IZUMI RIK Water Temp Sensor 4436537 for Isuzu 6HK1 Construction Machinery Engine Spare Parts

IZUMI RIK Water Temperature Sensor 4436537 for Isuzu 6HK1 Engine

The water temperature sensor is an essential engine monitoring component that measures coolant temperature in real time and supplies a calibrated resistance signal to the engine ECU and dashboard temperature gauge. Part number 4436537, manufactured by IZUMI RIK, is the OEM-specified sensor for the Isuzu 6HK1 6-cylinder diesel engine — a powerplant widely used in construction machinery, excavators, truck cranes, and large-capacity forklifts. A malfunctioning sensor causes erratic temperature gauge readings, incorrect fuel injection timing, failure of the overheat alarm system, and potential engine damage from undetected coolant temperature rise.

Built with a precision NTC thermistor encased in a brass body, the IZUMI RIK sensor delivers fast thermal response and stable resistance output across the full engine operating range of -40°C to +150°C. The threaded body provides a reliable seal in the cylinder head or water outlet housing, while the weatherproof electrical connector maintains signal integrity in high-vibration, high-humidity construction environments. The thermistor element is factory-calibrated to Isuzu OEM specifications, ensuring plug-and-play compatibility without recalibration.

Designed for the Isuzu 6HK1 engine found in Hitachi and Sumitomo excavators, Tadano mobile cranes, and select large-capacity Toyota and TCM forklifts, this sensor is a high-demand service part for heavy equipment fleets. As an IZUMI RIK OEM component, part number 4436537 delivers the same quality and calibration as the original factory-installed sensor. For equipment maintenance operations, replacing the temperature sensor at the first sign of erratic readings prevents costly overheating damage to the cylinder head and head gasket. Installation is straightforward — use appropriate thread sealant and torque to specification.

Kingstream supplies OEM-grade engine sensors with calibration verification. Browse our forklift engine parts for temperature sensors, oil pressure sensors, speed sensors, and complete engine sensor kits. For Isuzu OEM parts reference, visit Isuzu Industrial Engines. Worldwide shipping available.

Technical Specifications

• Part Number: 4436537
• Brand: IZUMI RIK (OEM)
• Product Type: Water Temperature Sensor / Thermistor
• Sensor Type: NTC thermistor (negative temperature coefficient)
• Body Material: Brass
• Operating Range: -40°C to +150°C
• Application: Isuzu 6HK1 diesel engine coolant monitoring

Compatible Equipment and Engines

Replace your faulty sensor and protect your engine from overheating. This water temperature sensor 4436537 ships from stock with calibration verification. Worldwide delivery from Kingstream.