| Parameter | Specification |
|---|---|
| Product Name | Speed Sensor (Engine Speed Sensor) |
| COGENG Part Number | 4265372 |
| OEM Equivalent | Hitachi 4265372 |
| Product Type | Magnetic Pickup / Inductive Speed Sensor |
| Sensor Type | Variable reluctance (magnetic) |
| Output Signal | AC voltage (frequency proportional to engine speed) |
| Application | Engine RPM monitoring / Crankshaft position |
| Compatible Models | Hitachi EX100-2/3, EX120-2/3, EX200-2/3, EX220-2/3/5, EX230-5 |
| Material | Iron + Rubber (seals: NBR) |
| Packing | PP bag inside, carton box outside |
| Place of Origin | Guangdong, China |
| Brand Name | COGENG |
| Certification | ISO9001 |
| Supply Capacity | 500 PCS |
| Brand | Part Number |
|---|---|
| COGENG | 4265372 |
| Hitachi | 4265372 |
| John Deere | 4265372 (Interchange) |
| Interchange | 4265373, 4265374, 4265375, 4265376 |
| Model | Series | Engine | Application |
|---|---|---|---|
| EX100-2 | Dash 2 | Isuzu / Hitachi | Speed / RPM sensor |
| EX100-3 | Dash 3 | Isuzu / Hitachi | Speed / RPM sensor |
| EX100-5 | Dash 5 | Isuzu / Hitachi | Speed / RPM sensor |
| Model | Series | Engine | Application |
|---|---|---|---|
| EX120-2 | Dash 2 | Isuzu / Hitachi | Speed / RPM sensor |
| EX120-3 | Dash 3 | Isuzu / Hitachi | Speed / RPM sensor |
| EX120-5 | Dash 5 | Isuzu / Hitachi | Speed / RPM sensor |
| Model | Series | Engine | Application |
|---|---|---|---|
| EX200-2 | Dash 2 | Isuzu / Hitachi | Speed / RPM sensor |
| EX200-3 | Dash 3 | Isuzu / Hitachi | Speed / RPM sensor |
| EX200-5 | Dash 5 | Isuzu / Hitachi | Speed / RPM sensor |
| Model | Series | Engine | Application |
|---|---|---|---|
| EX220-2 | Dash 2 | Isuzu / Hitachi | Speed / RPM sensor |
| EX220-3 | Dash 3 | Isuzu / Hitachi | Speed / RPM sensor |
| EX220-5 | Dash 5 | Isuzu / Hitachi | Speed / RPM sensor |
| Model | Series | Engine | Application |
|---|---|---|---|
| EX230-5 | Dash 5 | Isuzu / Hitachi | Speed / RPM sensor |
| EX230-5C | Dash 5 | Isuzu / Hitachi | Speed / RPM sensor |
| Engine Model | Displacement | Cylinders | Found In |
|---|---|---|---|
| Isuzu 4BD1T | 3.9L | 4-cylinder | EX100, EX120 |
| Isuzu 6BD1T | 5.8L | 6-cylinder | EX200, EX220 |
| Hitachi original engines | Various | Various | EX series |
Note: Verify compatibility with your equipment model, engine serial number, and production year before ordering. Contact COGENG with your machine details for exact application verification.
| Component | Function |
|---|---|
| Sensor Type | Variable reluctance (magnetic pickup) |
| Target | Flywheel ring gear teeth or crankshaft tone wheel |
| Output | AC voltage sine wave (frequency = engine RPM × number of teeth) |
| ECU Use | Engine speed calculation, fuel injection timing, protection |
✔ OEM Replace Number: 4265372, direct fit for Hitachi EX series excavators
✔ Dual Function: Can be used as engine speed sensor or hydraulic pump revolution sensor
✔ Precision Signal: Accurate RPM detection for engine and swing/pump control
✔ Wide Compatibility: Works with EX100-2, EX120-3, EX200-3, EX120-5, EX200-5, EX150, EX180, EX220, EX230, EX270, EX300, EX350
✔ Durable Construction: Heat and vibration resistant for long service life in harsh conditions
✔ Plug & Play: Easy installation, no calibration required
Q: What Hitachi models use the 4265372 revolution speed sensor?
A: The COGENG 4265372 revolution speed sensor is a direct OEM replacement designed for Hitachi EX100-2, EX100-3, EX120-2, EX120-3, EX200-2, EX200-3, EX220-2, EX220-3, EX220-5, and EX230-5 excavator models. This sensor is typically used for monitoring engine speed and providing critical RPM data to the machine's electronic control system. Always verify this part number against your machine's parts manual or the original sensor's identification markings to confirm exact compatibility before ordering.
Q: What are the symptoms of a failing revolution speed sensor on a Hitachi EX series excavator?
A: Common symptoms include engine stalling or failure to start, intermittent engine shutdowns, erratic or incorrect RPM readings on the monitor panel, rough running or misfiring, active diagnostic trouble codes related to the speed sensor circuit, the engine entering a derate or limp mode, or loss of throttle response. A faulty speed sensor can cause significant engine performance issues and should be replaced promptly to avoid potential engine damage.
Q: How does the revolution speed sensor affect engine operation?
A: The revolution speed sensor continuously monitors engine rotational speed (RPM) and transmits real-time data to the engine ECU. This critical information is used to control fuel injection timing, fuel delivery quantity, and engine protection functions. Without accurate RPM data, the engine ECU cannot properly manage combustion or protect the engine from overspeed or underspeed conditions.
Q: What material construction is used for this revolution speed sensor?
A: The COGENG 4265372 revolution speed sensor is constructed with a durable metal body and high-quality rubber components designed to withstand the demanding heat, vibration, and environmental conditions of the engine compartment. The materials are selected to meet or exceed OEM specifications for durability and long service life.
Q: What Hitachi models use the 4265372 revolution speed sensor?
A: The COGENG 4265372 revolution speed sensor is a direct OEM replacement designed for Hitachi EX100-2, EX120-3, and EX200-3 excavator models. It is also compatible with EX100-3, EX120-2, EX200-2, EX220-2, EX220-3, EX220-5, and EX230-5 models where this sensor part number is specified. This sensor monitors engine rotational speed and provides critical RPM data to the engine control system. Always verify this part number against your machine's parts manual or the original sensor's identification markings to confirm exact compatibility before ordering.
Q: What are the symptoms of a failing revolution speed sensor on a Hitachi EX series excavator?
A: Common symptoms include engine stalling or failure to start, intermittent engine shutdowns, erratic or incorrect RPM readings on the monitor panel, rough running or misfiring, active diagnostic trouble codes related to the speed sensor circuit, the engine entering a derate or limp mode, or loss of throttle response. A faulty speed sensor can cause significant engine performance issues and should be replaced promptly to avoid potential engine damage.
Q: How does the revolution speed sensor affect engine operation?
A: The revolution speed sensor continuously monitors engine rotational speed (RPM) and transmits real-time data to the engine ECU. This critical information is used to control fuel injection timing, fuel delivery quantity, and engine protection functions. Without accurate RPM data, the engine ECU cannot properly manage combustion or protect the engine from overspeed or underspeed conditions.
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