| Parameter | Details |
|---|---|
| Product Name | Engine Coolant Temperature (Water Temp) Sensor |
| Part Number | 716-30126 (also 716/30126) |
| Compatible Brands | JCB |
| Compatible Machine Models | 3CX, 4CX, 2CX, 506-36, 540-140, 540-170 |
| Sensor Type | NTC Thermistor (Coolant Temperature) / Temperature Sender |
| 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 716-30126 Water Temperature Sensor is a high-precision, direct OEM replacement sensor specifically designed for a wide range of JCB backhoe loaders and telehandlers, including the 3CX, 4CX, 2CX, 506-36, 540-140, and 540-170 models. These popular machines are widely used in construction, agriculture, landscaping, and material handling 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) or dashboard gauge sends a reference voltage through the sensor and measures the return signal 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 fan at high temperatures |
| Warning Systems | Triggers alarms if overheating occurs |
| Emissions Control | Optimizes combustion for reduced emissions |
| Dashboard Gauge | Displays accurate temperature to the operator |
| Engine Protection | Alerts operator to potential overheating |
Manufactured under ISO9001 certified processes, the COGENG 716-30126 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 716-30126?
Wide Model Compatibility: Fits multiple JCB backhoe loaders and telehandlers.
Direct OEM Replacement: Plug-and-play for JCB 716-30126.
High Accuracy: Precisely calibrated to JCB gauge/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 terminal/connector |
| Rubber O-ring / Sealing Washer | 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.
Internal Structure of the COGENG 716-30126 Water Temperature Sensor:
[ELECTRICAL TERMINAL] ← Single spade or 2-pin connector (matches JCB)NTC Thermistor Behavior:
Temperature ↑ → Resistance ↓ → Gauge rises
Temperature ↓ → Resistance ↑ → Gauge falls
This sensor is specifically designed for the following JCB machines:
| Model | Machine Type | Engine | Typical Year Range |
|---|---|---|---|
| JCB 2CX | Backhoe Loader | Perkins / JCB | 1990–2005 |
| JCB 3CX | Backhoe Loader | Perkins / JCB | 1980–Present |
| JCB 4CX | Backhoe Loader | Perkins / JCB | 1985–Present |
| JCB 506-36 | Telehandler | Perkins / JCB | 2000–2010 |
| JCB 540-140 | Telehandler | Perkins / JCB | 2000–2010 |
| JCB 540-170 | Telehandler | Perkins / JCB | 2000–2010 |
Additional compatible models (verify before purchase):
| Model | Compatibility |
|---|---|
| JCB 214 | ✅ Likely compatible |
| JCB 215 | ✅ Likely compatible |
| JCB 217 | ✅ Likely compatible |
| JCB 520-50 | ⚠️ Similar – verify |
| JCB 530-70 | ⚠️ Similar – verify |
| JCB 550-140 | ⚠️ Similar – verify |
| JCB 3C (older) | ⚠️ Check connector type |
⚠️ Important: The 716-30126 (also 716/30126) is a widely used temperature sensor across JCB's backhoe loader and telehandler ranges. It is used with Perkins and JCB Dieselmax engines.
| Model | Engine | Displacement | Configuration |
|---|---|---|---|
| 2CX / 3CX / 4CX (older) | Perkins 1004-4 | 4.0L | 4-cylinder diesel |
| 2CX / 3CX / 4CX (newer) | JCB Dieselmax | 4.4L | 4-cylinder diesel |
| 506-36 / 540-140 / 540-170 | Perkins / JCB | 4.0L – 4.4L | 4-cylinder diesel |
Normal Coolant Temperature Ranges:
| Condition | Temperature | Gauge 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 Temperature Warning | 100-105°C (212-221°F) | Red zone | Check cooling system |
| Overheat | >105°C (>221°F) | Maximum | Shut down engine |
| Brand | Part Number | Notes |
|---|---|---|
| COGENG | 716-30126 (also 716/30126) | Direct replacement |
| JCB (OEM) | 716-30126 | Original equipment |
| JCB (alternate) | 716/30126 | Same part (slash format) |
| Perkins (OEM) | 701-8105 | Similar (verify) |
| Aftermarket | 701-8105 | Common cross-reference |
Note: The 716-30126 is the JCB OEM part number. The slash format (716/30126) is also used in JCB parts catalogs.
✅ Direct OEM replacement for:
JCB part number: 716-30126 / 716/30126
✅ Designed For:
JCB 2CX backhoe loader
JCB 3CX backhoe loader
JCB 4CX backhoe loader
JCB 506-36 telehandler
JCB 540-140 telehandler
JCB 540-170 telehandler
✅ Engine Compatibility:
Perkins 1004-4 (4.0L, 4-cylinder)
JCB Dieselmax 444 (4.4L, 4-cylinder)
Other Perkins 1000 series engines
✅ Electrical Specifications:
Connector: Single spade terminal or 2-pin (verify)
Output: Variable resistance (to gauge or ECU)
Operating Voltage: 12V (gauge circuit) or 5V (ECU)
✅ Mechanical Specifications:
Thread Size: 1/8-27 NPT or 1/8 BSP
Hex Size: 17mm, 19mm, or 22mm
Sealing: Rubber O-ring or copper washer
⚠️ Before purchasing, please verify:
| Check Item | Why It's Important |
|---|---|
| Machine Model | 2CX, 3CX, 4CX, 506-36, 540-140, or 540-170 |
| Engine Type | Perkins or JCB Dieselmax |
| Old Part Number | 716-30126 or 716/30126 |
| Connector Type | Single spade or 2-pin (photo recommended) |
| Thread Size | NPT or BSP |
❌ NOT Compatible With:
JCB 3C (very old model) – check connector
JCB Fastrac (tractor – different sensor)
JCB 520-50 / 530-70 (verify)
Non-JCB equipment (different gauge calibration)
| Condition | Temperature | Gauge 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 | >105°C (>221°F) | Maximum | Shut down engine |
Q1: What are the symptoms of a failing water temperature sensor on a JCB 3CX/4CX?
A: Common symptoms include:
Temperature gauge reads 0°C or stays at cold (even when engine is hot).
Temperature gauge pegs at maximum (overheating warning).
Engine derates (reduced power) due to incorrect ECU readings (electronic models).
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 JCB 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 JCB 3CX?
A: Yes – the 3CX is one of the primary compatible models.
Q4: Will this sensor fit my JCB 4CX?
A: Yes – the 4CX is one of the primary compatible models.
Q5: Will this sensor fit my JCB 2CX?
A: Yes – the 2CX is one of the primary compatible models.
Q6: Will this sensor fit my JCB 506-36 telehandler?
A: Yes – the 506-36 is one of the primary compatible models.
Q7: Will this sensor fit my JCB 540-140 or 540-170 telehandler?
A: Yes – both 540-140 and 540-170 are compatible models.
Q8: What is the difference between 716-30126 and 716/30126?
A: No difference. They are the same part number – the slash is simply an alternate formatting used in JCB parts catalogs.
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.
To ensure we ship the correct sensor, please provide:
Machine Model: 2CX / 3CX / 4CX / 506-36 / 540-140 / 540-170
Engine Type: Perkins or JCB Dieselmax
Old Part Number: 716-30126 (or 716/30126)
Connector Type: Single spade or 2-pin
Photo of Old Sensor: (recommended – helps identify connector and thread type)
✅ In Stock – Ready to Ship.
✅ MOQ 1 piece accepted for trial orders.
*shipping Details Return Sales*
Sales price:
Please contact COGENG sales customer service for specific prices.
Shipping method:
The specific arrangement will be based on the cargo situation.
Estimated delivery time:
It is based on the shipping time of the logistics company, and the arrival time shown shall prevail.
Contact details are at the bottom.
MerchantReturnPolicy:
The products shipped are not returnable or exchangeable.
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