Product Description

WG9925821031 Motor Assembly is installed in heavy truck electrical control and auxiliary operating systems. The side-mount installation structure is designed for stable positioning and reliable operation under vibration, heavy-load transport, and long-distance commercial vehicle applications.

Internal motor wear, carbon brush aging, bearing seizure, electrical overload, or connector corrosion may cause abnormal operation, slow response, electrical faults, overheating, or complete motor failure.

This motor assembly is widely used in export fleet maintenance, commercial truck electrical repair, engineering vehicle overhaul, and heavy truck aftermarket service.

Product Overview

This motor assembly is commonly used on SINOTRUK HOWO T7H, HOWO T5G, and SITRAK heavy truck electrical systems equipped with side-mount motor installation structures for auxiliary control and actuator applications.

Technical Parameters

Fitment Models

• SINOTRUK HOWO T7H Tractor Truck

• HOWO T5G Cargo Truck

• SITRAK C7H Tractor Truck

• SITRAK G7 Heavy Truck

Fitment Verification

Please verify before purchase:

• VIN

• OEM No

• Motor installation position

• Mounting hole layout

• Side-mount structure

• Voltage

• Connector plug type

• Rotation direction

• Wiring harness configuration

• Serial plate

OEM Cross Verification (Only SINOTRUK / SHACMAN / FAW / Weichai)

Direct Fit

• HOWO T7H electrical systems

• HOWO T5G auxiliary control systems

• SITRAK side-mount motor platforms

Can Be Adapted

• SITRAK G7 depending on mounting bracket structure

• SHACMAN electrical systems after connector verification

Similar But Not Compatible

• Bottom-mount motor assemblies

• Different voltage motors

• Different connector structure motors

• Different rotation direction motors

Common Field Failure Case

Case 1

Vehicle: HOWO T7H Tractor Truck
Mileage: 530,000 KM
Problem: Motor slow response and abnormal noise
Root Cause: Internal bearing wear caused unstable motor operation
Solution: Replaced WG9925821031 motor assembly
Loss / Benefit: Restored electrical system stability and reduced operational downtime

Case 2

Vehicle: SITRAK C7H Fleet Truck
Mileage: 680,000 KM
Problem: Motor overheating during continuous operation
Root Cause: Carbon brush aging and electrical overload
Solution: Installed OE-standard side-mount motor assembly
Loss / Benefit: Improved electrical reliability and reduced maintenance frequency

Case 3

Vehicle: Export Fleet Procurement Project
Mileage: Fleet Service Application
Problem: Wrong mounting hole structure supplied
Root Cause: Different motor installation version mismatch
Solution: Verified OEM number and side-mount dimensions before shipment
Loss / Benefit: Avoided installation failure and repeat export freight cost

Wrong Part & Export Transport Risk Control

Supplier Stability & Procurement Value

Stable supply of WG9925821031 helps:

• Reduce wrong-part delivery risk

• Lower vehicle electrical downtime

• Reduce repeated installation cost

• Improve fleet operational reliability

• Reduce repeat sea freight expenses

• Improve maintenance efficiency

• Support stable wholesale procurement

• Ensure consistent export delivery cycles

Related Truck Parts

Directly Associated Parts

• WG9925771010 Combination Switch

• WG9716582301 Cab Wiring Harness

• WG9925583010 Central Electrical Box

Same System Parts

• WG9716582211 Fuel Combination Instrument

• WG9918581111/1 Dashboard Instrument

• AZ9925820005 Auxiliary Control Module

Frequently Ordered Together

• Electrical connector plug

• Motor mounting bracket

• Wiring harness clips

• Fuse protection module

Often Forgotten Parts

• Mounting bolts

• Connector lock buckle

• Waterproof sealing ring

• Ground wire terminal

Contact

William Du
Heavy Truck Spare Parts Supply
SINOTRUK | SHACMAN | FAW | Weichai Export Parts
WhatsApp / WeChat: +86 19050562894
Email: Sales22@chinatruck.cc