How do I confirm pilotpart173523 fits my machine?

Compare the OEM or reference part number, machine model, engine model, and serial number. You can also submit a fitment inquiry before ordering.

In Stock

24V 2100W Intake Air Heater 3970001 for Cummins Engine 4B5.9 6B5.9 ISB6.7 QSB6.7 Dodge Ram Pickup Truck 2500 3500 4000

For Cummins Air Heater

Air Heater 6B5.9 for Cummins

OEM / REF: 6B5.9SKU: pilotpart173523

24V 2100W Intake Air Heater 3970001 for Cummins Engine 4B5.9 6B5.9 ISB6.7 QSB6.7 Dodge Ram Pickup Truck 2500 3500 4000 is a Air Heater replacement part for Cummins HVAC Parts, categorized under HVAC Parts > Air Heater. Use OEM part number 6B5.9 and confirm machine model, engine model, and serial details before check...

Stock: In stock
Condition: New
Fitment: Cummins HVAC Parts
Category: Air Heater

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$47.00USD/EA

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 22 – Oct 29
10	Oct 20 – Oct 27
50	Oct 18 – Oct 25

Estimates from today; confirm exact lead time before payment.

Quantity

Buy online now or add to your quote list for bulk pricing and fitment confirmation.

Confirm fitment before ordering →

Lead times can vary by freight route and customs. Contact support for expedited shipping.

Air Heater Description

This Air Heater is indexed for Cummins Fit for following models: Freightliner Truck:FL50, FL60, FL70, FL80, FS65, MT35, MT45, MT55, FC70 Ford Truck:CF700, F700 Dodge Truck:D250, D350, W250, W350, 3500 Dodge Ram Pickup Truck:2500, 3500, 4000. Compare reference number 6B5.9 against the label on your existing Cummins component before ordering.

Additional cross references on file: ISB6.7, QSB6.7. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

6B5.9ISB6.7 QSB6.7

Applications

Cummins Fit for following models: Freightliner Truck:FL50, FL60, FL70, FL80, FS65, MT35, MT45, MT55, FC70 Ford Truck:CF700, F700 Dodge Truck:D250, D350, W250, W350, 3500 Dodge Ram Pickup Truck:2500, 3500, 4000

Fitment Notes

Brand or application signal: Cummins HVAC Parts
Product family: Air Heater
System category: HVAC Parts > Heating Parts > Air Heater
Recommended verification: OEM number, engine model, serial number, old part photos, and dimensions.

Shipping & Returns

Availability: InStock
Shipping: Shipping quotes can be confirmed before payment for heavy or urgent orders.
Returns: Returns are easier when fitment is confirmed before ordering.
B2B support: Bulk, fleet, and repair-shop requests can be handled through the inquiry form.

Frequently Asked Questions

How do I confirm this part fits my machine?

Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.

Can I order if my part number is not listed?

Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.

Is this an OEM part?

Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.