4HK1 Revolution Speed Sensor Suitable for Isuzu Engine Parts, OEM Size

Product Details

Product Overview

This high-precision Revolution Speed Sensor is specifically designed for Isuzu 4HK1 diesel engines, commonly utilized in a diverse range of heavy-duty applications including construction equipment, industrial machinery, agricultural tractors, generator sets, marine propulsion, and material handling systems. As a critical component of the engine management system, this sensor accurately monitors the rotational speed of the crankshaft or camshaft, providing essential data to the ECU for precise fuel injection timing and engine performance optimization.

Manufactured to meet OEM size and performance specifications, this 4HK1 speed sensor ensures a direct fit and reliable operation. It is a direct replacement for the original equipment part, helping to restore engine efficiency, reduce emissions, and prevent starting or running issues caused by a faulty sensor. This part is an ideal solution for maintenance and repair workshops, equipment dealers, and fleet operators seeking a dependable, cost-effective alternative to the OEM component.

As a vital part of the Isuzu 4HK1 engine family, this sensor is sourced from, a supplier based in Guangdong, China, with a focus on providing quality aftermarket engine components for global markets.

Key Features & Benefits

• OEM Specification: Manufactured to the exact OEM size and design for the Isuzu 4HK1 engine, ensuring a seamless, bolt-on replacement without modifications.
• Precise Signal Output: Delivers accurate and stable RPM data to the Engine Control Unit (ECU), enabling optimal fuel injection timing and combustion efficiency.
• Durable Construction: Built with high-grade materials to withstand the harsh operating conditions of diesel engines, including vibration, heat, and oil contamination.
• Restored Engine Performance: Replacing a worn or failed speed sensor helps resolve common issues such as rough idling, hard starting, poor acceleration, and unexpected stalling.
• Broad Application Range: Suitable for a wide variety of equipment types, from excavators and loaders to generators and marine engines, making it a versatile stock item.
• Cost-Effective Solution: Offers a high-quality aftermarket alternative to the expensive OEM part, providing significant savings without compromising on reliability.
• Easy Installation: Designed as a direct drop-in replacement, simplifying the repair process and reducing vehicle downtime.

Technical Specifications

OEM Cross-Reference

This Revolution Speed Sensor is designed as a direct aftermarket replacement for the original Isuzu part. While the specific OEM part number for the 4HK1 sensor may vary by application (e.g., 8-98023-526-0 or similar), this unit is manufactured to match the original equipment specifications. Please verify your existing part number or consult the cross-reference below for compatibility.

• Compatible OEM Numbers: 8-98023-526-0, 8-98023526-0 (and similar variants for the Isuzu 4HK1)
• Alternative Part Numbers: HDPARTS-4HK1-RS-001

Note: We recommend comparing the physical dimensions and connector type of this sensor with your original part before installation.

Compatibility

This Revolution Speed Sensor is commonly used for the following applications:

• Engine Models: Isuzu 4HK1 (including 4HK1-TC, 4HK1-X, and other variants)
• Equipment Types: Excavators, wheel loaders, bulldozers, forklifts, agricultural tractors, diesel generators, marine engines, and industrial pumps.
• Vehicle Applications: Commonly found in Isuzu NPR, NQR, NRR trucks and other heavy-duty vehicles using the 4HK1 engine.

Fitment is application-specific. Please confirm your engine model and sensor location prior to purchase.

Global Supply & Distribution

is committed to serving the global B2B market with efficient logistics and reliable supply chains. We offer worldwide shipping capabilities to meet the demands of international buyers.

• Major Markets Served: North America, Europe, Southeast Asia, the Middle East, Africa, and Oceania.
• Shipping Options: Fast delivery via air freight, sea freight, or express courier (DHL, FedEx, UPS, TNT) to major ports and industrial centers worldwide.
• Export Experience: Our team is experienced in international trade compliance, including proper documentation (commercial invoice, packing list, certificate of origin) and customs clearance support.
• Bulk Orders: We welcome wholesale, OEM/ODM, and custom packaging inquiries for large volume orders.

Quality Assurance

We prioritize quality and reliability in every component we supply. This Revolution Speed Sensor undergoes rigorous testing to ensure it meets industry standards.

• Manufacturing Standards: Produced in ISO-certified facilities in Guangdong, China, following strict quality control procedures.
• Testing Procedures: Each sensor is tested for electrical continuity, signal output accuracy, and resistance to temperature and vibration. A Machinery Test Report and Video Outgoing Inspection are available upon request.
• Warranty: All sensors come with a 6-month warranty against manufacturing defects. After-warranty service includes online technical support.
• Certification: While specific certifications may vary, our parts are designed to meet or exceed OEM performance specifications.

FAQ

Q1: How do I know if this 4HK1 speed sensor is compatible with my specific engine?
A: This sensor is designed for the Isuzu 4HK1 engine series. To confirm fitment, check your existing sensor’s part number (often stamped on the sensor body), physical connector shape, and mounting location. The sensor typically mounts near the crankshaft pulley or flywheel housing. If your engine is a 4HK1 variant, this sensor is highly likely to be compatible. We recommend comparing the dimensions and connector type with your original part.

Q2: What are the common symptoms of a failing revolution speed sensor on a 4HK1 engine?
A: Common symptoms include: the engine cranks but will not start, intermittent stalling, rough idling, lack of power, erratic acceleration, or the Check Engine Light (CEL) illuminating with codes related to crankshaft or camshaft position (e.g., P0335, P0340). A faulty sensor can also cause the engine to enter a limp-home mode, limiting RPM. Replacing it with this high-quality sensor should restore normal operation.

Q3: What is the installation procedure for this sensor?
A: Installation is straightforward. First, disconnect the battery negative terminal. Locate the sensor on the engine block (near the crankshaft or camshaft). Disconnect the electrical connector and remove the mounting bolt. Carefully pull the old sensor out (it may be tight). Clean the mounting bore. Apply a small amount of engine oil to the O-ring of the new sensor and push it in until it seats. Tighten the mounting bolt to the manufacturer’s specified torque. Reconnect the electrical connector and battery. Clear any stored fault codes with a diagnostic scanner. Always consult your equipment’s service manual for exact torque specs and procedures.