Introduction

This professional OEM-grade pneumatic lock valve is a key pneumatic control component specially manufactured for SINOTRUK heavy-duty trucks, perfectly compatible with HOWO, T5G, T7H and SITRAK series models. Mainly applied to the truck gearbox pneumatic control system, it precisely controls the locking and unlocking of high and low gear circuits, ensuring accurate gear shifting and stable pneumatic circuit operation. It effectively solves common gearbox faults such as difficult gear shifting, gear slipping, unstable high-low gear switching and pneumatic circuit failure. Produced in full compliance with original factory technical standards, it features accurate mounting dimensions and 100% original interchangeability. Widely suitable for SINOTRUK tractors, dump trucks, engineering trucks and other heavy-duty vehicles, it is an essential durable replacement part for global heavy truck aftermarket markets.

Key Features

✅ 1. Exact OEM Standard, Plug-and-Play Installation

Strictly manufactured according to OEM part number WG2203250010. All interface sizes, air passage positions, mounting hole spacing and assembly parameters are fully consistent with original parts. No modification, hole drilling or pipeline adjustment is required during replacement, realizing fast and convenient installation. It perfectly matches the original gearbox pneumatic system without air leakage or matching deviation.

✅ 2. Precise Pneumatic Control, Stable Gear Shifting

Adopts high-precision internal valve core structure with sensitive pneumatic induction and rapid response. It accurately controls the on-off and locking of the gearbox high-low gear air circuit, ensures smooth and in-place gear switching, effectively avoids gear shifting jamming, delayed gear engagement and random gear jumping faults. It stabilizes the overall working state of the transmission system and improves driving safety.

✅ 3. Premium Sealing Performance, Zero Air Leakage

Equipped with high-quality aging-resistant and wear-resistant sealing components. The internal fitting clearance is precise, achieving excellent overall air tightness. It effectively prevents pneumatic circuit air leakage, pressure loss and insufficient air supply, maintains stable working air pressure of the gearbox control system, and avoids gear system failure caused by unstable air pressure during long-term operation.

✅ 4. High-Strength Wear-Resistant Structure, Long Service Life

The valve body adopts high-strength industrial alloy material with integrated precision casting process. The internal valve core undergoes special wear-resistant treatment, featuring strong compression resistance and structural stability. It is not easy to wear, deform or jam under frequent pneumatic switching and long-term heavy-load operation, greatly reducing replacement frequency and fleet maintenance costs.

✅ 5. Strong Adaptability to Harsh Working Conditions

Optimized dustproof and anti-corrosion structure can effectively resist dust, sediment, humid air and oil pollution erosion. It maintains sensitive and stable working performance in high-temperature engine compartments, dusty mining areas and rainy and humid environments. It can withstand long-term vehicle vibration and harsh road condition impact, with ultra-low failure rate.

✅ 6. Strict Factory Inspection & Cost-Effective Wholesale

Each pneumatic lock valve passes strict air tightness test, pneumatic sensitivity test and fatigue endurance test before delivery to ensure stable and reliable quality. With factory direct sales price and sufficient spot inventory, it supports small trial orders and large batch wholesale, meeting the procurement needs of global truck repair shops, spare parts dealers and large fleets.

Detail

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Contact with clear photo of engine nameplate or chassis number:

Linda Zhang

Whatsapp:+86 176 6066 8410

EMAIL:sales16@chinatruck.cc