Your Whole New Supply Chain For Heavy-Duty Parts
Whatsapp：
+86 18915027366
Phone：
+86 18915027366
12V: 3990770 / SA-4931-12; 24V: 3990771 / SA-4931-24
OE-Equivalent Replacement Quality
IATF 16949 / ISO 9001 / CE / RoHS
50 pcs
7 - 15 Days
12 Months
3990770 and 3990771 are voltage-specific members of the SA-4931 family for Cummins fuel shutdown applications. The catalog line also mentions 3977620, but independent evidence did not support automatic interchange, so the public page retains only the verified 3990770/3990771 pair.
Item | Confirmed Information |
Product Type | Fuel shutdown solenoid |
OE / Reference Numbers | 12V: 3990770 / SA-4931-12; 24V: 3990771 / SA-4931-24 |
Electrical Version | 12V or 24V, selected by the SA-4931 suffix |
Application Scope | Cummins 4BT, 6BT, QSL, K19, K50 and NT855 applications subject to removed-part matching |
MOQ | 50 pcs |
Delivery Time | 7 - 15 Days |
Warranty | 12 Months |
Use 3990770 or SA-4931-12 for 12V and 3990771 or SA-4931-24 for 24V. Verify the bracket, rod end, connector and Cummins engine arrangement before the wider application list is used for stock planning.
Matching Point | Buyer Action |
12V group | 3990770 / SA-4931-12. |
24V group | 3990771 / SA-4931-24. |
Excluded number | Do not add 3977620 to the public interchange group without stronger evidence. |
Mechanical match | Compare bracket angle, hole spacing, rod end and adjustment length. |
Electrical match | Confirm voltage, connector and control sequence. |
A supplier catalog can place several nearby references on one card even when independent product pages support only part of the group. Restricting the public offer to verified numbers protects buyers from a broad interchange claim and makes later field feedback easier to trace.
Service or Order Situation | Recommended Review |
3977620 appears in a catalog | Hold the number outside the public interchange until configuration evidence is stronger. |
Engine family is broad | Require old OE, voltage and photos before fitment approval. |
Rod pulls then releases | Test hold-circuit voltage and relay behavior. |
Bracket holes differ | Treat the candidate as another configuration and stop installation. |
State 3990770 12V or 3990771 24V, Cummins engine data, old label, bracket and connector geometry and quantity.
RFQ Item | What to Provide |
OE / reference | 12V: 3990770 / SA-4931-12; 24V: 3990771 / SA-4931-24 |
Voltage | 12V or 24V, selected by the SA-4931 suffix |
Application | Cummins 4BT, 6BT, QSL, K19, K50 and NT855 applications subject to removed-part matching |
Photos | Old label, connector face, mounting bracket, rod or cable end and one complete removed-part view |
Commercial request | Quantity, destination market and packing requirement |
3990770 and SA-4931-12 form the confirmed 12V group. The system voltage, old label and connector should agree before the wider Cummins application list is used to approve the order.
3990771 and SA-4931-24 form the confirmed 24V group. Keep the 24 suffix visible on purchase, packing and warehouse records so a mixed-voltage fleet does not receive the 12V unit.
The supplier catalog placed 3977620 near the SA-4931 group, but independent product-page evidence did not confirm a safe interchange. Excluding an uncertain number is preferable to creating a confident but unreliable fitment claim.
No. Cummins 4BT, 6BT, QSL, K19, K50 and NT855 references appear online, yet the installed voltage, bracket, rod, connector and fuel-system arrangement must agree with the removed part.
A missing hold feed, weak relay, high connector resistance or control-circuit fault can remove power after the initial pull. Measure voltage during both stages before the solenoid is condemned.
Send the full OE and voltage group, Cummins engine and serial information, connector face, bracket-hole spacing, rod-end view and quantity. Separate 12V and 24V demand into different order lines.
Send the verified SA-4931 voltage group, Cummins engine information, quantity and removed-part photos for quotation.
