Fuel Shutdown Solenoid 3935429 SA-4755-12 for Cummins 6BT 5.9L engines

3935429 Fuel Shutdown Solenoid for Cummins 6BT 5.9L engines

3935429 provides electrical fuel cutoff control for Cummins 6BT 5.9L engines. 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.

3935429 Product Information

Fitment Controls for 3935429

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

Service Diagnosis Before Replacing 3935429

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.

3935429 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.

3935429 Fuel Shutoff Solenoid FAQ

How should the 12V and 24V 3935429 versions be separated?

Keep the complete voltage-specific reference and old-unit marking on the order. The 12V and 24V bodies may share mounting geometry, but their coils are not interchangeable. Confirm machine charging-system voltage at the old connector and label cartons by both OE and voltage to prevent mixed inventory.

Can the listed engine or machine model alone confirm 3935429?

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 3935429 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 3935429 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 3935429 RFQ?

Send 3935429 / SA-4755-12 / 3935430 / SA-4755-24, confirmed voltage, Cummins 6BT 5.9L engines, 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 3935429

Send the complete OE group, confirmed voltage, Cummins 6BT 5.9L engines, removed-part photos, measurements and order quantity for a fitment-focused B2B quotation.