| Parameter | Details |
|---|---|
| Product Name | Engine Coolant Temperature (Water Temp) Sensor |
| Part Number | S8346-01510 (also S834601510) |
| Compatible Brands | Kobelco |
| Compatible Excavator Models | SK200-8, SK250-8, SK260, SK330-8, SK350-8 |
| Compatible Engine | Hino / Mitsubishi / Kobelco engines (SK Series) |
| Sensor Type | NTC Thermistor (Coolant Temperature) |
| Material | Brass / Stainless Steel + Rubber Seal |
| Packing | PP bag inside, carton box outside |
| Payment Terms | Western Union, L/C, T/T, MoneyGram, D/A, D/P |
| MOQ | Acceptable trial order (1 piece accepted) |
| Shipping Mode | Air/Sea/Express (FedEx, UPS, DHL, TNT, etc.) |
| Place of Origin | Guangdong, China |
| Brand Name | COGENG |
| Certification | ISO9001 |
| Stock Status | ✅ In Stock |
| Warranty | 6 Months |
| Supply Capacity | 500 PCS |
The COGENG S8346-01510 (S834601510) Water Temperature Sensor is a high-precision, direct OEM replacement sensor specifically designed for a wide range of Kobelco SK-Series excavators, including the SK200-8, SK250-8, SK260, SK330-8, and SK350-8 models. These popular medium-to-large excavators are widely used in construction, mining, quarrying, demolition, and infrastructure projects worldwide.
This sensor monitors engine coolant temperature—one of the most critical parameters for engine performance, fuel efficiency, and longevity. The sensor uses a Negative Temperature Coefficient (NTC) thermistor—as coolant temperature increases, electrical resistance decreases. The ECU (Engine Control Unit) sends a 5V reference voltage through the sensor and measures the return voltage to calculate precise coolant temperature.
Why Coolant Temperature Monitoring is Critical:
| Function | How Temperature Data is Used |
|---|---|
| Fuel Injection Timing | Adjusts timing based on engine temperature for optimal combustion |
| Cold Start Assistance | Enables glow plugs / intake heaters in cold weather |
| Cooling Fan Control | Engages the hydraulic or electric fan at high temperatures |
| Warning Systems | Triggers alarms and derates the engine if overheating occurs |
| Emissions Control | Optimizes combustion for reduced emissions |
| Dashboard Gauge / Monitor | Displays accurate temperature to the operator |
| Engine Protection | Shuts down engine if critical temperature is exceeded |
Manufactured under ISO9001 certified processes, the COGENG S8346-01510 features a brass/stainless steel housing, premium rubber O-ring, and a precision thermistor element to ensure accurate readings across the full temperature range (-40°C to +150°C).
Why Choose COGENG S8346-01510?
Wide Model Compatibility: Fits multiple Kobelco SK-Series excavators.
Direct OEM Replacement: Plug-and-play for Kobelco S8346-01510.
High Accuracy: Precisely calibrated to Kobelco ECU specifications.
Durable Construction: Brass/stainless steel housing withstands vibration and corrosion.
Leak-Proof: Premium O-ring pre-installed.
In Stock: Ready for immediate shipment with fast shipping.
| Component | Quantity | Description |
|---|---|---|
| Water Temperature Sensor | 1 | Complete sensor assembly with pre-attached connector |
| Rubber O-ring / Sealing Ring | 1 | Pre-installed on threaded base |
| Protective Plastic Cap | 1 | For shipping protection only |
| Installation Quick Guide | 1 | Basic instructions |
Note: No additional hardware or sealant is required for installation.
This sensor is specifically designed for the following Kobelco SK-Series excavators:
| Model | Engine | Typical Year Range | Application |
|---|---|---|---|
| Kobelco SK200-8 | Hino / Mitsubishi | 2008–2015 | Medium excavator |
| Kobelco SK250-8 | Hino / Mitsubishi | 2008–2015 | Medium-large excavator |
| Kobelco SK260 | Hino / Mitsubishi | 2010–2018 | Medium-large excavator |
| Kobelco SK330-8 | Hino / Mitsubishi | 2008–2015 | Large excavator |
| Kobelco SK350-8 | Hino / Mitsubishi | 2008–2015 | Large excavator |
Additional compatible models (verify before purchase):
| Model | Compatibility |
|---|---|
| Kobelco SK200-8 LC | ✅ Compatible (long undercarriage) |
| Kobelco SK250-8 LC | ✅ Compatible (long undercarriage) |
| Kobelco SK260 LC | ✅ Compatible (long undercarriage) |
| Kobelco SK330-8 LC | ✅ Compatible (long undercarriage) |
| Kobelco SK350-8 LC | ✅ Compatible (long undercarriage) |
| Kobelco SK200-6E | ⚠️ Older model – verify connector |
| Kobelco SK250-6E | ⚠️ Older model – verify connector |
| Kobelco SK380-8 | ✅ Likely compatible |
| Kobelco SK480-8 | ⚠️ Verify – larger engine may differ |
⚠️ Important: The Dash 8 series (SK200-8, SK250-8, SK330-8, SK350-8) and the SK260 use this sensor. Older Dash 6 series may use a different connector.
| Model | Engine | Displacement | Configuration |
|---|---|---|---|
| SK200-8 | Hino / Mitsubishi | 5.8L – 6.0L | 6-cylinder turbo diesel |
| SK250-8 | Hino / Mitsubishi | 6.9L – 7.4L | 6-cylinder turbo diesel |
| SK260 | Hino / Mitsubishi | 6.9L – 7.4L | 6-cylinder turbo diesel |
| SK330-8 | Hino / Mitsubishi | 8.0L – 8.9L | 6-cylinder turbo diesel |
| SK350-8 | Hino / Mitsubishi | 8.0L – 8.9L | 6-cylinder turbo diesel |
Normal Coolant Temperature Ranges:
| Condition | Temperature | Action |
|---|---|---|
| Cold Start | 0-30°C (32-86°F) | Glow plugs active |
| Warmup | 30-70°C (86-158°F) | Normal operation |
| Normal Operating | 75-95°C (167-203°F) | Optimal fuel economy |
| High Temperature Warning | 100-105°C (212-221°F) | Check cooling system |
| Overheat / Derate | >105°C (>221°F) | Engine derates |
| Brand | Part Number | Notes |
|---|---|---|
| COGENG | S8346-01510 (also S834601510) | Direct replacement |
| Kobelco (OEM) | S8346-01510 | Original equipment |
| Kobelco (alternate) | S834601510 | Same (no dash) |
| Hino (OEM) | S8346-01510 | Engine manufacturer part |
| Aftermarket | 434-2000 | Similar (verify) |
Note: Always match your original sensor part number. S8346-01510 is the Kobelco OEM number for this sensor.
✅ Direct OEM replacement for:
Kobelco part number: S8346-01510 / S834601510
✅ Designed For:
Kobelco SK200-8 excavator
Kobelco SK250-8 excavator
Kobelco SK260 excavator
Kobelco SK330-8 excavator
Kobelco SK350-8 excavator
✅ Engine Compatibility:
Hino diesel engines (SK Series)
Mitsubishi diesel engines (SK Series)
Kobelco diesel engines
✅ Electrical Specifications:
Connector: 2-pin (Deutsch / AMP – matches Kobelco)
Operating Voltage: 5V DC (reference from ECU)
Output: Variable resistance (NTC thermistor)
✅ Mechanical Specifications:
Thread Size: 1/8-27 NPT or M10x1
Hex Size: 17mm, 19mm, or 22mm
Sealing: Rubber O-ring (pre-installed)
⚠️ Before purchasing, please verify:
| Check Item | Why It's Important |
|---|---|
| Machine Model | SK200-8, SK250-8, SK260, SK330-8, or SK350-8 |
| Machine Serial Number | Helps confirm specific configuration |
| Old Part Number | S8346-01510 or S834601510 |
| Connector Type | 2-pin (photo recommended) |
| Thread Size | 1/8-27 NPT or M10x1 |
❌ NOT Compatible With:
Kobelco SK200-6, SK250-6 (older – verify connector)
Kobelco SK200-9, SK250-9 (newer – verify connector)
Kobelco SK300 (verify)
Non-Kobelco equipment (different ECU calibration)
Q1: What are the symptoms of a failing water temperature sensor on a Kobelco SK excavator?
A: Common symptoms include:
Check Engine Light (CEL) with error codes.
Temperature gauge on monitor reads 0°C or pegged at maximum.
Engine derates (reduced power) due to incorrect ECU readings.
Hard starting in cold weather (no cold-start assist).
Cooling fan runs constantly or never runs.
Poor fuel economy.
Engine overheating without warning.
Q2: Is this a genuine Kobelco OEM part?
A: No. COGENG is an aftermarket manufacturer (ISO9001) . Our parts are built to OEM specifications, offering the same fit and function at a reduced cost.
Q3: Will this sensor fit my Kobelco SK200-8?
A: Yes – the SK200-8 is one of the primary compatible models.
Q4: Will this sensor fit my Kobelco SK250-8?
A: Yes – the SK250-8 is one of the primary compatible models.
Q5: Will this sensor fit my Kobelco SK260?
A: Yes – the SK260 is one of the primary compatible models.
Q6: Will this sensor fit my Kobelco SK330-8?
A: Yes – the SK330-8 is one of the primary compatible models.
Q7: Will this sensor fit my Kobelco SK350-8?
A: Yes – the SK350-8 is one of the primary compatible models.
Q8: What is the difference between S8346-01510 and S834601510?
A: No difference. They are the same part number – the dash is simply a formatting difference.
Q9: What is the correct torque for this sensor?
A: 15–25 Nm (11–18 ft-lbs) . Do not overtighten – the brass housing can crack.
Q10: Can I install this sensor myself?
A: Yes, with basic mechanical skills (15–20 minutes). If unsure, professional installation is recommended.
Q11: Is this sensor in stock for immediate shipping?
A: Yes – COGENG maintains stock of 500+ units. Orders ship within 24–48 hours.
Q12: How long does shipping take?
A:
Express (DHL/FedEx/UPS/TNT): 3–7 business days worldwide.
Air freight: 7–12 days.
Sea freight: 20–40 days.
Q13: How do I place a trial order?
A: Contact your COGENG distributor. MOQ is 1 piece.
Q14: What is the warranty?
A: COGENG provides a 6-month warranty against manufacturing defects.
| Code | Description | Likely Issue |
|---|---|---|
| 110-03 | Engine Coolant Temp Sensor – Voltage High | Sensor open circuit / disconnected |
| 110-04 | Engine Coolant Temp Sensor – Voltage Low | Sensor shorted / internal failure |
| 110-08 | Engine Coolant Temp Sensor – Abnormal Frequency | Wiring interference / poor connection |
| PID 110 | Coolant Temperature – Out of Range | Sensor reading unrealistic |
If codes persist after sensor replacement, check the wiring harness for damage.
| Parameter | Value |
|---|---|
| Sensor Type | NTC Thermistor |
| Temperature Range | -40°C to +150°C |
| Resistance @ 25°C (77°F) | ~10,000 Ω |
| Resistance @ 80°C (176°F) | ~2,000 Ω |
| Resistance @ 100°C (212°F) | ~1,000 Ω |
| Connector Type | 2-pin Deutsch / AMP |
| Thread Size | 1/8-27 NPT or M10x1 |
| Hex Size | 17mm / 19mm / 22mm |
| Housing Material | Brass / Stainless Steel |
| Seal Material | Nitrile rubber (NBR) |
| Operating Voltage | 5V DC (from ECU) |
| Response Time | <5 seconds |
| ISO Standard | ISO9001:2015 |
| Country of Origin | China (Guangdong) |
| HS Code | 90259000 |
| Weight | Approx. 40g |
| Condition | Temperature | Monitor Reading | Action |
|---|---|---|---|
| Cold Start | 0-30°C (32-86°F) | Cold | Glow plugs active |
| Warmup | 30-70°C (86-158°F) | Rising | Normal |
| Normal Operating | 75-95°C (167-203°F) | Mid-range | Normal |
| High Temp Warning | 100-105°C (212-221°F) | Red zone | Check cooling system |
| Overheat / Derate | >105°C (>221°F) | Red zone | Engine derates |
To ensure we ship the correct sensor, please provide:
Machine Model: SK200-8 / SK250-8 / SK260 / SK330-8 / SK350-8
Machine Serial Number: (helps confirm configuration)
Old Part Number: S8346-01510 or S834601510
Photo of Old Sensor: (recommended – helps identify connector and thread type)
✅ In Stock – Ready to Ship.
✅ MOQ 1 piece accepted for trial orders.
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