The Cummins Solenoid 3742‑12V (also referenced as SA‑3742‑12 / 3974947) is a 12‑volt fuel shutoff / stop solenoid used to control diesel fuel flow and engine shutdown in Cummins diesel engines and compatible industrial equipment. It delivers reliable performance and precision control for fuel systems in heavy‑duty applications.

Where It Is Used

Cummins diesel engines (e.g., 6BT, 6CT series) in generators and industrial machines
Construction equipment and excavators powered by Cummins
Fuel systems requiring controlled engine shutdown mechanisms
Compatible with engines using OEM part numbers SA‑3742‑12, 3974947, 1751ES

Key Functions & Features

Fuel shutoff control: Electromagnetically cuts fuel supply to stop the engine when ignition is turned off.
12‑Volt operation: Designed for standard 12V electrical systems.
Durable build: Robust design handles vibration and long service life.
Easy mounting: Mounts directly to engine or fuel system bracket with wiring harness included.
OEM compatibility: Fits engines that specify SA‑3742‑12 / 3974947 solenoid parts.