In StockMain Bearing YM129001-02931 YM129150-02871 For Komatsu Excavator PC40MR-2 PC50MR-2 PC45R-8 Yanmar Engine 4TNV88 Komatsu Engine 4D88-6 4D88E 4D88E-6
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For KomatsuMain & Con Rod Bearings

Main and Con Rod Bearings YM12900102931 for Komatsu

OEM / REF: YM12900102931SKU: pilotpart233743-01

Main Bearing YM129001-02931 YM129150-02871 For Komatsu Excavator PC40MR-2 PC50MR-2 PC45R-8 Yanmar Engine 4TNV88 Komatsu Engine 4D88-6 4D88E 4D88E-6 is a Main and Con Rod Bearings replacement part indexed for Part Number and Komatsu Excavator PC40MR-2 PC50MR-2 PC45R-8 Yanmar Engine 4TNV88 Komatsu Engine 4D88-6 4D88E...

Stock
In stock
Condition
New
Fitment
Komatsu Engine Spare Parts
  • Fitment support before you order
  • Worldwide delivery options

Main & Con Rod Bearings Description

This Main & Con Rod Bearings is indexed for Part Number; Komatsu Excavator PC40MR-2 PC50MR-2 PC45R-8 Yanmar Engine 4TNV88 Komatsu Engine 4D88-6 4D88E 4D88E-6 Main Bearing YM129001-02931 YM129150-02871; Model: Komatsu Excavator PC40MR-2 PC50MR-2 PC45R-8 PC40MR-2-AC, PC50MR-2-AC Engine: Yanmar Engine 4TNV88 Komatsu Engine 4D88-6 4D88E 4D88E-6 Including: Main Bearing Set 5 Pairs With Thrust Plate Details: KOMATSU Engine Models: 4D88-6 4D88E-5X-AB 4D88E-5X-BB 4D88E-5X-AB 4D88E 4D88E-5X-AB 4D88E-5X-BC 4D88E-5X-AC 4D88E-5X-AB 4D88E-5X-AC 4D88E-6 YANMAR Engine Models: 4TNV88-DSA 4TNV88-GGEP 4TNV88-GYM 4TNV88-NBK 4TNV88-DSAP 4TNV88-GKM 4TNV88-LU2 4TNV88-XMS 4TNV88-XWL. Compare reference number YM12900102931 against the label on your existing Komatsu component before ordering.

Additional cross references on file: YM12915002871, PC40MR-2, PC50MR-2. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Applications

  • Part Number
  • Komatsu Excavator PC40MR-2 PC50MR-2 PC45R-8 Yanmar Engine 4TNV88 Komatsu Engine 4D88-6 4D88E 4D88E-6 Main Bearing YM129001-02931 YM129150-02871
  • Model: Komatsu Excavator PC40MR-2 PC50MR-2 PC45R-8 PC40MR-2-AC, PC50MR-2-AC Engine: Yanmar Engine 4TNV88 Komatsu Engine 4D88-6 4D88E 4D88E-6 Including: Main Bearing Set 5 Pairs With Thrust Plate Details: KOMATSU Engine Models: 4D88-6 4D88E-5X-AB 4D88E-5X-BB 4D88E-5X-AB 4D88E 4D88E-5X-AB 4D88E-5X-BC 4D88E-5X-AC 4D88E-5X-AB 4D88E-5X-AC 4D88E-6 YANMAR Engine Models: 4TNV88-DSA 4TNV88-GGEP 4TNV88-GYM 4TNV88-NBK 4TNV88-DSAP 4TNV88-GKM 4TNV88-LU2 4TNV88-XMS 4TNV88-XWL

Specifications

Part NumberYM12900102931,YM12915002871,12900102931,12915002871

Fitment Notes

Brand or application signal
Komatsu Engine Spare Parts
Product family
Main & Con Rod Bearings
System category
Engine Spare Parts > Block & Internal Parts > Main & Con Rod Bearings
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.

Confirm fitment

Send machine details before ordering high-risk parts.