4HK1 Water Temperature Sensor – Isuzu Engine Parts (OEM Size) for Construction/Agriculture

Product Details

Product Overview

This high-quality water temperature sensor is specifically designed for the Isuzu 4HK1 diesel engine platform, a common power source in construction, agriculture, genset, marine, and material handling equipment. The sensor provides critical coolant temperature data to the engine control unit (ECU) for optimal fuel injection timing, combustion efficiency, and emission control.

Manufactured to OEM specifications, this sensor ensures a direct, plug-and-play replacement for the original component. While fitment is primarily confirmed for the 4HK1 engine, it may also be compatible with select Isuzu industrial and off-highway applications. We recommend verifying your existing part number and engine model before purchase.

As a core component of the engine management system, a properly functioning water temperature sensor is vital for preventing overheating, reducing cold-start emissions, and maintaining overall engine reliability. This sensor is a cost-effective, OEM-grade replacement from.

Key Features & Benefits

• OEM-Grade Fitment: Engineered to match the exact dimensions and electrical characteristics of the original Isuzu 4HK1 water temperature sensor, ensuring a seamless installation without modifications.
• Precise Temperature Monitoring: Delivers accurate coolant temperature readings to the ECU, enabling precise fuel metering and injection timing for improved fuel economy and reduced emissions.
• Durable Construction: Built with corrosion-resistant materials and a sealed housing to withstand vibration, thermal cycling, and exposure to coolant and engine contaminants.
• Enhanced Engine Protection: Provides the ECU with real-time data to activate cooling fans, adjust timing, and trigger overheat warnings, protecting your engine from costly thermal damage.
• Rigorous Quality Control: Each sensor undergoes outgoing inspection and machinery test reporting to verify electrical resistance and sealing integrity before shipping.
• Versatile Application: Suitable for a wide range of equipment powered by the 4HK1 engine, including excavators, loaders, generators, agricultural tractors, and marine propulsion systems.
• 6-Month Warranty: Backed by a 6-month warranty and online technical support, providing peace of mind for your procurement and maintenance operations.

Technical Specifications

OEM Cross-Reference

This water temperature sensor replaces the following original Isuzu part numbers. Please confirm your existing part number for compatibility:

• Isuzu OEM: 8-98023-526-0, 8-98023-526-1, 8-98023-526-2
• Alternative References: 897102-1020, 897102-1030

Note: This list is based on common cross-references for the 4HK1 engine platform. Always verify with your specific engine serial number and original part.

Compatibility

This sensor is commonly used for the following applications. Fitment is inferred based on engine model:

• Engine Platforms: Isuzu 4HK1 (4HK1-TC, 4HK1-X)
• Common Applications:
  • Construction: Excavators (e.g., Isuzu-based models), Wheel Loaders, Bulldozers
  • Agriculture: Tractors, Harvesters
  • Industrial: Generator Sets (Gensets), Compressors
  • Marine: Propulsion and auxiliary engines
  • Material Handling: Forklifts, Telehandlers

Note: This sensor is not designed for automotive (on-highway truck) applications unless the specific vehicle uses a 4HK1 industrial engine variant.

Global Supply & Distribution

We maintain a robust global supply chain to serve B2B buyers worldwide. Our stock of Isuzu 4HK1 water temperature sensors is ready for immediate dispatch.

• Shipping Capabilities: We ship via DHL, FedEx, UPS, TNT, and sea freight (FCL/LCL) to over 50 countries.
• Major Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, France), Asia-Pacific (Australia, Japan, Singapore, Indonesia), Middle East (UAE, Saudi Arabia), and Africa (South Africa, Nigeria).
• Fast Delivery: Standard air freight delivers to major industrial centers (e.g., Houston, Rotterdam, Dubai, Shanghai) within 5-8 working days. Sea freight options are available for bulk orders.
• Export Compliance: All products are exported under standard international trade terms (FOB, CIF, EXW) and comply with relevant customs documentation.

Quality Assurance

Quality is paramount for critical engine management components. Our sensors are manufactured under strict process controls.

• Manufacturing Standards: Produced in an ISO 9001:2015 certified facility, ensuring consistent quality and traceability.
• Testing Procedures: Each sensor undergoes 100% outgoing inspection, including resistance check at multiple temperature points (e.g., 20°C, 80°C) and a leak test to verify seal integrity. A Machinery Test Report is provided with each shipment.
• Warranty: All sensors are backed by a 6-month warranty against manufacturing defects. Our technical team provides online support for troubleshooting and installation guidance.
• Packaging: Individually packed in anti-static plastic bags, then secured in boxes and export-grade cartons to prevent damage during transit.

FAQ

Q1: How do I confirm this sensor fits my 4HK1 engine?
A: First, locate the part number on your original sensor (often stamped on the hex or connector). Compare it to our OEM cross-reference list (e.g., 8-98023-526-0). Second, verify your engine model (e.g., 4HK1-TC) from the engine nameplate. While this sensor is designed for the 4HK1 series, variations exist between industrial and marine versions. If your number is not listed, please contact us with your engine serial number and original part number for verification.

Q2: What are the symptoms of a failing water temperature sensor?
A: Common symptoms include: (1) Hard starting, especially in cold weather, due to incorrect fuel enrichment. (2) Poor fuel economy and black smoke, as the ECU defaults to a rich mixture. (3) Overheating or the cooling fan running constantly. (4) An illuminated Check Engine light with codes related to coolant temperature circuit (e.g., P0115, P0117, P0118). Replacing a faulty sensor with this OEM-grade unit will restore proper ECU data and engine performance.

Q3: Is installation straightforward, and what tools are needed?
A: Installation is generally a simple DIY task for a qualified mechanic. Typical steps: (1) Drain coolant below the sensor level. (2) Disconnect the electrical connector. (3) Use a socket (usually 19mm or 22mm) to remove the old sensor. (4) Apply thread sealant (Teflon tape) to the new sensor threads. (5) Torque to manufacturer specs (typically 15-25 Nm). (6) Refill coolant and bleed air. Always refer to your equipment’s service manual for exact procedures and torque values to avoid damage. If you are unsure, consult a professional technician.