Choosing glow plugs for a Power Stroke or Duramax means matching the exact application, buying quality to avoid breakage, and checking the controller.
Match the application
Glow plugs are specific to engine and year, and the wrong length or heat range causes problems. Confirm the correct plug for your exact Power Stroke or Duramax (the Cummins uses a grid heater instead).
Buy quality
Cheap glow plugs can fail early or, worse, swell and break off during removal later. Quality plugs rated for your application are worth the small extra cost given the labor to access them.
- Correct length and heat range
- Quality brand rated for the application
- Full set when several have failed
Check the controller
Because the glow-plug control module and the plugs cause similar symptoms, confirm which has failed. Replacing plugs without checking the controller can leave the problem unsolved.
Frequently asked questions
Do Cummins engines use glow plugs?
No. The Cummins uses an intake grid heater. Glow plugs are on Power Stroke and Duramax diesels.
Should I buy a full set?
If several have failed and access is shared, a full set of quality plugs is efficient and avoids repeat labor.
Why buy quality glow plugs?
Cheap plugs can fail early or seize and break off during later removal, turning a simple job into an expensive one.
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