Temperature Sensor 8N-3844 is suitable for CAT 3116 and 3406 diesel engines.
The 8N-3844 engine temperature sensor is mainly used to monitor coolant or system temperature changes during engine operation. This sensor is installed in a designated location on the engine via a standard thread, stably transmitting the temperature signal to the instrument panel or control module, providing operators with real-time temperature feedback to help detect abnormal operating conditions promptly and reduce the risk of engine overheating.
| Part Number |
8N-3844 |
| Replacement Part Numbers |
CA8N3844, 8N-3844, 8N3844 |
| Type |
Temperature Signal Sensor |
| Rated Voltage |
24V |
| Material and Structure |
Brass threaded body + built-in temperature sensing element |
| Installation Method |
Threaded mounting |
Function Description
Real-time acquisition of engine operating temperature and transmission of signals to the instrument panel or control system for monitoring engine operating status and preventing overheating.
Features and Advantages
Original Specification Matching: Designed according to CAT engine standards, ensuring stable and reliable signal output.
High Temperature Resistant Structure: Metal body and heat-resistant sensing element, adaptable to high-temperature engine operating conditions.
Plug and Play: Standard threaded interface design for easy and quick replacement and installation.
Strong Compatibility: Widely applicable to various Cat diesel engines.






Frequently Asked Questions
Q1: What is your main products?
A1: We are specialized in the excavator engine spare parts, for example Main cylinder block, cylinder head, crankshaft, Engine assembly, piston, cylinder liner, piston ring, camshaft, connecting rod, oil pump, water pump, valve series products, movement, etc. almost all parts of the entire engine.
Q2: Do you test all products before shipping?
A2: Yes, we conduct 100% testing before shipping.
Q3: Which engine models is this Temperature Signal Sensor compatible with?
A3: This product is designed for specific diesel engine models. If you can provide the engine model or original part number, we can confirm compatibility before shipping to avoid incompatibility issues.
Q4: Can you provide cross-reference information for OEM part numbers?
A4: Yes, we support original part interchange. Please provide the original part number, and we will verify the replacement part accordingly.
Q5: What should I do if there is a problem with the product?
A5: Our products undergo professional testing and are of very stable quality. If you do find any problems, please contact us. We have a professional after-sales team to help you solve the problem.
Why Choose Us?
• Over 20 years of experience specializing in construction machinery, engines, and parts – with stable experience supplying mainstream brands and models.
• Extensive experience in model matching enables us to provide customers with accurate parts selection, reducing procurement risks.
• A long-term, stable, and reliable supply system ensures reliable product sourcing and meets continuous procurement needs.
• For product information or quotations, our professional team will provide you with detailed answers immediately upon receiving your request.