How do I confirm pilotpart203539-7486835884280 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

Starter Motor 129129-77010 171008-7 for Komatsu PC25 PC28 PC30 PC15 PC20 PC35 PC38 PC38 PC40FR Excavator WA20-2 Wheel Loader 3D78 Engine

For Komatsu Starter Motor

Starter Motor 3D78 for Komatsu

OEM / REF: 3D78SKU: pilotpart203539-7486835884280

Starter Motor 129129-77010 171008-7 for Komatsu PC25 PC28 PC30 PC15 PC20 PC35 PC38 PC38 PC40FR Excavator WA20-2 Wheel Loader 3D78 Engine is a Starter Motor replacement part for Komatsu Engine Spare Parts, categorized under Engine Spare Parts > Starter Motor. Use OEM part number 3D78 and confirm machine model, engine...

Stock: In stock
Condition: New
Fitment: Komatsu Engine Spare Parts
Category: Starter Motor

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$150.00USD/EA

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Aug 15 – Aug 22
10	Aug 13 – Aug 20
50	Aug 11 – Aug 18

Estimates from today; confirm exact lead time before payment.

Quantity

Confirm fitment before ordering →

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

Starter Motor Description

This Starter Motor is indexed for Komatsu Komatsu: PC25R-1 PC28UU-1 PC28UU-2 PC30R-7 PC15-3 PC20-7 PC35-UU PC25-1 PC30-7 PC28UU-2 PC28UG-2 PC28UD-2 Excavator for Komatsu: WA20-2 Wheel Loader 3D78 Engine. Compare reference number 3D78 against the label on your existing Komatsu component before ordering.

Additional cross references on file: WA20-2, 129129. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

3D78WA20-2 129129

Applications

Komatsu Komatsu: PC25R-1 PC28UU-1 PC28UU-2 PC30R-7 PC15-3 PC20-7 PC35-UU PC25-1 PC30-7 PC28UU-2 PC28UG-2 PC28UD-2 Excavator for Komatsu: WA20-2 Wheel Loader 3D78 Engine

Fitment Notes

Brand or application signal: Komatsu Engine Spare Parts
Product family: Starter Motor
System category: Engine Spare Parts > Engine Auxiliary Components > Starter Motor
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.