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The WG9918580017 Under-Vehicle Start/Stop Switch Assembly is a premium, heavy-duty chassis control component engineered specifically for SINOTRUK Howo trucks, delivering reliable remote engine start and stop control for under-vehicle operations. As a trusted supplier of genuine Sinotruk howo parts, we offer this OEM-grade switch assembly as a direct replacement for the original factory unit. The WG9918580017 assembly ensures correct electrical switching, stable contact performance and dependable operation on Howo A7, T7H and related heavy-duty models.
Manufactured from high-strength engineering plastics, corrosion-resistant metal contacts and a sealed electrical connector, the WG9918580017 Under-Vehicle Start/Stop Switch Assembly is built to exact OEM dimensions. Its robust construction maintains correct switching action, resists vibration, dust, moisture and temperature extremes, and provides dependable performance under the constant use and electrical loads of commercial truck operation.
OEM WG9918580017 • Start/stop control • Sealed connector • Vibration resistant • Direct OEM fit
The WG9918580017 Under-Vehicle Start/Stop Switch Assembly is a critical control component in the chassis system of SINOTRUK Howo trucks. It allows the operator to start and stop the engine from below the vehicle, providing convenient control during maintenance, inspection and auxiliary equipment operation.
This WG9918580017 assembly is precision-manufactured to exact OEM dimensions. The housing is molded from heat-resistant engineering plastic, the internal contacts are silver-plated for reliable switching, and the connector matches the factory harness plug exactly. The unit is tested for correct contact resistance and switching force.
Common signs that an under-vehicle start/stop switch assembly needs replacement include failure to start or stop the engine from below, intermittent switch operation, a switch that feels loose or sticks, visible cracks in the housing, and corroded or loose terminals. Fitting a new WG9918580017 assembly restores reliable remote engine control and maintenance access.
Whether you are repairing a faulty start/stop circuit, replacing a worn switch or carrying out preventive maintenance on a fleet of Howo trucks, the WG9918580017 Under-Vehicle Start/Stop Switch Assembly delivers the quality, reliability and durability that SINOTRUK Howo professionals expect.
The WG9918580017 Under-Vehicle Start/Stop Switch Assembly is designed for SINOTRUK Howo trucks, with primary compatibility across the A7, T7H, HOWO 371 and HOWO 380 series. It is a direct OE replacement, so it plugs into the factory harness and mounts in the original under-vehicle location without modification.
This assembly is essential in applications where remote engine control and under-vehicle operation are critical, such as long-haul transport, construction, mining and municipal service. In these duties, the switch must maintain reliable contact action and resist vibration, dust, water and temperature extremes.
When replacing the start/stop switch assembly, it is recommended to inspect the control unit, wiring harness, fuse, relay and starter circuit for wear or damage. The WG9918580017 is designed to work with the factory electrical system, ensuring correct switching and reliable operation.
For fleets with multiple HOWO trucks, standardising on the WG9918580017 Under-Vehicle Start/Stop Switch Assembly simplifies electrical repair inventory and ensures the correct switch is available for scheduled maintenance or emergency repairs.
Replacing the WG9918580017 Under-Vehicle Start/Stop Switch Assembly is a simple procedure that requires basic electrical knowledge and hand tools. This work should be performed by a qualified technician. Begin by disconnecting the battery negative terminal to prevent accidental short circuits.
Locate the start/stop switch assembly under the vehicle, usually near the chassis frame or battery box. Disconnect the electrical connector from the old switch, noting the locking tab orientation. Remove the mounting bolts or bracket and withdraw the switch. Inspect the connector pins for corrosion or damage.
Fit the new WG9918580017 switch assembly onto the bracket and secure it with the original hardware. Reconnect the electrical connector until it clicks into place. Reconnect the battery and test the start and stop functions from below the vehicle, confirming reliable engine control.
For ongoing maintenance, periodically check that the switch is securely mounted and that the connector is free from moisture or dirt. If start/stop operation becomes intermittent, inspect the control unit and relay before replacing the switch again.
The WG9918580017 Under-Vehicle Start/Stop Switch Assembly is manufactured in an ISO 9001-certified facility using high-grade engineering plastics and precision electrical contacts. Raw materials are sourced from certified suppliers and undergo incoming inspection for dimensional accuracy, contact resistance and housing strength.
Each switch is assembled on precision lines and then tested for switching force, contact resistance, insulation resistance and high-potential withstand. The housing is inspected for correct fit and finish, and the connector is checked for pin alignment and retention. Every unit is subjected to a functional test before packing.
Random samples from each production batch undergo environmental testing, including thermal cycling, humidity exposure, vibration and water spray, to validate long-term reliability in heavy-duty truck applications. These tests ensure the switch continues to perform in the harsh conditions experienced by SINOTRUK Howo vehicles.
We back the WG9918580017 with a comprehensive 12-month warranty against material and workmanship defects. Our rigorous quality control ensures that every under-vehicle start/stop switch assembly delivers the same fit, function and durability as the original factory component.
The WG9918580017 Under-Vehicle Start/Stop Switch Assembly is a vital component for maintaining reliable remote engine control, maintenance access and operational efficiency on your Howo truck. A faulty switch causes failed start/stop operation, delayed maintenance and unnecessary downtime, especially when under-vehicle control is needed.
Manufactured from high-quality materials with sealed contacts and a robust housing, the WG9918580017 offers outstanding reliability, corrosion resistance and long-term durability. Its direct-fit design ensures straightforward installation and immediate compatibility with the factory start/stop system.
Fleet operators benefit from reduced maintenance downtime, lower repair costs and improved vehicle availability. Owner-operators gain peace of mind knowing their under-vehicle start/stop control is reliable and backed by a comprehensive warranty.
Order the WG9918580017 Under-Vehicle Start/Stop Switch Assembly today and keep your SINOTRUK Howo controllable and serviceable for years to come.
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