It features a 1 5/8" primary tube and a 3.0" outlet, providing enhanced performance for your vehicle. 1998-1999 Nissan Sentra SE-R Mass Flow Sensor Adapter 3" OD 8 Mounting Holes. Mass Flow Sensor Adapter for Nissan 6cyl 3.0L 3.8" OD with 4 Mounting Holes.
