12V Stop Solenoid 3991167 SA-4941-12 – Service Part for Cummins 4BT
12V Stop Solenoid 3991167 SA-4941-12, replacement for Cummins 4BT engines in Hyundai R130/R170 — IP67 sealed with Class H coil insulation rated to 180°C, supporting up to 500,000 engagement cycles. Delayed shutdown response or intermittent engagement signals winding degradation before complete failure, making proactive replacement at electrical inspection intervals cost-effective Single-component swap preferred over full harness replacement unless recurring faults trace to upstream wiring Replacement interval guidance included with shipment to support fleet-level preventive planning across aging Hyundai R130 and R170 units.