This crankshaft pulley is designed to fit Cummins engines with precision and accuracy. It is a genuine OE/OEM part number and is manufactured to the highest standards to ensure durability and reliability. This pulley is compatible with various models and part numbers, including 5365943, 5255204, and 3954949. It is perfect for those looking for a replacement or upgraded pulley for their Cummins engine. This pulley is made to fit perfectly and will provide optimal performance and reliability. It is a must-have for anyone who wants to keep their engine running smoothly and efficiently.