Fuel/Water Separator Spin-on with Drain, Sensor Port and Reusable Sensor Notes: CAUTION: Furnished O-Ring must be installed on post for seal. For use with Deutz square sensor. NOT Interchangeable with BF1272-SPS. Contains: Sensor Port Thread: M14 x 2.0 Standpipe Fits: Cummins Engines Replaces: Cummins 3406889; Donaldson P551003; Fleetguard FS1003 Thread: 1-14 O.D.: 3 11/16 (93.7) Length: 10 1/32 (254.8) I. Gskt.: G381-A