Komatsu 7861-93-4520 Coolant Level Sensor Replacement For D155A-6 D155AX-7 D275A-5 D375A-5 D475A-5 D85EX-15

7861-93-4520 Coolant Level Sensor Replacement (Aftermarket) | 7861934520

This product is an aftermarket replacement for Komatsu part number 7861-93-4520 (7861934520). It is commonly used as a coolant level sensor / water level sensor on Komatsu heavy equipment to monitor coolant level and help prevent overheating alarms and downtime.

Key Features

Sealed structure for harsh working environments

Stable signal output for coolant level monitoring

Replacement-grade manufacturing & functional testing

MOQ 1 supported, small order allowed

Technical Specifications

Operating Range: Calibrated to Komatsu OEM pressure specifications

Connector Type: Standard 2-pin plug-style electrical connector

Mounting: Threaded fitment for OEM-standard installation

Typical Failure Symptoms (When to Replace)

• Coolant level warning stays on even after refill

• Intermittent alarms during operation

• Abnormal coolant warning after long working hours

• Overheating protection triggers unexpectedly

FAQ

Q1: Is this a genuine Komatsu part?

A: No. This is an aftermarket replacement. OEM numbers are for reference only.

Q2: Will it fit all D155A / D275A / D375A / D475A machines?

A: Not always. Different years and regions may use different connectors or sensor versions. Please confirm by photos.

Q3: What if I can’t read the old part number?

A: Send photos of the old sensor, connector, and installation position; we can help identify it.