Coolant Temperature Sensors - Engine Room Consumables and Spares
Coolant temperature sensors monitor engine-coolant temperature in marine propulsion and auxiliary engines. The signal is used by the engine control system, alarm panel, monitoring system, and shutdown protection to detect overheating and support safe operation.
ProShipWorks provides end-to-end support to source and supply Coolant Temperature Sensors for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.
Last updated:
Product Information
| Product Name | Coolant Temperature Sensors |
|---|---|
| Product Category | Engine Room Consumables and Spares |
| Product Reference | 1389 |
| Brands / Manufacturers | Caterpillar, Cummins, Volvo Penta, Yanmar, MTU |
| Unit of Measure | Piece |
Key Features
| Key Feature |
|---|
| 1. Temperature-sensitive electrical element, commonly NTC thermistor or resistance sender |
| 2. Brass or stainless-steel threaded housing |
| 3. Available with single-wire, two-wire, or multi-pin connectors |
| 4. Designed for continuous exposure to engine coolant and vibration |
| 5. Provides alarm, indication, control, or engine-protection signals |
Applications of Coolant Temperature Sensors
| Application |
|---|
| 1. Main propulsion diesel engines |
| 2. Auxiliary generator engines |
| 3. Engine monitoring and alarm systems |
Models & Manufacturers
| Model | Manufacturer |
|---|---|
| 199-0389 Coolant Temperature Sensor | Caterpillar |
| 4921322 Coolant Temperature Sensor | Cummins |
| 3849415 Temperature Sender | Volvo Penta |
| 128270-49300 Temperature Sensor | Yanmar |
Technical Specifications
| Model | Specification | Value | Unit |
|---|---|---|---|
| Typical marine coolant temperature sensor | Sensing technology | NTC thermistor or resistance sender | — |
| Typical marine coolant temperature sensor | Typical measuring range | -40 to 150 | °C |
| Typical marine coolant temperature sensor | Typical supply voltage | 5 or 12/24 | V DC |
| Typical marine coolant temperature sensor | Typical process connection | Metric or NPT threaded fitting | — |
| Typical marine coolant temperature sensor | Typical protection rating | IP67 or higher for connectorized versions | — |
Standards, Certifications & Class Approval
Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.
| Applicable Standards & Certification | Requirements depend on the engine and vessel approval. Marine installations may reference ISO 15550 for engine power and test declarations, ISO 8846 for protection against ignition of surrounding flammable gases where applicable, and OEM electrical and environmental specifications. Verify the exact sensor part number and approval documentation. |
|---|---|
| Class Approval | Sensors supplied as original engine components may be covered by the engine or machinery type approval of DNV, ABS, Lloyd's Register, Bureau Veritas, or ClassNK. Standalone approval is not universal; confirm acceptance with the vessel's classification society and the engine manufacturer. |
Installation, Maintenance & Safety Information
| Installation Notes | Isolate the engine, allow coolant to cool, and drain or close the appropriate coolant circuit before removal. Install using the specified thread sealant or sealing washer, observing OEM torque and wiring polarity. Refill and vent the cooling system, then verify the temperature reading and alarm function. |
|---|---|
| Maintenance Tips | Inspect the connector, wiring, terminals, and sensor body for corrosion, coolant leakage, vibration damage, or chafing. Compare readings with a calibrated temperature measurement during scheduled maintenance. Replace sensors that show unstable, implausible, or out-of-range readings. |
| Safety Notes | Do not remove the sensor from a hot or pressurized cooling system. Wear eye and hand protection when handling coolant. Use the exact OEM replacement specification because an incorrect resistance curve or thread can cause false readings, overheating alarms, or engine protection failure. |
Request a Quote for Coolant Temperature Sensors
Contact ProShipWorks for marine or industrial product sourcing, quotations and delivery.
- Vessel name and IMO number
- ETA / vessel schedule
- Berth or vessel location
- Required quantity
- Preferred delivery window
- Shipping agent contact details
Other Engine Room Consumables and Spares Products
Explore our range of marine and industrial Engine Room Consumables and Spares products available for sourcing and supply through ProShipWorks.
Why ProShipWorks?
Trusted & Professional Service
Experienced maritime professionals focused on quality, safety and dependable service execution.
24/7 Rapid Response
Fast response for planned and urgent vessel requirements, whenever support is needed.
Unbeatable Prices
Cost-effective marine services with competitive and transparent pricing for vessel requirements.
Port & Anchorage Coverage
Reliable marine service support across ports, anchorages and offshore locations.