The Perkins T400504 Glow Plug is a premium-quality, 12-volt heating element engineered to ensure reliable cold starts in Perkins 400 Series diesel engines, particularly the 404D-22 model. Designed for rapid heating, this glow plug minimizes engine cranking time and reduces wear during cold weather operations, making it essential for standby generators, construction machinery, and agricultural equipment.
Key specifications include:
- Voltage: 12V
- Thread Size: M10 x 1.25
- Overall Length: 81.6 mm
- Heater Tip Length: 22.5 mm
- Stud Length: 45 mm
This glow plug is compatible with Perkins engines such as:
- 404D-22
- 403D-15
- 403D-17
- 403C-15
- 404C-22
Manufactured to meet or exceed OEM standards, the T400504 glow plug ensures optimal performance and longevity. It’s a trusted component in diesel generator systems and heavy-duty equipment requiring dependable cold-start capabilities.
Please confirm compatibility with your engine’s build list or documentation before purchase.
This part may fit other engines not listed here.


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