How do I confirm pilotpart106336 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

Common Rail Injector Pump 3973228 CCR1600 for Cummins ISLE 6CT Engine

For Isle Injection Pump

Injection Pump 3973228 for Isle

Q: What part numbers are associated with this Injection Pump?

3973228, 4902731, 4921431, QSL8.9

OEM / REF: 3973228SKU: pilotpart106336

Common Rail Injector Pump 3973228 CCR1600 for Cummins ISLE 6CT Engine is a Injection Pump replacement part indexed for Part Number and ISLE QSL8.9 QSL 6CT Engine. Match OEM part number 3973228 and confirm fitment for Isle Engine Spare Parts before ordering.

Stock: In stock
Condition: New
Fitment: Isle Engine Spare Parts
Category: Injection Pump

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$1,590.57USD/EA

~~$8,228.00~~Save 81%

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.

Injection Pump Description

This Injection Pump is indexed for Part Number; ISLE QSL8.9 QSL 6CT Engine. Compare reference number 3973228 against the label on your existing Isle component before ordering.

Additional cross references on file: 4902731, 4921431, QSL8.9. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

3973228 4902731 4921431 QSL8.9

Applications

Part Number
ISLE QSL8.9 QSL 6CT Engine

Specifications

Part Number	3973228, 4902731, 4921431

Fitment Notes

Brand or application signal: Isle Engine Spare Parts
Product family: Injection Pump
System category: Engine Spare Parts > Fuel System > Injection Pump
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.