charge the system with the correct refrigerant type (R134a or R1234yf) and quantity, and add the correct Pag oil type and volume as specified by the vehicle manufacturer. Do not overcharge or undercharge—both conditions will damage the compressor. After charging, run the engine at idle with AC on maximum and verify that the compressor clutch engages, the suction line becomes cold, and the discharge line becomes hot.
Maintain a logbook of all AC system maintenance: dates of compressor inspections, belt tension checks, refrigerant charge readings, clutch engagement observations, and any abnormal findings. For fleet operators, tracking cabin cooling performance (vent outlet temperature) over time is a powerful predictive maintenance tool—a gradual increase in vent temperature often indicates developing compressor wear or low refrigerant charge, providing ample warning before complete AC failure occurs.
In summary, the WEICHAI WP12 Air Conditionning Compressor Group features OEM-quality construction, precision mounting bracket design, efficient cooling performance, and direct fitment for all WP12 applications. Whether you are rebuilding a Shacman X3000, Sinotruk HOWO, Beiben truck, Yutong bus, SDLG wheel loader, marine vessel, or generator set, choosing a genuine AC compressor group directly impacts cabin cooling performance, driver comfort, AC system reliability, and overall vehicle uptime.
For workshops performing in-frame overhauls, we recommend ordering the WEICHAI WP12 Air Conditionning Compressor Group as a complete kit including compressor assembly (612630060008), mounting bracket (612640060240), support bracket (612600061007), O-ring set (190017510011), and hardware. This approach eliminates hidden failures and gives your customer a worry-free warranty period. The compressor is pre-inspected for leak-tightness, clutch engagement, and bearing smoothness before shipment.
Our inventory includes both fixed displacement and variable displacement AC compressor variants for different WP12 engine configurations. The standard WEICHAI WP12 Air Conditionning Compressor Group provides excellent service life for long-haul trucking, while heavy-duty variants feature enhanced internal components for mining, construction, and marine applications. We provide cross-reference support for part number verification—please provide your engine serial number and vehicle model for accurate matching.
We provide after-sales documentation including compressor specification sheets, refrigerant charge charts, Pag oil type and quantity specifications, electrical connector pinout diagrams, diagnostic trouble code (DTC) guides for AC-related faults, and installation torque specifications upon request. Every WEICHAI WP12 Air Conditionning Compressor Group is packaged in protective foam-lined boxes to prevent damage during shipping. Bulk orders receive custom palletizing and export documentation assistance. Express shipping available for urgent repairs—most orders dispatched within 24 hours.
All specifications based on original WEICHAI WP12 engine data. Cross-check part numbers with engine serial number and vehicle model. The WEICHAI WP12 Air Conditionning Compressor Group includes OEM references 612630060008 (AC compressor assembly), 612640060240 (AC compressor bracket), 612600061007 (compressor bracket support), 612630060441 (engine support bracket), and DZ13241845034 (Shacman Delong X3000 variant). Always torque bracket-to-block bolts to 35-45 N·m, compressor-to-bracket bolts to 22-28 N·m, use new O-rings (190017510011) at every service, evacuate AC system for at least 30 minutes before recharging, and add correct Pag oil quantity during installation.
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