These parts have been in units installed prior.  All units have been tested/repaired of any mechanical issues in our facility. 

Onan 2500i Generator Engine Harness (A059W504) – OEM replacement harness engineered for reliable electrical connectivity in portable power applications. This genuine Onan component ensures proper signal and power distribution to critical engine systems, maintaining optimal generator performance and longevity. Direct fit for compatible Onan 2500i models. Essential for troubleshooting electrical issues or restoring generator functionality after repairs. Stock this harness for inventory completeness and customer satisfaction on generator service calls.