1988-1989 Ford F350 7.5L V8. 1986-1989 Ford F350 5.8L V8. 1987-1989 Ford F350 4.9L 6 Cyl. 1990-1992 Ford F350 7.5L V8. Notes: Direct Fit Oxygen Sensor -- B1S1. Upgraded to the latest OE technologies, NTK Oxygen Sensors are designed to reduce OE failures, enhance durability and performance.
