Fuel Shut Off Solenoid

The 4942879 stop solenoid valve is a pull/push 3-way fuel shut-off device for diesel injection pumps, available in 12V DC and 24V DC to match both light commercial and heavy industrial engine electrical systems — with an optimized coil wound in high-temperature wire and encapsulated against moisture, vibration, and diesel fuel exposure, and a spring-return mechanism that cuts fuel automatically when power is removed for inherently fail-safe emergency engine stop sequences. POPULACE machines the stop solenoid valve plunger and return spring to precise tolerances for consistent actuation force at both pull-in and hold-in stages, selects seal compounds for compatibility with diesel fuel and biodiesel blends to resist swelling and hardening over time, and validates each unit through extended cycle testing — with pre-shipment production testing covering actuation force, coil resistance, and seal integrity to confirm OEM-dimensional direct-fit performance before dispatch. The 4942879 stop solenoid valve fits diesel generator sets in standby and prime power service, agricultural irrigation pumps and tractor engines, construction and mining equipment on and compatible injection pump platforms, marine diesel engines in commercial vessels and recreational craft, and telecom and data center backup generators where the solenoid remains energized for extended continuous-duty run periods. Engine parts distributors, OEM assemblers, and diesel service depots in Africa, the Middle East, Southeast Asia, and South America specify the 4942879 stop solenoid valve for its dual 12V/24V coverage under one part number, consistent production-tested quality that reduces field return risk, and drop-in fitment that requires no additional machining or adapters on compatible and injection pump platforms.

CE and ISO certified, the U85206452 solenoid uses a pull-to-run, spring-return mechanism with precision coil winding that maintains stable magnetic pull from cold-start through sustained high-temperature operation on Perkins 404D-22G diesel engines. OEM-dimensioned at 0.75 KG with close-tolerance plunger-bore clearance, it installs as a direct replacement on compatible fuel injection pump assemblies without modification, and cross-references U85206520, U85206451, 185206452, 185206450, and 185206420. Serving generator sets, agricultural machinery, construction equipment, marine auxiliary engines, and industrial power units, it meets diesel fuel shutoff requirements across mixed-fleet service organizations and B2B parts distributors. Backed by a 1-year warranty, it delivers positive fuel shutoff and clean spring return on every shutdown cycle.