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Denso Diesel Engine Glow Plug - DG-674

Denso Diesel Engine Glow Plug - DG-674

Ensure reliable cold weather starting with the Denso Glow Plug, designed to meet or exceed origina...

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eBayFits DENSO DG-674 glow plug CITROEN Berlingo 18-
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Product Information

Full details

The Denso DG-674 Glow Plug is designed for diesel vehicle owners seeking a reliable, OEM-standard replacement to ensure dependable cold-weather engine starting. This component excels at rapidly heating the combustion chamber to facilitate smooth ignitions in harsh temperatures, though owners should note that proper installation requires technical automotive knowledge and strict adherence to torque specifications to avoid engine damage.

All features

Model Part NumberDG-674
BrandDenso

Extended Product Information

FAQs

Should I replace all glow plugs at once?

Yes, it is recommended to replace them as a set to ensure balanced performance and heating times across all engine cylinders.

How do I know if the DG-674 is compatible with my car?

Cross-reference the Denso DG-674 part number with your vehicle's engine identification number or consult your owner's manual.

Is special equipment needed to install this?

You will need basic hand tools and a calibrated torque wrench to ensure the plug is seated correctly without being over-tightened.

How long do Denso glow plugs typically last?

While lifespan depends on climate and driving habits, Denso glow plugs are built for long-term reliability and typically match OEM service intervals.

What happens if I over-tighten the glow plug during installation?

Over-tightening can strip the threads in the cylinder head or fracture the glow plug body, which may require professional extraction.

Troubleshooting

Engine hard to start in cold conditions

Check if one or more glow plugs have failed, resulting in an incomplete heating sequence.

Rough idle immediately after startup

Inspect the glow plug relay or timer to ensure the plug is receiving power for the correct duration.

Dashboard glow plug indicator warning

Use a multimeter to check for resistance continuity in the glow plug circuit.

Pros and Cons

Pros

  • Consistent and reliable cold weather starting
  • Meets or exceeds OEM quality and performance standards
  • High-durability construction for long service life
  • Precision fitment reduces installation complications

Cons

  • Requires technical expertise for safe installation
  • Specific to select diesel engine models
  • Improper torque during installation can damage the glow plug or cylinder head

Setup, Compatibility & Care

Before installation, verify that the DG-674 part number matches your vehicle's specific engine code. Always replace glow plugs in complete sets rather than individually to ensure even heat distribution across all cylinders. When installing, use a torque wrench to meet the manufacturer's specified foot-pounds, as over-tightening can crack the ceramic or metal structure of the plug. Ensure the electrical contact is clean and free of corrosion. Periodically check the wiring harness for signs of brittle insulation or poor connectivity, as these can affect the electrical load the plug receives.

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