MaySpare Fuel Shut Off Solenoid 12V Replacement for Yanmar/Woodward — 25mm Travel, 180°C Coil

This compact 12VDC shut off solenoid is engineered as a direct-fit aftermarket replacement for several OEM part numbers (1503ES-12S5SUC5S, SA-4562, Woodward SA-4562T and Yanmar numbers 119653-77950 / 119285-77950). Built for diesel small-engine applications including Yanmar 3TNE84, 3TNE88, 4TNE84, 3TNV70, 3TNV76 and 4TNV84, it gives a controlled fuel-stop action with a 25mm travel and robust internal spring forces. The assembly uses high-temperature coil materials rated to 180℃ and durable rubber and spring components for longer service life.

How does this solenoid stop fuel flow reliably?

The solenoid uses a 12V electromagnetic coil to pull a plunger that moves 25mm, isolating the fuel path when activated. With a hold-return force of 80 newtons and a return spring of 17 newtons, it creates a decisive engage/disengage action that resists vibration and partial movement.

• 12VDC coil with 180℃-rated insulation for heat resistance
• 25mm controlled travel for full valve closure
• 80 N hold force and 17 N return spring to prevent flutter
• Quality rubber seals and spring steel for wear resistance

Will this fit my engine or replace my existing part number?

This solenoid is manufactured to replace multiple OEM references, matching common dimensions and electrical requirements. It is compatible with several Yanmar engine families and may replace Woodward and other listed part numbers, but verifying the connector/socket and mounting footprint before purchase is advised.

• Replaces: 1503ES-12S5SUC5S, SA-4562, 119653-77950, 119285-77950
• Compatible with Yanmar 3TNE84, 3TNE88, 4TNE84, 3TNV70, 3TNV76, 4TNV84
• 12V electrical requirement—ensure vehicle/equipment supply matches
• Check socket type and mounting holes before installation

What materials and performance specs matter for durability?

The solenoid uses a coil insulated to withstand up to 180℃ and seals made from engineered rubber to resist fuel and heat exposure. A hardened spring and precision plunger minimize wear, while the specified forces and travel length ensure consistent operation throughout service life.

• Coil rated to 180℃ to tolerate engine-room temperatures
• Rubber and spring materials chosen for fuel resistance and longevity
• Plunger and body machined for tight tolerances and minimal leakage
• Designed to resist vibration and repeated duty cycles

How should I check compatibility and install it safely?

Before ordering, compare the existing solenoid’s electrical connector, mounting pattern, and travel with the MaySpare unit. During installation, disconnect battery power, confirm 12V supply, and secure the solenoid with proper torque to avoid leaks or misalignment.

• Verify socket and connector type matches your equipment
• Confirm 12V system and switch wiring are correct
• Disconnect battery before fitting and bleed fuel system after install
• Contact customer service if dimensions or connectors differ

Who is this for: This replacement solenoid suits mechanics, fleet managers, agricultural and construction equipment owners, and DIYers who operate Yanmar-compatible diesel engines and need a dependable 12V fuel shut off unit. It’s aimed at anyone seeking an economical aftermarket replacement that matches common OEM part numbers while offering robust thermal and mechanical specifications. If you are unsure about fitment, measure your original solenoid’s socket, travel and mounting before purchase or contact MaySpare support for guidance.