EFI UTV 1000 All-Terrain Vehicle Oxygen Sensor 39160-116-0000 Precise Control

EFI UTV 1000 all-terrain vehicle oxygen sensor directly replaces original OEM 28130529 and also compatible with 25325632, 25325359, 25324175; no wiring changes required. Core function is to accurately monitor exhaust oxygen content and send signal to ECU to adjust fuel injection for engine efficiency. Fits Polaris RZR 1000 and general UTV 1000 series; after installation, it resolves rough idle, acceleration hesitation, and high fuel consumption. If MIL illuminates, exhaust emits black smoke, or power drops, sensor aging is likely; replace for peace of mind.