| Parameter | Specification |
|---|---|
| Product Name | Speed Sensor (Engine Speed Sensor) |
| COGENG Part Number | 7861-93-2330 |
| OEM Equivalent | Komatsu 7861-93-2330 |
| Product Type | Magnetic Pickup / Inductive Speed Sensor |
| Sensor Type | Variable reluctance (magnetic) |
| Output Signal | AC voltage (frequency proportional to speed) |
| Application | Engine RPM monitoring / Crankshaft position |
| Compatible Engines | Komatsu S4D102E, S6D102E, SA6D140, SA6D95L, SAA6D108E |
| Compatible Excavators | Komatsu PC120, PC130, PC150 Series |
| 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 | 7861-93-2330 |
| Komatsu | 7861-93-2330 |
| Interchange | 7861-93-2331, 7861-93-2332, 7861-93-2333, 600-825-1510 |
| Parameter | Specification |
|---|---|
| Displacement | 4.0L (244 cu in) |
| Cylinders | 4 in-line |
| Applications | PC120, PC130 excavators |
| Speed Sensor Location | Flywheel housing |
| Parameter | Specification |
|---|---|
| Displacement | 6.0L (366 cu in) |
| Cylinders | 6 in-line |
| Applications | PC150 excavators |
| Speed Sensor Location | Flywheel housing |
| Parameter | Specification |
|---|---|
| Displacement | 14.0L (854 cu in) |
| Cylinders | 6 in-line |
| Applications | Large excavators, bulldozers |
| Speed Sensor Location | Flywheel housing |
| Parameter | Specification |
|---|---|
| Displacement | 5.8L (354 cu in) |
| Cylinders | 6 in-line |
| Applications | PC120, PC130, PC150 excavators |
| Speed Sensor Location | Flywheel housing |
| Parameter | Specification |
|---|---|
| Displacement | 6.7L (409 cu in) |
| Cylinders | 6 in-line |
| Applications | PC130, PC150 excavators |
| Speed Sensor Location | Flywheel housing |
| Model | Engine | Application |
|---|---|---|
| PC120-5 | S4D102E / SA6D95L | Engine speed sensor |
| PC120-6 | S4D102E / SA6D95L | Engine speed sensor |
| PC120-7 | SAA6D108E | Engine speed sensor |
| PC120-8 | SAA6D108E | Engine speed sensor |
| Model | Engine | Application |
|---|---|---|
| PC130-5 | S4D102E / SA6D95L | Engine speed sensor |
| PC130-6 | S4D102E / SA6D95L | Engine speed sensor |
| PC130-7 | SAA6D108E | Engine speed sensor |
| PC130-8 | SAA6D108E | Engine speed sensor |
| Model | Engine | Application |
|---|---|---|
| PC150-5 | S6D102E / SA6D95L | Engine speed sensor |
| PC150-6 | S6D102E / SA6D95L | Engine speed sensor |
| PC150-7 | SAA6D108E | Engine speed sensor |
| PC150-8 | SAA6D108E | Engine speed sensor |
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.
Bullet Points
✔ OEM Replace Number: 7861-93-2330, also replaces 7861-93-2331, 600-815-8150 – direct fit for Komatsu engines
✔ Precision Magnetic Pickup: Accurate engine RPM signal for optimal performance and fuel efficiency
✔ Wide Compatibility: Works with S4D102E, S6D102E, SA6D140 engines – used in PC120-5, PC200-6, PC200-7, PC300-5, PC400-6, D65EX-12 and more
✔ Heavy Duty Construction: Heat, oil and vibration resistant for harsh construction environments
✔ Plug & Play Installation: Direct replacement, no modification required
✔ Cost Effective: OEM quality at competitive price
Frequently Asked Questions
Q: What Komatsu engines use the 7861-93-2330 sensor?
A: The COGENG 7861-93-2330 sensor is a direct OEM replacement designed for Komatsu S4D102E, S6D102E, and SA6D140 diesel engine series. This sensor is typically used for monitoring engine parameters such as temperature, pressure, or speed, providing critical data to the engine control system. Always verify this part number against your engine's parts manual or the original sensor's identification markings to confirm exact compatibility before ordering.
Q: What are the symptoms of a failing sensor on a Komatsu engine?
A: Common symptoms include inaccurate or erratic readings on the monitor panel, active diagnostic trouble codes related to the sensor circuit, engine performance issues, the engine entering a derate or limp mode, hard starting, poor fuel economy, or failure of automatic engine protection functions to activate. A faulty sensor can significantly impact engine reliability and should be replaced promptly.
Q: How does this sensor affect engine operation?
A: This sensor continuously monitors critical engine parameters and transmits real-time data to the engine ECU. The information is used to control fuel injection, engine timing, and protection functions. Accurate sensor data is essential for proper engine performance, fuel efficiency, and preventing potential engine damage.
Q: Is this sensor a direct plug-and-play replacement?
A: Yes, the COGENG 7861-93-2330 sensor is manufactured to exact OEM specifications for thread size, electrical connector type, signal output characteristics, and mounting dimensions. It is a direct plug-and-play replacement requiring no wiring modifications or adapters when installed on compatible Komatsu S4D102E, S6D102E, or SA6D140 engines.
Q: What is the warranty coverage for this sensor?
A: COGENG provides a standard 12-month warranty against manufacturing defects from the date of installation. Proof of purchase and installation by a qualified technician are required. Warranty does not cover failure caused by improper installation, wiring damage, physical impact, overtightening, thread damage, or use on incompatible engines.
Q: What should I check before installing the new sensor?
A: Before installation, inspect the sensor mounting port for debris or damage, check the electrical connector for corrosion, and ensure proper torque is applied as specified by the service manual to prevent thread damage. Verify the wiring harness is in good condition to prevent signal interference.
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