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3921978 / P613-A42V12 / 3921980 / P613-A42V24
OE-Equivalent Replacement Quality
IATF 16949 / ISO 9001 / CE / RoHS
50 pcs
7 - 15 Days
12 Months
| Quantity: | |
|---|---|
3921978 is a 12V fuel shutdown solenoid for Cummins 6CT and 6CTA 8.3L diesel applications. It is commonly cross-referenced with 3918600 and J921978. For replacement supply, compare the three-terminal connector, cable linkage and mounting layout with the removed unit before placing an order.
This replacement solenoid is specified for fuel-control service where a confirmed 3921978, 3918600 or J921978 reference is required. It is a practical sourcing option for buyers who need a clearly identified 12V unit rather than a generic solenoid selected only by appearance.
Product type | Fuel shutdown solenoid |
|---|---|
Primary reference | 3921978 |
Common matching references | 3918600, J921978 |
Electrical system | 12V |
Application family | Cummins 6CT and 6CTA 8.3L, subject to installed-unit verification |
Fitment checks | Three-terminal connector, cable linkage and mounting layout |
A fuel shutdown solenoid controls the fuel-stop action when the machine is switched off. Because connector configuration, linkage travel and bracket position can differ between engine installations, the part number is the starting point for replacement selection, not the only check. Use the removed unit and application data to confirm the installation before releasing a purchase order.
Why the part number must be compared
3921978 is the primary purchasing reference. 3918600 and J921978 are commonly used matching references, but buyers should still compare the original label and the complete installed assembly. This approach helps prevent a correct-looking solenoid from being selected for an engine with a different cable arrangement or connector layout.
How to compare the removed solenoid
Check that the system is 12V, then compare the connector terminal count, plug orientation, mounting points and cable linkage. A clear photo of the removed solenoid together with the engine model and reference number gives a distributor or service team enough information to confirm the replacement with less back-and-forth.
For a fast and accurate quotation, provide the 3921978 reference where available, the engine application, a photo of the connector and the installed-unit dimensions. These details let the supplier focus on the correct configuration and help buyers consolidate replacement demand without treating a fuel-control component as a universal electrical part.
Service fleets and parts distributors can use the cross-reference information to organize demand around the confirmed 12V configuration. Keep the supplier quotation tied to the original reference and visual fitment checks, especially when purchasing for mixed Cummins equipment or when the previous part is no longer fully legible.
The researched replacement configuration for 3921978 is 12V. Do not select a solenoid by voltage alone, however. Before ordering, verify the reference number, connector arrangement, cable linkage and mounting layout against the removed unit so the electrical and mechanical installation both match.
3918600 and J921978 are commonly associated with 3921978 in replacement listings. They are helpful comparison references, not a substitute for checking the installed solenoid. Match the original identifier and physical connection details before you treat the numbers as interchangeable for a particular engine installation.
This page is intended for Cummins 6CT and 6CTA 8.3L applications that use the confirmed 3921978 configuration. Equipment installations can vary, so an engine family alone does not establish fitment. Confirm the original number and installed connector, linkage and bracket arrangement before committing the replacement.
Send the original part number, engine model, system voltage, clear photos of the plug and linkage, and the quantities required. That information gives the seller a reliable basis to confirm the 12V version, verify the physical configuration and prepare a quotation that matches the actual service requirement.
