Water Level Alarm Switch M51-3825010 M18×1.5 2-Pin Plastic Float Type for Chenglong 507609 Heavy Trucks

Product Appearance Description

This water level alarm switch is made of black engineering plastic, consisting of a float probe, threaded mounting seat, and waterproof connector, with a compact and durable structure.

1.The probe features a long rod with a float that moves up and down with the coolant level to monitor changes in real time.

2.The middle section is a hexagonal threaded mounting seat with M18×1.5 specification for easy installation and strong sealing.

3.The end is an integrated waterproof 2-pin connector that fits the original vehicle interface, offering excellent water and dust resistance for complex engine compartment environments.

Product Function Description

1.Core Function: Monitors the liquid level in the coolant expansion tank in real time and triggers an alarm signal when the level drops below the safe value.

2.Signal Transmission: When the liquid level is low, the switch sends an electrical signal to the vehicle ECU or instrument panel, activating the warning light or buzzer to alert the driver to add coolant in time.

3.Fault Warning: Effectively prevents engine overheating and damage caused by insufficient coolant, improving vehicle operation safety.

4.Compatibility: Designed for Balong 507 / Chenglong 609 models, it can directly replace the original part to solve problems such as non-functional or false liquid level alarms.

Applicable Models

Brand/Manufacturer	Model Series	Application Scenario
Chenglong	Balong 507 / Chenglong 609 Series	Heavy-duty trucks, commercial vehicles, logistics trucks

Parameter

Item	Specification/Details
Brand Name	Jiechuang
Model Number	HS-3120
OEM Part Number	M51-3825010
Product Type	Water Level Alarm Switch (2-Pin, Plastic)
Connector	2-Pin Plastic Plug Connector with threaded mounting
Mounting Thread	M18×1.5
Housing Material	Engineering Plastic (float type probe)
Compatible Models	Chenglong 507/609 Heavy Trucks
Protection Grade	IP67
Warranty Period	12 months or 100,000 km (whichever comes first)

Product Details

Product Specifications and Trade Terms

Item	Specification/Details
Warranty Period	12 months or 100,000 km (whichever comes first)
Payment Terms	T/T, PayPal, Western Union
Port of Loading	Ningbo Port or Shanghai Port
Lead Time	7-15 working days after deposit
Packing	50 pcs per carton with foam
Shipping Method	By sea / air / express (DHL/FedEx/UPS)
Sample Policy	Free samples, buyer pays freight
After-Sales Support	Itemcement for defective items

Supplementary Note

1.Made of corrosion-resistant plastic float probe, it can work stably in coolant for a long time, is not easy to scale or damage, and has a long service life.

2.The M18×1.5 threaded mounting seat with a sealing washer can effectively prevent coolant leakage and ensure stable system pressure.

3.Please check the thread specification, plug type and vehicle model before installation to ensure compatibility. After installation, check if the liquid level alarm function works properly.

4.It is recommended to be installed by professional maintenance personnel. After installation, a liquid level test is required to ensure the switch trigger logic is normal.