Howo Double-H Valve – 100% Genuine OEM Product

Reliable Howo Double-H Valve ensures smooth gear shifting and stable transmission operation for HOWO heavy trucks.

About Howo Double-H Valve

As a professional supplier of Sinotruk heavy-duty truck spare parts for global export, we supply 100% genuine OEM Howo Double-H Valve for all HOWO series heavy trucks.

The Howo Double-H Valve, also known as H valve, is a core pneumatic control component of the truck transmission system.
It controls high and low gear switching of the auxiliary gearbox, enabling drivers to smoothly shift between high-speed range and low-speed range.
Our genuine Howo Double-H Valve adopts precision internal valve core and high-performance sealing rings.
It features sensitive response, stable air tightness, strong pressure resistance and long service life.
All products strictly comply with Sinotruk OEM production standards for perfect installation matching.
We support bulk wholesale, small trial orders and mixed container delivery for overseas truck dealers, maintenance workshops and fleet companies.

Main OEM Models & Specifications

We keep sufficient stock of genuine Howo Double-H Valve with complete OEM part numbers, widely compatible with manual gearboxes installed on HOWO heavy trucks.

OEM Part Number	Product Introduction	Matched Transmission	Applicable Vehicles
WG2203210001	Standard Universal Double-H Valve	HW10, HW12 10/12-speed gearbox	HOWO 371HP, 380HP tractors, dump trucks
WG2203210003	Reinforced Heavy-Duty Double-H Valve, upgraded sealing structure	HW12, HW16 gearbox	HOWO 420HP, 430HP heavy-load trucks, frequent shifting scenarios
WG2203250003	Upgraded integrated Double-H Valve	HW16710, HW19710 16-speed transmission	HOWO A7, T7H, TX, concrete mixers, mining vehicles
WG2203250015	Low-temperature resistant Double-H Valve	HW10/HW12/HW16 series gearbox	HOWO full-series heavy trucks operating in cold regions
WG2203250001	Classic type Double-H Valve (old version)	HW10 series transmission	Early HOWO classic models, Steyr heavy trucks

Howo Double-H Valve

WG2203210001

Howo Double-H Valve

WG2203250001

Howo Double-H Valve

WG2203250003

Howo Double-H Valve

WG2203250015

Core Functions

Reliable Howo Double-H Valve guarantees normal gearbox range switching during vehicle operation:

Control the air circuit to drive the auxiliary gearbox cylinder, realizing automatic switching between high gear range and low gear range.
Maintain stable air sealing to prevent air leakage which leads to difficulty in high/low gear shifting.
Deliver rapid response when operating the shift lever for smooth and unobstructed gear conversion.
Ensure timely and stable gas supply during shifting to protect the gearbox synchronizer and reduce component impact wear.

Core Functions

Our genuine Howo Double-H Valve possesses obvious advantages compared with inferior aftermarket alternatives:

Precision machined valve core ensures flexible movement and low failure rate under long-term frequent operation.
Adopts wear-resistant rubber sealing components with excellent anti-aging performance to effectively avoid air leakage.
Features stable pressure resistance, adapting to complex working environments with variable temperatures and rough road conditions.
Every unit passes rigorous air tightness testing before delivery to rule out defective products.
Manufactured according to original dimension standards, enabling direct plug-and-play replacement without modification.

Compatible Truck Models & Application Scenarios

Genuine Howo Double-H Valve fits multiple HOWO heavy truck models and various transportation scenarios:

HOWO 371HP / 380HP 6×4 dump trucks and highway logistics tractors
HOWO 420HP / 430HP heavy-duty container trucks and bulk cargo transport vehicles
Engineering vehicles including HOWO concrete mixers and special transport trucks
Gearbox maintenance, troubleshooting of shifting failure and worn spare parts replacement

Packaging

All Howo Double-H Valves adopt targeted layered protective packaging according to product structural characteristics.
Complete Double-H Valve assemblies are wrapped with thick shockproof foam, anti-rust film and waterproof kraft paper to protect precision valve cores and sealing components.
Valves are packed in export cartons or fumigated wooden cases to avoid collision and corrosion during long ocean transportation.
Small supporting accessories such as sealing gaskets are separately packaged with waterproof inner bags.
Each package is marked with part numbers, applicable gearbox models, quantities and shipping marks for convenient customs clearance and inspection.

FAQ

Q1: What are the mainstream OEM part numbers of Howo Double-H Valve?

Our main stock models include WG2203210001 and WG2203210003, compatible with HW series transmissions for HOWO heavy trucks.

Q2: What faults will be caused by damaged Howo Double-H Valve?

Broken Howo Double-H Valve usually leads to air leakage, difficult switching between high and low gears, gear shifting jamming, and affects normal vehicle driving.