Why Choose Us?
Reliable Quality: Our products meet the highest industry standards.
Quick Delivery: Efficient shipping to ensure minimal downtime.
Expert Support: Professional assistance for installation and troubleshooting.
Genuine SINOTRUK WG2203250010 air control valve for HOWO T7H, A7, and tipper models. OEM replacement with full system compatibility.
When your SINOTRUK HOWO truck hesitates on clutch response or shows delayed brake release, the culprit might not be the brakes themselves — it could be the air control valve, the silent operator behind your entire pneumatic system.
The WG2203250010 air control valve is the genuine factory-fitted component used across HOWO T7H, A7, and heavy-duty tipper models, responsible for managing airflow to the clutch booster, parking brake chamber, and auxiliary systems. It ensures clean, fast switching between driving modes — especially critical when operating in stop-and-go conditions or on steep terrain.
Built to withstand constant cycling and harsh environments, this original SINOTRUK valve features brass internal manifolds, reinforced rubber diaphragms, and corrosion-resistant housing that holds up in humid ports, dusty mines, and freezing mountain passes. Whether you’re shifting gears in the Andes or dumping loads in West African quarries, this valve delivers consistent performance where cheap aftermarket copies fail prematurely.
Unlike generic replacements that leak or stick after a few weeks, the WG2203250010 maintains tight tolerances and precise timing — keeping your driveline synchronized and reducing wear on transmission components. It’s also fully compatible with standard diagnostic tools used in SINOTRUK service centers.
We stock only authentic SINOTRUK spare parts because we’ve seen too many operators lose time and money chasing “budget” alternatives that don’t last. If you want reliability, fitment assurance, and peace of mind, go original.
Feature
Specification
Part Number
WG2203250010
Product Type
Air Control Valve (Pneumatic)
Function
Clutch Booster & Parking Brake Control
Ports
4-port (G1/4″) – Color-coded connections
Operating Pressure
0.6 – 1.0 MPa (87–145 psi)
Compatibility
SINOTRUK HOWO T7H, A7, Tipper, Cement Mixers
Vehicle Models
ZZ3257N3847C1/N4367C1, ZZ4257S3847C1
Diaphragm Material
Nitrile Rubber (NBR)
Body Material
Zinc-Coated Steel + ABS Housing
Ambient Temperature Range
-40°C to +80°C
Certification
Meets GB/T 7524 & SINOTRUK Q/01JZ002
OEM Replacement
Yes – Direct Fit
Packaging
Sealed Box with Protective Foam
1. WE TREAT EVERY CUSTOMER AS OUR FRIEND, STICK TO THE PRINCIPLE: WIN-WIN AND MUTUAL BENEFIT ;
2. A VARIETY OF CHOICE FOR PRODUCTS: QUALITY, BRAND, PACKAGING;
3. WE WILL REPLY YOU FOR YOUR INQUIRY IN 24 HOURS.
4.Professional Perfomance SINOTRUCK parts supplier
5. WE WILL BE ON SERVICE 24/24 HOURS ON THE WORKING DAY.
6. ASS: WE WILL OFFER YOU THE BEST AFTER SALES SERVICE.
Always relieve air pressure from the system before removing or installing the WG2203250010 air control valve. Disconnect battery ground first, then drain reservoirs via manual drain valves. Remove mounting bolts carefully — avoid damaging airline fittings. Connect air lines according to color-coded ports: blue for clutch assist, yellow for parking brake release, red for service brake input. After installation, cycle the valve manually (if possible) to ensure smooth actuation. Rebuild air pressure slowly and check for leaks using soapy water at all joints. Test clutch engagement and brake release at low speed before full operation. Replace O-rings if cracked or hardened. Recommended to inspect alongside relay valves and foot control units during maintenance.
