What 3054608 Actually Does
The fuel shutoff solenoid sits on the injection pump housing and controls whether fuel reaches the engine. Key on, the pull coil energizes and lifts the plunger. Once seated, a lower-draw hold coil keeps it there as long as the ignition is live. Kill the key, the coil drops out, the plunger falls, fuel stops, engine dies. That is the entire job.
This is the three-terminal style used on Cummins mechanical fuel systems: pull, hold, and ground. The kit ships complete so you are not chasing a bracket, a plunger, or hardware after the old one comes off. Voltage is 12V. Do not put it on a 24V system and expect the coil to survive.
Two failure modes dominate. The pull coil burns open and the engine cranks but never gets fuel. Or the hold coil fails and the engine fires, runs a second or two, then dies the moment the pull circuit drops out. Both feel like a fuel supply problem until you put a meter on the terminals.
Why These Numbers Cross
3054608, 3021090, 134072, PAI 180204 and 3054605 all describe the same physical shutoff solenoid family used across Cummins mechanical pump applications. The numbers differ because of supersession and because aftermarket and parts-house brands catalog the same hardware under their own systems. The solenoid body, the three-terminal pattern, the plunger throw and the mounting interface are what make them interchange.
Cummins revised this part through the production run, so an engine built early may carry one number on the tag while the current replacement carries another. That is normal supersession, not a different part. PAI 180204 is an aftermarket catalog number covering the same assembly, and 134072 shows up through parts distribution channels for the same solenoid.
Cross-reference is where you start, not where you finish. Pull the old solenoid and read the number stamped or tagged on the body, or verify against your engine serial number. Pump variations exist within the N14 and NTA855 families and the serial number is what settles it.
Check Before You Order
Get the engine serial number off the dataplate. That is the single most useful piece of information when you are matching a fuel system part on an N14 or NTA855, because the pump configuration drives which solenoid fits. Confirm the system is 12V while you are at it.
Before you condemn the solenoid, test it. Check for battery voltage at the pull terminal during crank and at the hold terminal with the key on. No voltage means you have a relay, fuse, ignition switch or wiring problem, not a solenoid problem. Measure coil resistance to ground on both coils; an open circuit confirms a burned coil.
Count the terminals on the old unit and photograph the wiring before you disconnect it. Swapping the pull and hold wires will cook a new coil in short order. Check the plunger bore for carbon and the linkage for free movement so the new solenoid is not fighting a mechanical bind.
3054608 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 3054608. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| Cross-Reference | 3021090, 134072, PAI 180204, 3054605 |
Frequently asked questions
Engine cranks but won't start — is the shutoff solenoid the cause?
It is a common cause on these mechanical Cummins engines. If the pull coil is open or not getting voltage during crank, the plunger never lifts and no fuel reaches the engine. Put a meter on the pull terminal while someone cranks it. Voltage present and no plunger movement points at the solenoid.
Will 3054608 fit my N14 if my old part is tagged a different number?
Possibly. 3021090, 134072, PAI 180204 and 3054605 are listed as cross-references for the same solenoid, and supersession means several numbers can describe one part. We cannot promise fitment from a number alone. Confirm with your engine serial number or the number read directly off the old solenoid.
My engine runs for a second then shuts off. Which coil failed?
That pattern points at the hold coil. The pull coil lifts the plunger during crank, then hands off to the hold coil when the key returns to run. If the hold coil is open or not powered, the plunger drops and fuel is cut. Check for voltage at the hold terminal with the key in run.
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Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
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