Fuel Shut-Off Solenoid Valve for Forklift Diesel & LPG Engines

This fuel shut-off solenoid valve is a universal-fit electromagnetic fuel control device designed for forklift diesel and LPG engine fuel systems, as well as transmission hydraulic control applications requiring electrically actuated flow shut-off. The solenoid valve operates as an electrically controlled gate in the fuel supply line: when the ignition key is turned to the ON position, the solenoid coil energizes, retracting the plunger against spring pressure to open the fuel passage and allow fuel flow to the injection pump (diesel) or mixer/carburetor (LPG). When the key is turned OFF, the coil de-energizes, and the return spring forces the plunger forward to positively seal against the fuel passage seat, cutting off fuel flow and stopping the engine — providing a clean, reliable engine shutdown without the dieseling or run-on common in poorly adjusted mechanical fuel shut-off linkages. This solenoid is an essential safety component that ensures the engine cannot continue running after the operator shuts off the ignition.

The solenoid features a robust steel body with a high-pull-force electromagnetic coil wound from Class H (180°C) insulated copper wire, completely encapsulated in epoxy potting compound that protects against moisture, vibration, salt spray, and chemical exposure in the harsh engine compartment environment. The two-stage coil design — pull-in coil for high initial force to retract the plunger, and hold-in coil for lower continuous power consumption — provides reliable actuation with approximately 25-40 watts of continuous power draw at 12V DC. The hardened steel plunger operates within a precision-bored guide sleeve and seals against a hardened seat for bubble-tight fuel shut-off when de-energized, preventing fuel seepage that can cause hard starting, fuel dilution of engine oil, and unsafe fuel accumulation. Standard coil voltages of 12V DC and 24V DC are available to match different forklift electrical systems. The electrical connector uses a weather-resistant 2-pin Deutsch-style plug with silicone rubber seals that prevent moisture ingress and terminal corrosion.

Compatible with a broad range of forklift diesel and LPG engine platforms including XinChai 490/498, Isuzu C240/4JG2/4HF1, Yanmar 4TNE, Kubota V2203/V2403, Nissan H20/H25, Mitsubishi S4S/S6S, and other industrial engine families. Also suitable for powershift transmission hydraulic control applications requiring electrically actuated oil flow shut-off. Verify the coil voltage (12V or 24V DC), port thread size, and normally-open vs. normally-closed configuration for your specific application before ordering. Installation is straightforward: remove the old solenoid, clean the mounting surface, install a new sealing washer or O-ring, thread the solenoid into the port, connect the electrical plug, and verify operation. For compatible fuel filters, injection pumps, glow plugs, and complete engine fuel system components, visit our Forklift Engine Parts section. For engine fuel system specifications, refer to Bosch Diesel Systems technical documentation.

Technical Specifications

• SKU: SHUT-OFF-SOLENOID
• Type: Electromagnetic Fuel Shut-Off Solenoid Valve
• Voltage: 12V DC / 24V DC (Application Dependent)
• Coil: Class H (180°C), Epoxy Encapsulated, 25-40W Continuous
• Plunger: Hardened Steel, Precision-Guided
• Seal: Hardened Seat, Bubble-Tight Shut-Off
• Connector: Weather-Resistant 2-Pin Deutsch Style
• Application: Diesel & LPG Forklift Engine Fuel Systems

Compatible Engine Platforms

Each fuel shut-off solenoid undergoes coil resistance verification at 20°C, pull-in and hold-in force measurement on a calibrated test fixture, plunger stroke verification, dielectric strength testing at 1500V AC, and 100-cycle endurance testing. The solenoid is packaged in anti-static foam with the connector protected. 12-month warranty. Troubleshooting tip: if the engine fails to start or shuts off immediately, check for 12V (or 24V) at the solenoid connector with the ignition ON. No voltage indicates a wiring, fuse, or ignition switch issue. Voltage present but no audible click indicates a failed coil — verify with resistance measurement. For fleet diagnostic support or solenoid identification assistance, contact our technical team.