Truck owners and mechanics, if you're dealing with coolant level issues on your Cummins engine, this KEYOPO sensor is exactly what you need to get things working properly again. This 3-wire coolant level sensor switch replaces part number 4383933 and is specifically designed for Cummins K19 and K38 truck engines. The construction feels solid and durable - this isn't some cheap knockoff that'll fail in a few months. Installation is straightforward if you're familiar with engine components, and it fits perfectly like the original equipment part. The sensor plays a crucial role in monitoring your coolant levels and preventing engine overheating, which can lead to serious and expensive damage if ignored. The 6-month warranty gives you peace of mind that you're getting a quality part that's built to last. The responsive design ensures accurate readings so you get reliable warnings if your coolant drops to dangerous levels. Whether you're a professional mechanic working on fleet vehicles or a truck owner doing your own maintenance, this sensor delivers OEM-compatible performance without the OEM price tag. It's one of those replacement parts that might seem small but plays a big role in keeping your engine running smoothly and preventing costly repairs down the road. Always double-check that this part number matches your specific engine model before ordering to ensure proper fit and function.
Free 30-day returns 
Free 30-day returns
