New Cummins 60 Degree Lower Water Neck Thermostat Housing Part #3903103
This listing is for a NEW MADE IN USA Cummins Lower Water Neck Thermostat Housing Part No: 3903103 for Cummins 4B, 4BT &4BTA plus 6B, 6BT and 6BTA engines. They are Genuine Cummins part number 3903103 and are NOT aftermarket parts. These are removed from NEW engines so they may have some scratches, scrapes and dirt but no chips, breaks or stripped threads. They are fully functional--just like new. We use these on our Cummins repowers in Oliver and White tractors. We have both Cast Iron and Aluminum versions in stock. This does fit a 2 1/4" ID hose.