How do I confirm pilotpart383507-7720450195704 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

Crankshaft YM129407-21000 for Engine Yanmar 4TNE84 Komatsu 4D84E

For Yanmar Crankshaft

Crankshaft YM129407-21000 for Yanmar

OEM / REF: YM129407-21000SKU: pilotpart383507-7720450195704

Crankshaft YM129407-21000 for Engine Yanmar 4TNE84 Komatsu 4D84E is a Crankshaft replacement part for Yanmar Engine Spare Parts, categorized under Engine Spare Parts > Crankshaft. Use OEM part number YM129407-21000 and confirm machine model, engine model, and serial details before checkout.

Stock: In stock
Condition: New
Fitment: Yanmar Engine Spare Parts
Category: Crankshaft

Fitment support before you order
Worldwide delivery options

In stock — ready to order

$451.00USD/EA

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Sep 23 – Sep 30
10	Sep 21 – Sep 28
50	Sep 19 – Sep 26

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.

Crankshaft Description

This Crankshaft is indexed for Yanmar YANMAR ENGINE MODEL: 4TNE84-AF 4TNE84-EAF KOMATSU ENGINE MODEL: 4D84E-3FB 4D84E-3B 4D84E-3C 4D84E-3D S4D84E-1FD 4D84E-3E 4D84E S4D84E Models: DOOSAN 1340XL Loader KOBELCO SK40SR-2 Excavator KOHLER 15CCO,15CCFO,15R091,15ROY,15ROZ Generator KOMATSU BC70 Drill Machine Komatsu PC45-1,PC40-7,PC40R-8,PC45R-8,PC40MRX-1-E,PC45MRX-1-E Mini Excavator Komatsu RAM700-3 Backhoe Komatsu SK510,SK815,SK820,SK820-5 Skid Steer MUSTANG 2040,2042,2044,2050 Loader YANMAR YEG400DSHC,YEG400DSHS,YEG400DTHC,YEG400DTHS Generetor ariens gravely PRO CHIP 944. Compare reference number YM129407-21000 against the label on your existing Yanmar component before ordering.

Additional cross references on file: 12940721000. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Part Numbers and Cross References

YM129407-21000 12940721000

Applications

Yanmar YANMAR ENGINE MODEL: 4TNE84-AF 4TNE84-EAF KOMATSU ENGINE MODEL: 4D84E-3FB 4D84E-3B 4D84E-3C 4D84E-3D S4D84E-1FD 4D84E-3E 4D84E S4D84E Models: DOOSAN 1340XL Loader KOBELCO SK40SR-2 Excavator KOHLER 15CCO,15CCFO,15R091,15ROY,15ROZ Generator KOMATSU BC70 Drill Machine Komatsu PC45-1,PC40-7,PC40R-8,PC45R-8,PC40MRX-1-E,PC45MRX-1-E Mini Excavator Komatsu RAM700-3 Backhoe Komatsu SK510,SK815,SK820,SK820-5 Skid Steer MUSTANG 2040,2042,2044,2050 Loader YANMAR YEG400DSHC,YEG400DSHS,YEG400DTHC,YEG400DTHS Generetor ariens gravely PRO CHIP 944

Fitment Notes

Brand or application signal: Yanmar Engine Spare Parts
Product family: Crankshaft
System category: Engine Spare Parts > Block & Internal Parts > Crankshaft
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.