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.
Le 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 |
spécification |
| Numéro d'article |
WG2203250010 |
| Product Type |
Air Control Valve (Pneumatic) |
| Fonction |
Clutch Booster & Parking Brake Control |
| Ports |
4-port (G1/4″) – Color-coded connections |
| Pression de fonctionnement |
0.6 – 1.0 MPA (87–145 psi) |
| Compatibilité |
SINOTRUK HOWO T7H, A7, Tipper, Bétonnières |
| Vehicle Models |
ZZ3257N3847C1/N4367C1, ZZ4257S3847C1 |
| Diaphragm Material |
Nitrile Rubber (Nbr) |
| Body Material |
Zinc-Coated Steel + ABS Housing |
| Ambient Temperature Range |
-40° C à + 80 ° C |
| certificat |
Meets GB/T 7524 & SINOTRUK Q/01JZ002 |
| Remplacement OEM |
Yes – Direct Fit |
| Emballage |
Sealed Box with Protective Foam |
1. NOUS TRAITONS CHAQUE CLIENT COMME NOTRE AMI, ADHÉREZ AU PRINCIPE: AVANTAGE GAGNANT ET MUTUEL ;
2. UNE VARIÉTÉ DE CHOIX DE PRODUITS: QUALITÉ, MARQUE, EMBALLAGE;
3. NOUS VOUS RÉPONDRE À VOTRE DEMANDE EN 24 HEURES.
4.Fournisseur de pièces SINOTRUCK de performance professionnelle
5. NOUS SERONS EN SERVICE 24/24 HEURES DE LA JOURNÉE DE TRAVAIL.
6. CUL: NOUS VOUS OFFRIRONS LE MEILLEUR SERVICE APRÈS-VENTE.
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.
