12V Fuel Shutoff Solenoid 3921978 / 3918600 for Cummins 6C 6CT 6CTA 8.3L
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
| Application | Models / Details |
|---|---|
| Cummins engines | 6C, 6CT, 6CTA 8.3L fuel-pump shutdown applications |
Product Overview
A failing stop solenoid may produce a no-shutoff condition, intermittent shutdown, no-start if it remains in the fuel-off position, or a click without full plunger travel. Before replacement, verify power, ground and linkage movement so an electrical-feed problem is not mistaken for a bad solenoid.
Cummins replacement references identify 3921978 as a 12V fuel-pump shutoff solenoid for 6C/6CT/6CTA engines.
Key Features & Performance
- Restores electrically controlled engine shutdown
- Part-number-focused fitment for diesel fuel-control systems
- Designed to replace a failed/sticking stop-solenoid function
- Key specification(s): 12V
Replaces / Cross-References
3921978, 3918600
Fitment Notes
We do our best to list all compatible models, but equipment manufacturers may use different components within the same model based on engine, serial number or production date. Compare the original part and reference numbers before ordering.
Frequently Asked Questions
How do I verify fitment?
Compare the listed model/application, reference numbers, voltage/specification where shown, connector style and physical configuration to the part being removed. Serial-number breaks can apply on industrial equipment.
Is this an OEM part?
This listing is for a replacement component. It should not be assumed to be a genuine OEM-branded part unless the product packaging/listing explicitly states that.