CAT | 16J‑51‑7578343 90‑00800 | Water Temperature Sensor Compatible with CAT

1. Product Overview & Wholesale Price Range

16J‑51‑7578343 90‑00800 Water Temperature Sensor is a key temperature‑monitoring component for excavator engine cooling circuit. It feeds real‑time coolant temperature signal to instrument panel. Common replacement scenarios include temperature gauge no display, false high‑temperature alarm, signal drift and sensor circuit failure.

• Factory Wholesale Price: $12 – $26 USD Direct factory price for excavator repair workshops
• Material Specifications: Brass threaded housing, precision thermistor chip, stable signal output, anti‑corrosion, good high‑temperature resistance, long working service life
• MPN / Part Parameter:16J‑51‑7578343, 90‑00800
• Fit Application: Engine cooling system compatible with CAT excavator
• MOQ & Bulk Discount: 1 Unit, favorable price for bulk maintenance orders
• Lead Time: 1‑3 working days, sufficient stock supports global logistics shipment
• Warranty: 12‑month replacement warranty, signal and temperature sensing test finished before shipment

2. Application Scope

This water temperature sensor is customized for excavator engine overhaul:

• Cooling System Overhaul: Direct replacement for original damaged water temperature sensor assembly.
• Electrical Fault Repair: Fix temperature gauge no‑readout, false high‑temp alarm, unstable signal malfunctions.
• Repair Workshop Usage: Standard taper thread size, simple installation, reliable temperature‑sensing performance.
• Overseas Parts Reseller: Stable stock quantity, complete QC documents to support cross‑border excavator spare‑part business.

3. Common Water Temperature Sensor Failure Troubleshooting

• Fault 1: Instrument Panel No Temperature Display
  Cause: Sensor internal chip burnout, wiring harness damage, poor connector contact.
  Solution: Install brand‑new water temperature sensor, inspect and repair wiring harness.
• Fault 2: False High‑Temperature Alarm Occurs Frequently
  Cause: Thermistor aging, coolant impurity corrosion, sensor parameter drift.
  Solution: Replace complete water temperature sensor assembly, check engine coolant condition.
• Fault 3: Temperature Signal Jumping & Drifting
  Cause: Connector oxidation, internal component aging, unstable power supply.
  Solution: Fit new water temperature sensor, clean plug‑in connector terminals.
• Fault 4: Sensor Thread Leakage
  Cause: Thread damage, improper torque during installation.
  Solution: Replace water temperature sensor, apply proper torque when mounting.

4. Matching Engine Spare Parts Recommendation

5. Frequently Asked Questions

Q1: How do I verify this sensor fits my excavator?
A: Confirm OEM numbers 16J‑51‑7578343 / 90‑00800, check taper thread dimension before placing orders.

Q2: What quality inspection will be carried out before shipment?
A: Each water temperature sensor completes temperature‑sensing and signal output testing before delivery.

Q3: What points need attention during installation?
A: Control installation torque, avoid thread damage, check for coolant leakage after installation.