Gear 129900-21200 for Komatsu

OEM / REF: 129900-21200SKU: pilotpart395411

Crankshaft Gear 129900-21200 for Komatsu 4D94E-1 4D94LE-2 4D98E-1 PC75-1 PC75R-2 PC95R-2 WA65-3 WB140-2 WB150-2 Original is a Gear replacement part for Komatsu Engine Spare Parts, categorized under Engine Spare Parts > Gear. Use OEM part number 129900-21200 and confirm machine model, engine model, and serial details...

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

Gear Description

This Gear is indexed for Komatsu s: 4D94E-1A S/N 00101-UP 4D94LE-2 S/N 1713-UP (For D21A-8E0/D21P-8E0) 4D94LE-2Z-AB S/N 00251-UP 4D94LE-2Z-AC S/N 00251-UP 4D94LE-2Z-AD S/N 00101-UP (Canopy Spec.) 4D94LE-2Z-AD S/N 00251-UP 4D94LE-2Z-AE S/N 00101-UP (Cab Spec.) 4D94LE-2Z-AE S/N 00251-UP 4D94LE-2Z-BB S/N 00101-UP 4D94LE-2Z-BB S/N 00251-UP 4D94LE-2Z-BC S/N 00101-UP 4D98E-1A-TR S/N 00101-UP 4D98E-1C S/N 00101-UP CK20-1 S/N F00003-Up CK20-1 USA S/N F00003-Up CK25-1 S/N F00003-Up CK25-1 USA S/N F00003-Up CK30-1 S/N A30001-UP CK30-1 S/N F00003 AND UP CK30-1 USA S/N F00003-Up CK35-1 S/N A40001-UP CK35-1 S/N F00003 AND UP CK35-1 USA S/N F00003-Up PC110R-1 S/N 2265000001-Up PC110R-1 S/N 2265000306-Up PC110R-1 S/N 2265010001-Up PC110R-1 S/N 2265010170-Up PC75-1 S/N 5000001-Up PC75R-2 PC75R-2HD S/N 22E5210001-Up PC75R-2 PC75R-2HD S/N 22E5210500-Up PC75R-2 S/N 22E5200001-Up PC75R-2 S/N 22E5200763-Up PC75R-2 USA S/N 22E5200001-Up PC75R-2 USA S/N 22E5200763-Up PC75R-2 USA S/N 22E5210001-Up PC75R-2 USA S/N 22E5210500-Up PC80MR-3 S/N F00003 AND UP PC95R-2 S/N 21D5200001-Up PC95R-2 S/N 21D5200330-Up PC95R-2 S/N 21D5210001-Up PC95R-2 S/N 21D5220001-Up PC95R-2 S/N 21D5220114-Up PC95R-2 USA S/N 21D5200001-Up PC95R-2 USA S/N 21D5200330-Up PC95R-2 USA S/N 21D5210001-Up PC95R-2 USA S/N 21D5220001-Up PC95R-2 USA S/N 21D5220114-Up PW110R-1 S/N 2260000001-Up PW110R-1 S/N 2260000282-Up PW110R-1 S/N 2260010001-Up PW110R-1 S/N 2260010122-Up PW75-1 S/N 0000001-Up PW75R-2 S/N 22E0200001-Up PW75R-2 S/N 22E0200243-Up PW75R-2 S/N 22E0210001-Up PW75R-2 S/N 22E0210020-Up PW95R-2 S/N 21D0200001-Up PW95R-2 S/N 21D0200280-Up PW95R-2 S/N 21D0210001-Up PW95R-2 S/N 21D0220001-Up PW95R-2 S/N 21D0220079-Up SK09J-2 S/N SK09JF20001-Up SK1020-5 S/N 37CF00004-Up SK1020-5 turbo S/N 37CTF00003-Up SK1020-5 turbo USA S/N 37CTF00003-Up SK1020-5 USA S/N 37CF00004-Up SK1020-5N S/N A70001-A70746 SK1020-5NA SN A60001-UP SK1026-5 turbo S/N 37CTF50001-Up SK1026-5 turbo USA S/N 37CTF50001-Up SK1026-5N S/N A80001-A80531 WA100M-8 S/N H11051 - UP WA65-3 S/N HA940051 - HA940548 WA65-3 S/N HA940549 - HA940771 / H20772 - Up WA65PT-3 HA050075 - HA0500108 / H30109 and up WA65PT-3 S/N HA050051 - HA050074 WA75-3 FLEET S/N HA300051 and up WA75-3 S/N HA950051-HA950856; WA85-3 S/N HA960051-HA960165 WA75-3 S/N HA950857-HA951433 / H21434 - Up; WA85-3 S/N HA960166-HA960218 / H20219 - Up WA90-3 (S/N H20319 - up); WA95-3 (S/N H20672 - up) WA90-3 (S/N HA970051-HA970238); WA95-3 (S/N HA980051-HA980375) WA90-3 (S/N HA970239-HA970315 / H20316-H20318); WA95-3 (S/N HA980376-HA980668 / H20669-H20671) WB140-2 S/N 140F10001-Up WB140-2 S/N 140F11451-Up WB140-2 S/N 140F11531-Up WB140-2N S/N A20001-A20636 WB140-2N S/N A20637-UP WB140PS-2 S/N 140F50001-Up WB140PS-2 S/N 140F50092-Up WB140PS-2 S/N 140F50098-Up WB140PS-2N S/N A40001-A40033 WB140PS-2N S/N A40034-UP WB150-2 S/N 150F10001-Up WB150-2 S/N 150F10293-Up WB150-2 S/N 150F10303-Up WB150-2N S/N A60001-A60028 WB150-2N S/N A60029-UP WB150AWS-2 S/N 150F80001-Up WB150AWS-2N S/N A90001 WB150AWS-2N S/N A90002-UP WB150PS-2 S/N 150F50001-Up WB150PS-2 S/N 150F50020-Up WB150PS-2 S/N 150F50032-Up WB150PS-2N S/N A70001-A70009 WB150PS-2N S/N A70010-UP WB150WSC-2 S/N 150EF80001-Up WB91R-2 S/N 91F20001-Up WB91R-2 S/N 91F20070-Up WB91R-2 S/N 91F20127-Up WB91R-2 S/N 91F20145-Up WB91R-2 S/N 91F20250-Up WB93R-2 S/N 93F20001-Up WB93R-2 S/N 93F21638-Up WB93R-2 S/N 93F23075-Up WB93R-2 S/N 93F23453-Up WB93R-2 S/N 93F25184-Up WB97R-2 S/N 97F20001-Up WB97R-2 S/N 97F20172-Up WB97R-2 S/N 97F20743-Up WB97R-2 S/N 97F20887-Up WB97R-2 S/N 97F21409-Up WB97S-2 S/N 97SF10001-Up WB97S-2 S/N 97SF10281-Up WB97S-2 S/N 97SF10431-Up WB97S-2 S/N 97SF11205-Up. Compare reference number 129900-21200 against the label on your existing Komatsu component before ordering.

Additional cross references on file: YM129900-21200. If your machine plate shows a different number, submit a fitment inquiry with photos before checkout.

Applications

  • Komatsu s: 4D94E-1A S/N 00101-UP 4D94LE-2 S/N 1713-UP (For D21A-8E0/D21P-8E0) 4D94LE-2Z-AB S/N 00251-UP 4D94LE-2Z-AC S/N 00251-UP 4D94LE-2Z-AD S/N 00101-UP (Canopy Spec.) 4D94LE-2Z-AD S/N 00251-UP 4D94LE-2Z-AE S/N 00101-UP (Cab Spec.) 4D94LE-2Z-AE S/N 00251-UP 4D94LE-2Z-BB S/N 00101-UP 4D94LE-2Z-BB S/N 00251-UP 4D94LE-2Z-BC S/N 00101-UP 4D98E-1A-TR S/N 00101-UP 4D98E-1C S/N 00101-UP CK20-1 S/N F00003-Up CK20-1 USA S/N F00003-Up CK25-1 S/N F00003-Up CK25-1 USA S/N F00003-Up CK30-1 S/N A30001-UP CK30-1 S/N F00003 AND UP CK30-1 USA S/N F00003-Up CK35-1 S/N A40001-UP CK35-1 S/N F00003 AND UP CK35-1 USA S/N F00003-Up PC110R-1 S/N 2265000001-Up PC110R-1 S/N 2265000306-Up PC110R-1 S/N 2265010001-Up PC110R-1 S/N 2265010170-Up PC75-1 S/N 5000001-Up PC75R-2 PC75R-2HD S/N 22E5210001-Up PC75R-2 PC75R-2HD S/N 22E5210500-Up PC75R-2 S/N 22E5200001-Up PC75R-2 S/N 22E5200763-Up PC75R-2 USA S/N 22E5200001-Up PC75R-2 USA S/N 22E5200763-Up PC75R-2 USA S/N 22E5210001-Up PC75R-2 USA S/N 22E5210500-Up PC80MR-3 S/N F00003 AND UP PC95R-2 S/N 21D5200001-Up PC95R-2 S/N 21D5200330-Up PC95R-2 S/N 21D5210001-Up PC95R-2 S/N 21D5220001-Up PC95R-2 S/N 21D5220114-Up PC95R-2 USA S/N 21D5200001-Up PC95R-2 USA S/N 21D5200330-Up PC95R-2 USA S/N 21D5210001-Up PC95R-2 USA S/N 21D5220001-Up PC95R-2 USA S/N 21D5220114-Up PW110R-1 S/N 2260000001-Up PW110R-1 S/N 2260000282-Up PW110R-1 S/N 2260010001-Up PW110R-1 S/N 2260010122-Up PW75-1 S/N 0000001-Up PW75R-2 S/N 22E0200001-Up PW75R-2 S/N 22E0200243-Up PW75R-2 S/N 22E0210001-Up PW75R-2 S/N 22E0210020-Up PW95R-2 S/N 21D0200001-Up PW95R-2 S/N 21D0200280-Up PW95R-2 S/N 21D0210001-Up PW95R-2 S/N 21D0220001-Up PW95R-2 S/N 21D0220079-Up SK09J-2 S/N SK09JF20001-Up SK1020-5 S/N 37CF00004-Up SK1020-5 turbo S/N 37CTF00003-Up SK1020-5 turbo USA S/N 37CTF00003-Up SK1020-5 USA S/N 37CF00004-Up SK1020-5N S/N A70001-A70746 SK1020-5NA SN A60001-UP SK1026-5 turbo S/N 37CTF50001-Up SK1026-5 turbo USA S/N 37CTF50001-Up SK1026-5N S/N A80001-A80531 WA100M-8 S/N H11051 - UP WA65-3 S/N HA940051 - HA940548 WA65-3 S/N HA940549 - HA940771 / H20772 - Up WA65PT-3 HA050075 - HA0500108 / H30109 and up WA65PT-3 S/N HA050051 - HA050074 WA75-3 FLEET S/N HA300051 and up WA75-3 S/N HA950051-HA950856; WA85-3 S/N HA960051-HA960165 WA75-3 S/N HA950857-HA951433 / H21434 - Up; WA85-3 S/N HA960166-HA960218 / H20219 - Up WA90-3 (S/N H20319 - up); WA95-3 (S/N H20672 - up) WA90-3 (S/N HA970051-HA970238); WA95-3 (S/N HA980051-HA980375) WA90-3 (S/N HA970239-HA970315 / H20316-H20318); WA95-3 (S/N HA980376-HA980668 / H20669-H20671) WB140-2 S/N 140F10001-Up WB140-2 S/N 140F11451-Up WB140-2 S/N 140F11531-Up WB140-2N S/N A20001-A20636 WB140-2N S/N A20637-UP WB140PS-2 S/N 140F50001-Up WB140PS-2 S/N 140F50092-Up WB140PS-2 S/N 140F50098-Up WB140PS-2N S/N A40001-A40033 WB140PS-2N S/N A40034-UP WB150-2 S/N 150F10001-Up WB150-2 S/N 150F10293-Up WB150-2 S/N 150F10303-Up WB150-2N S/N A60001-A60028 WB150-2N S/N A60029-UP WB150AWS-2 S/N 150F80001-Up WB150AWS-2N S/N A90001 WB150AWS-2N S/N A90002-UP WB150PS-2 S/N 150F50001-Up WB150PS-2 S/N 150F50020-Up WB150PS-2 S/N 150F50032-Up WB150PS-2N S/N A70001-A70009 WB150PS-2N S/N A70010-UP WB150WSC-2 S/N 150EF80001-Up WB91R-2 S/N 91F20001-Up WB91R-2 S/N 91F20070-Up WB91R-2 S/N 91F20127-Up WB91R-2 S/N 91F20145-Up WB91R-2 S/N 91F20250-Up WB93R-2 S/N 93F20001-Up WB93R-2 S/N 93F21638-Up WB93R-2 S/N 93F23075-Up WB93R-2 S/N 93F23453-Up WB93R-2 S/N 93F25184-Up WB97R-2 S/N 97F20001-Up WB97R-2 S/N 97F20172-Up WB97R-2 S/N 97F20743-Up WB97R-2 S/N 97F20887-Up WB97R-2 S/N 97F21409-Up WB97S-2 S/N 97SF10001-Up WB97S-2 S/N 97SF10281-Up WB97S-2 S/N 97SF10431-Up WB97S-2 S/N 97SF11205-Up

Fitment Notes

Brand or application signal
Komatsu Engine Spare Parts
Product family
Gear
System category
Engine Spare Parts > Block & Internal Parts > Gear
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 & quote details

Send machine details and nameplate photos before ordering high-risk or quote-only parts.