Genuine VOLVO Water Temperature Sensor Assembly — NTC Coolant Thermal Monitoring Solution

The Genuine VOLVO Premium Heavy‑Duty Water Temperature Sensor Assembly (Part Numbers: 14505515 / VOE 14505515), also known as Engine Coolant Thermistor Probe, is a critical engine‑protection component for VOLVO B‑series, D‑series & E‑series excavators. Threaded into cylinder head or thermostat housing, it uses an NTC thermistor to send real‑time coolant temperature signals to E‑ECU and V‑ECU (11381435). It controls cold‑start fuel injection, cooling fan speed, overheat protection and dashboard temperature display (14710109). Replacing faulty sensors prevents engine overheating damage and unstable fuel combustion.

Core Technical Advantages

• High‑Precision NTC Thermistor: Rapid‑response thermal chip with ±0.5°C accuracy for stable readings under heavy engine loads.

• Solid Brass Corrosion‑Proof Probe: High‑conductivity forged brass resists antifreeze corrosion, cavitation and scale buildup.

• Double‑O‑Ring Hermetic Sealing: Silicone seals isolate internal wiring from high‑pressure coolant leakage.

• Vibration‑Resistant Polyamide Connector: Reinforced polymer plug ensures stable signal transmission under harsh working vibrations.

Technical Specifications

Master Application Fleet Guide

This coolant temperature sensor fits VOLVO B‑series, D‑series & E‑series construction and mining excavators:

• Compact‑Mid Excavators: EC135B, EC140B, EC160B, EC200B/D, EC210B, EC240B, EC250D, EC290B

• Heavy Mining Excavators: EC330B, EC350D, EC360B, EC380D, EC460B, EC700B, EC750D, EC950E

Critical B2B Procurement & Maintenance Guidelines

B2B Procurement Strategy

Long‑term thermal cycling, coolant scaling and vibration cause thermistor drift or failure, disabling overheat protection and risking engine seizure. Stock 14505515 for emergency engine‑protection orders. Cross‑sell with water pumps, thermostats, radiators and cooling hoses for complete cooling‑system overhaul.

Common Failure Symptoms

• Erratic or permanently cold dashboard temperature reading from damaged thermistor or internal wiring

• Black smoke, rough idle and poor fuel economy caused by continuous cold‑start over‑fueling

• False high‑temperature limp‑mode triggering due to shorted internal resistance sending wrong signals to ECU

Global Brand Cross‑Reference Matrix

All manufacturer names and model designations are for compatibility reference only. These genuine water temperature sensors provide reliable engine thermal protection for global VOLVO construction, quarry and mining machinery fleets.