Thermostat Switch Sensor 3408643 3915945 for Engine 4B3.9 6B5.9 B4.5 B6.7S 4.5

Product Overview

The Thermostat Switch Sensor 3408643 3915945 is a critical component for engine temperature monitoring in Cummins diesel engines. It ensures precise temperature control for optimal engine performance and efficiency. This sensor is designed for use in heavy-duty applications requiring reliable coolant temperature sensing.

Key Features & Performance

• Direct replacement for OEM part numbers 3408643 and 3915945
• Compatible with Cummins 4B3.9, 6B5.9, B4.5, B6.7S and 4.5 engine models
• High-quality construction for accurate temperature sensing and durability
• Easy plug-and-play installation with factory connectors
• Rigorous testing ensures reliable performance under extreme conditions

Fitment & Compatibility

• Cummins 4B3.9 engine
• Cummins 6B5.9 engine
• Cummins B4.5 engine
• Cummins B6.7S engine
• Cummins 4.5 engine

Technical Specifications

• Part Number(s): 3408643, 3915945

Frequently Asked Questions

Q: What is the function of this thermostat switch sensor? A: It monitors engine coolant temperature and sends a signal to the engine control unit to regulate cooling fan operation and maintain optimal operating temperature.

Q: Is this sensor compatible with all Cummins engines? A: It is specifically designed for Cummins 4B3.9, 6B5.9, B4.5, B6.7S and 4.5 models; verify your engine model before purchase.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.