Xi'an Jieguan Auto Parts Co., Ltd.
| Working Voltage | 12‑24V DC |
| Payment Terms | T/T,D/P,D/A,L/C |
| Product Name | Low Water Level Alarm Warning Sensor |
| Delivery Time | 5-8 work days |
| Vehicle System | Bus Engine System, Cooling System |
| Condition | Brand New |
| Supply Ability | 5000 pieces per month |
| Connector | Waterproof 2‑pin connector |
| Packaging Details | Neutral individual paper box with foam shock‑proof protection |
| Application | Special for Bus & Coach |
| Model No. | 3825‑00009PT |
| Place of Origin | China |
| Model Number | 3825‑00009PT |
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Product Specification
| Working Voltage | 12‑24V DC | Payment Terms | T/T,D/P,D/A,L/C |
| Product Name | Low Water Level Alarm Warning Sensor | Delivery Time | 5-8 work days |
| Vehicle System | Bus Engine System, Cooling System | Condition | Brand New |
| Supply Ability | 5000 pieces per month | Connector | Waterproof 2‑pin connector |
| Packaging Details | Neutral individual paper box with foam shock‑proof protection | Application | Special for Bus & Coach |
| Model No. | 3825‑00009PT | Place of Origin | China |
| Model Number | 3825‑00009PT |
Purpose
The 3825‑00009PT coolant water level sensor is specially manufactured for buses and coaches. It is mounted on the engine expansion tank to continuously monitor the real‑time liquid level of engine coolant. Once the coolant is lower than the safe threshold, it transmits alarm signal to the bus instrument panel to remind drivers to replenish coolant timely. It effectively avoids engine overheating, cylinder scuffing and other serious faults caused by insufficient cooling water, and ensures safe and stable operation of passenger vehicles.
| Specification | Details |
| Product Name | Coolant Water Level Sensor, Low Water Level Alarm Warning Sensor |
| Model No. | 3825‑00009PT |
| Application | Special for Bus & Coach |
| Vehicle System | Bus Engine System, Cooling System |
| Installation Position | Engine expansion tank / auxiliary water tank |
| Material | Brass Sensor Body, Float, PVC Cable, Waterproof Plastic Connector |
| Function | Real‑time coolant level detection, low‑level alarm signal output to dashboard, prevent engine overheating due to water shortage |
| Connector | Waterproof 2‑pin connector |
| Cable | Black PVC integrated wiring harness |
| Thread | Brass external thread |
| Working Voltage | 12‑24V DC |
| Working Temperature | ‑40℃ ~ +125℃ |
| Feature | Float‑type induction, stable signal output, waterproof, anti‑vibration, anti‑corrosion |
| Advantage | High sensitivity, low false‑alarm rate, plug‑and‑play, easy for replacement |
| Packaging | Neutral individual paper box with foam shock‑proof protection |
| MOQ | Negotiable |
| Supply Capacity | 5000 PCS / Month |
| Applicable Scenario | Bus after‑market repair & spare parts replacement |
Product Features
This sensor adopts brass main body with float‑type sensing structure. It is equipped with integrated black PVC wiring harness and waterproof 2‑pin connector. Designed for complex working conditions of bus engine compartment, it can resist vibration, water splash and corrosion. It supports 12‑24V wide‑voltage working range, adapts to most bus electrical systems. Compact structure with standard brass external thread, convenient for direct replacement of original parts.
Product Advantages
1. Float‑type induction brings high response sensitivity, quick trigger for low‑liquid‑level alarm.
2. Excellent waterproof and vibration‑resistant performance, suitable for long‑term operation in harsh engine cabin environment.
3. Stable signal output, low false‑alarm rate, reliable monitoring performance.
4. Plug‑and‑play design, no complicated modification required during installation.
5. Strictly tested according to commercial‑vehicle spare‑part standards, long service life and low failure rate.
6. Directly compatible with mainstream bus models, easy for after‑sales maintenance and spare‑parts supply.
Installation Steps
1. Confirm that the engine has been fully cooled. Release residual pressure inside the expansion tank before starting installation.
2. Unscrew the old sensor from the threaded hole of the expansion tank.
3. Screw the new 3825‑00009PT sensor clockwise into the threaded hole, tighten moderately. Do not apply excessive torque to prevent brass thread cracking.
4. Align and insert the waterproof 2‑pin connector into the corresponding vehicle wiring plug.
5. Add coolant to the specified normal liquid level.
6. Switch on the bus power supply and test whether the low‑water‑level alarm function works normally.
Notes
1. Installation and disassembly must be completed under cold‑engine condition. Hot coolant will cause scald hazard. Never operate when the engine is hot.
2. Do not over‑tighten the sensor thread; excessive force will damage the brass thread.
3. Keep wiring harness and connector far away from high‑temperature exhaust components, avoid cable aging and melting.
4. Regularly check the threaded joint for water seepage. Replace the sensor immediately if leakage occurs.
5. Use qualified coolant. Impurities and sediments attaching to the float will cause signal deviation or false alarm.
6. Do not pull or drag the wiring harness forcibly during installation and maintenance.
7. Do not modify or cut the original harness arbitrarily, otherwise the alarm function may fail.
Company Details
Business Type:
Manufacturer,Trading Company
Year Established:
2010
Total Annual:
80000000-90000000
Employee Number:
48~50
Ecer Certification：
Verified Supplier
Xi'an Jieguan Trading Co., Ltd.Founded 22 years ago, we are an integrated manufacturer & foreign trade enterprise specializing in full-range commercial vehicle spare parts, located in Xi'an, Shaanxi Province, China. Our company owns a 300-square-meter modern office space, paired with a self... Xi'an Jieguan Trading Co., Ltd.Founded 22 years ago, we are an integrated manufacturer & foreign trade enterprise specializing in full-range commercial vehicle spare parts, located in Xi'an, Shaanxi Province, China. Our company owns a 300-square-meter modern office space, paired with a self...
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