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SPM-HEP-4693 is the 12 volt fuel shutdown solenoid with a mounting flange, moulded boot, a linkage rod with rod end and a sealed three pin plug on a sleeved lead. It is used on Cummins 6CT engines. This aftermarket version has the same mounting and electrical connector as the original, so it plugs in and bolts on where the old one came off.
It replaces Cummins 3990770 and Woodward SA-4931-12.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Fuel Shutdown Solenoid 12V |
| Replaces | Cummins 3990770 |
| Voltage | 12 V |
| Cross references | Woodward SA-4931-12 |
| Fits | Cummins 6CT 8.3 engines |
| Condition | New, aftermarket |
| Stat. HS-Code | 850590 |
| Country of Manufacture | China |
Cummins machines
Check the part number on your old unit before ordering.
| Cummins Part No.(SPM Part No.) | Fits |
|---|---|
| 3990770(SPM-HEP-4693) | Cummins 6CT 8.3 engines |
| Brand | Part No. |
|---|---|
| Cummins | 3990770 |
| Woodward | SA-4931-12 |
All of these numbers are the same part.
Engine will not start or will not stop
A failed fuel shutoff solenoid holds the fuel off (no start) or will not cut it (no stop). Check power at the plug first.
Engine cuts out
A weak pull-in or hold coil lets the solenoid drop out under vibration and the engine stalls.
Sticking plunger
Dirt and corrosion stop the plunger moving freely. Replacing the solenoid is quicker than freeing an old one.
Fleet spares
A spare solenoid on the van turns a no-start into a quick fix on site.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| FridayParts | USD 53.92 | 31 Oct 2026 |
| eBay, aftermarket seller | USD 65.99 | 31 Oct 2026 |
| SINOCMP | USD 69.00 | 31 Oct 2026 |
| WDPart | USD 69.00 | 31 Oct 2026 |
| Buy Machinery | USD 70.86 | 31 Oct 2026 |
| Landtop | USD 73.33 | 31 Oct 2026 |
| Foster Truck (LarryB's) | USD 84.99 | 31 Oct 2026 |
| MyMROmarts | USD 89.99 | 31 Oct 2026 |
| Spare Part Mart | USD 45.65 | Today |
Our price of USD 45.65 is 15% to 49% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Yes, it is a direct replacement for the Cummins 3990770 with the same fitting.
There is no fixed interval. It is changed when it fails, and many fail from water in the plug or chafed wiring rather than wear.
A fault code for this circuit, readings that jump or stay fixed, or a part that does not respond with power at the plug.
Usually. Clear them after fitting and run the machine, so old codes are not mistaken for a new fault.
Read the fault codes, then check the plug and wiring for corrosion or a broken wire. A wiring fault reads the same as a failed solenoid.
No. It is an aftermarket solenoid made to replace the Cummins 3990770. It is not made by the original manufacturer; the number only shows what it replaces.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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