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Cummins SD-008A2 is the 24 volt fuel shutoff solenoid with a mounting bracket, grey moulded boot, adjustable linkage rod with clip, and a black three pin plug on a sleeved lead. It is used on Cummins 6BT 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.
The same part is also sold as 3974947 and D59-105-06.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Fuel Shutoff Solenoid 24V |
| Replaces | Cummins 3974947 |
| Voltage | 24 V |
| Engine | Cummins 6BT |
| Cross references | SD-008A2, D59-105-06 |
| Fits | Cummins 6BT 5.9 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 |
|---|---|
| 3974947(SPM-HEP-4714) | Cummins 6BT 5.9 engines |
| Brand | Part No. |
|---|---|
| Cummins | 3974947 |
| Cummins | SD-008A2 (this page, SPM-HEP-4714) |
| Cummins | D59-105-06 |
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 |
|---|---|---|
| eBay, aftermarket seller | USD 59.40 | 31 Oct 2026 |
| SINOCMP | USD 69.00 | 31 Oct 2026 |
| WDPART | USD 84.00 | 4 Nov 2026 |
| Spare Part Mart | USD 34.09 | Today |
Our price of USD 34.09 is 43% to 59% 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 SD-008A2 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.
Yes. Many machines have 12 V and 24 V versions of the same solenoid. Check the old part or the machine plate before fitting.
Usually. Clear them after fitting and run the machine, so old codes are not mistaken for a new fault.
No. It is an aftermarket solenoid made to replace the Cummins SD-008A2. 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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