The Cummins 4500 Parallel Kit lets you double the power of your generators by running your Onan P4500i Inverter Generators in parallel. Perfect for RV and camper applications. This Parallel Kit is recommended for use with two Cummins Onan P4500i Inverter Generators or with one P4500i and one P2500i Inverter Generators. Double the power of your Cummins inverter generators with this 50A (50 amp) inverter generator parallel cord. Perfect for RV and camper applications. | Cummins 4500 Generator Parallel Kit