Woodward D.C. fuel shutoff solenoid, specifically model 1503ES-12S5SUC12S (or SA-4569-T), designed for diesel engines.Part Type: 12-volt DC fuel shutdown / stop solenoidBrand: Woodward (common in Kubota, Yanmar, and Thermo King diesel applications)Function: Controls fuel flow to safely shut down or stop small-to-medium diesel engines