CUMMINS 3926381 GENUINE INTAKE MANIFOLD GRID HEATER – OEM FOR 1989–1998 5.9L CUMMINS

The Cummins 3926381 Genuine Intake Manifold Grid Heater is the complete OEM heater assembly for 5.9L Cummins diesel engines. It preheats incoming air during cold starts, improving combustion efficiency, reducing white smoke, and ensuring smooth operation in low temperatures.

Unlike standalone heater grids, this assembly includes the housing and integrated heating elements, making it a direct replacement for worn or damaged units.

Features & Benefits

• Complete OEM Assembly: Includes housing and heater elements for direct replacement.
• Cold Start Reliability: Warms intake air for improved ignition and reduced emissions in cold weather.
• Precision Fit: Designed for direct installation with factory intake components.

Fitment

• 1989–1993 Dodge Ram 2500/3500 5.9L Cummins (VE rotary pump)
• 1994–1998 Dodge Ram 2500/3500 5.9L Cummins (P7100 injection pump)
• Also compatible with certain Cummins 6BT industrial engines – verify part number

Cross Reference Part Numbers

• Cummins 3926381
• Replaces: 3928261
• Interstate McBee M-3926381

Frequently Asked Questions

How is this different from a heater grid?

This part includes the full assembly with housing, not just the heating element.

Do I need to replace the grid heater and housing together?

Not always. If the housing is damaged or corroded, replacing the complete assembly is recommended.

Can this be used on performance builds?

Yes, but many high-performance builds delete the grid heater to improve airflow.

Tags

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