Fuel Shutdown Solenoid 3973958 37Z36-56010A for Cummins 6CT and Dongfeng diesel equipment

3973958 Fuel Shutdown Solenoid for Cummins 6CT and Dongfeng diesel equipment

3973958 provides electrical fuel cutoff control for Cummins 6CT and Dongfeng diesel equipment. A reliable replacement decision combines the OE reference with voltage, connector, bracket, rod or cable geometry and engine-side linkage. Equipment model wording narrows the search, but the removed assembly remains the final dimensional and electrical reference.

3973958 Product Information

Fitment Controls for 3973958

Match the complete stamped code because winding, mounting, terminal and linkage details can differ within the same family.

Service Diagnosis Before Replacing 3973958

No-start, start-then-stop and no-shutdown complaints can come from wiring, relay logic, voltage drop, a restricted fuel lever or the solenoid itself. Observe movement during the command and measure supply under load before condemning the part.

3973958 Replacement Approval Checklist

Release the order only after electrical, mechanical and application evidence agrees with the removed assembly. The checklist below keeps fleet, distributor and service-team information on one approval record.

3973958 Fuel Shutoff Solenoid FAQ

What voltage should be confirmed for 3973958?

3973958 is covered as 24V. Confirm the machine electrical system and the old label before purchase, then measure voltage at the connector during operation. A nominal battery description is not enough when converters, relays or previous wiring repairs may have changed the circuit.

Can the listed engine or machine model alone confirm 3973958?

No. Engine and equipment data narrow the candidate family, while the complete OE, voltage, bracket, connector and output geometry establish fitment. Production changes and previous repairs can place more than one shutdown arrangement in the same model range.

What should be tested when 3973958 does not move?

Measure voltage at the connector during the start or stop command, not only with the circuit unloaded. Check ground continuity, relay contacts, fuse condition and connector resistance. A visible 12V or 24V reading can collapse under load when terminals are corroded.

Why can the solenoid move while the engine fails to shut down?

The rod or cable may not carry full travel to the fuel lever because of free play, wrong adjustment, bracket flex or a binding pivot. Observe the lever itself and verify that it reaches the mechanical stop before treating the electrical actuator as the only fault.

What should be compared with the removed 3973958 assembly?

Compare the full label, voltage, connector face, terminal count, mounting-hole centers, body orientation, output end, resting length and required travel. Add one wider installed photo showing nearby pump or linkage clearance; close product photos alone may hide the geometry that decides fitment.

How can repeat coil damage be avoided after replacement?

Correct the reason the old unit failed before installation. Check supply voltage, pull/hold timing, linkage resistance, mechanical stops, terminal tightness and heat exposure. A new coil can fail quickly when the pull stage remains energized or the plunger cannot complete its designed stroke.

What information should a distributor include in the 3973958 RFQ?

Send 3973958 / 37Z36-56010A, confirmed voltage, Cummins 6CT and Dongfeng diesel equipment, old-label and connector photos, bracket and output measurements, quantity, destination and packing requirement. Mixed fleets should list each voltage and configuration on separate lines so technical approval and warehouse labeling remain traceable.

Request a Quote for 3973958

Send the complete OE group, confirmed voltage, Cummins 6CT and Dongfeng diesel equipment, removed-part photos, measurements and order quantity for a fitment-focused B2B quotation.