Replaces OEM Part Numbers: 234-4575, BB5Z9G444A, CM5Z9G444A, CT4Z9G444A, CV6Z9G444A, CV6Z9G444B, OS5596, 250-241023, DY-1179 Function - Oxygen sensor monitors exhaust oxygen levels to help regulate the engine's air-fuel ratio, supporting efficient combustion and emissions control. Material and build - Made from durable materials to withstand engine conditions and deliver reliable performance over time. Installation - Engineered for straightforward installation with compatibility to the listed OEM part numbers. Performance benefits - Provides accurate readings to support engine efficiency, emissions performance, and diagnostic usefulness when the check engine light is on. Applications and use scenarios - Replacement in vehicles using the listed OEM numbers when sensor performance declines, restoring fuel efficiency and smooth operation. - Routine maintenance to prevent emissions-related issues and ensure proper catalyst operation. - Diagnosing and resolving symptoms such as rough idle, high fuel consumption, or sluggish acceleration related to oxygen sensor faults.