In StockFront Idler 203-30-52112 for Komatsu PC128US-2 PC128UU-2 PC138US-2 PC100-5 PC120-5 PC130-5 PC120-6 PC130-6 PC130-7 PC130-8 PC138US-8 PC138US-10
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For KomatsuFront Idler

Idler 203-30-52112 for Komatsu CS210-1

OEM / REF: 203-30-52112SKU: pilotpart380120

Front Idler 203-30-52112 for Komatsu PC128US-2 PC128UU-2 PC138US-2 PC100-5 PC120-5 PC130-5 PC120-6 PC130-6 PC130-7 PC130-8 PC138US-8 PC138US-10 is a Idler replacement part indexed for Komatsu CS210-1 and Komatsu PC100-5, with 3 application records on file. Match OEM part number 203-30-52112 and confirm fitment for K...

Stock
In stock
Condition
New
Fitment
Komatsu Transmission & Undercarriage Parts
Category
Front Idler
  • Fitment support before you order
  • Worldwide delivery options

Front Idler Description

This Front Idler is indexed for Komatsu CS210-1; Komatsu PC100-5; Komatsu PC100-5C; Komatsu PC100-5S. Compare reference number 203-30-52112 against the label on your existing Komatsu component before ordering.

Before checkout, compare OEM part number 203-30-52112, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.

Applications

  • Komatsu CS210-1
  • Komatsu PC100-5
  • Komatsu PC100-5C
  • Komatsu PC100-5S
  • Komatsu PC100-5Z
  • Komatsu PC100-6
  • Komatsu PC100-6E
  • Komatsu PC100-6S
  • Komatsu PC100-6Z
  • Komatsu PC120-5
  • Komatsu PC120-5C
  • Komatsu PC120-5M
  • Komatsu PC120-5S
  • Komatsu PC120-5Z
  • Komatsu PC120-6
  • Komatsu PC120-6E
  • Komatsu PC120-6E0
  • Komatsu PC120-6E0-T2
  • Komatsu PC120-6H
  • Komatsu PC120-6J
  • Komatsu PC120-6S
  • Komatsu PC120-6Z
  • Komatsu PC120-6Z-A1
  • Komatsu PC120LC-6
  • Komatsu PC120LC-6E0
  • Komatsu PC120SC-6
  • Komatsu PC128US-2
  • Komatsu PC128US-2-A
  • Komatsu PC128US-2-AC
  • Komatsu PC128US-2-AT
  • Komatsu PC128UU-2
  • Komatsu PC130-5
  • Komatsu PC130-5S
  • Komatsu PC130-6
  • Komatsu PC130-6E
  • Komatsu PC130-6E0-T2
  • Komatsu PC130-6G
  • Komatsu PC130-6K
  • Komatsu PC130-7
  • Komatsu PC130-7K
  • Komatsu PC130-8
  • Komatsu PC138US-10
  • Komatsu PC138US-2
  • Komatsu PC138US-2-A
  • Komatsu PC138US-2-AC
  • Komatsu PC138US-2-AT
  • Komatsu PC138US-2E
  • Komatsu PC138US-8
  • Komatsu PC138USLC-10
  • Komatsu PC138USLC-2
  • Komatsu PC138USLC-8
  • Komatsu BM020C-1
  • Komatsu BR200S-1
  • Komatsu BR200T-1
  • Komatsu BR210JG-1
  • Komatsu BZ200-1
  • Komatsu BZ210-1
  • Komatsu Komatsu c PC128UU-2 PC138US-2 PC100-5 PC120-5 PC130-5 PC120-6 PC130-6 PC130-7 PC130-8 PC138US-8 PC138US-10
  • Komatsu BM020C-1 S/N 1001-UP MOBILE CRUSHERS AND RECYCLERS BR200S-1 S/N 1001-UP MOBILE CRUSHERS AND RECYCLERS BR200T-1 S/N 1101-UP MOBILE CRUSHERS AND RECYCLERS BR210JG-1 S/N 1002-UP MOBILE CRUSHERS AND RECYCLERS BZ200-1 S/N 1006-UP MOBILE CRUSHERS AND RECYCLERS BZ210-1 S/N 1001-UP (Overseas Version) MOBILE CRUSHERS AND RECYCLERS BZ210-1 S/N 1001-UP MOBILE CRUSHERS AND RECYCLERS CS210-1 S/N 10001-UP CRAWLER STABILIZERS PC100-5 S/N 28001-UP EXCAVATORS PC100-5C S/N 28001-UP (Custom Spec.) EXCAVATORS PC100-5S S/N 32402-UP EXCAVATORS PC100-5Z S/N 32402-UP EXCAVATORS PC100-6 S/N 40001-UP EXCAVATORS PC100-6E S/N 40001-UP EXCAVATORS PC100-6S S/N 40001-UP EXCAVATORS PC100-6Z S/N 40001-UP (Excel Spec.) EXCAVATORS PC100-6Z S/N 40001-UP EXCAVATORS PC120-5 S/N 30001-UP EXCAVATORS PC120-5C S/N 36601-UP (Custom Spec.) EXCAVATORS PC120-5M S/N 36601-UP (Mighty Spec.) EXCAVATORS PC120-5S S/N 36601-UP EXCAVATORS PC120-5Z S/N 36601-UP (Excel Spec.) EXCAVATORS PC120-5Z S/N 36601-UP EXCAVATORS PC120-6 S/N 45001-UP EXCAVATORS PC120-6E S/N 45001-UP EXCAVATORS PC120-6E0 S/N 70001-UP (SAA4D102E-2 (Emission) Eng. Installed) EXCAVATORS PC120-6E0-T2 S/N 70001-UP EXCAVATORS PC120-6H S/N 45001-UP EXCAVATORS PC120-6J S/N 45001-UP EXCAVATORS PC120-6S S/N 45001-UP EXCAVATORS PC120-6Z S/N 45001-UP EXCAVATORS PC120-6Z-A1 S/N 45001-UP EXCAVATORS PC120LC-6 S/N 45001-UP (Overseas Version) EXCAVATORS PC120LC-6E0 S/N 70001-UP (SAA4D102E-2 (Emission) Eng. Installed) EXCAVATORS PC120SC-6 S/N 10001-UP EXCAVATORS PC128US-2 S/N 5001-9500 (For EU) EXCAVATORS PC128US-2 S/N 5001-9500 (For North America) EXCAVATORS PC128US-2 S/N 5001-9500 EXCAVATORS PC128US-2-A S/N 9501-UP EXCAVATORS PC128US-2-AC S/N 9501-UP EXCAVATORS PC128US-2-AT S/N 9501-UP EXCAVATORS PC128UU-2 S/N 5001-UP (For North America) EXCAVATORS PC130-5 S/N 36601-UP EXCAVATORS PC130-5S S/N 36601-UP EXCAVATORS PC130-6 S/N 45001-UP EXCAVATORS PC130-6E S/N 45001-UP EXCAVATORS PC130-6E0-T2 S/N 60001-UP EXCAVATORS PC130-6G S/N 45001-UP EXCAVATORS PC130-6K S/N K30001-UP EXCAVATORS PC130-7 S/N 70001-UP (For Australia) EXCAVATORS PC130-7K S/N 70001-UP EXCAVATORS PC130-8 S/N 80001-UP EXCAVATORS PC130-8 S/N B10001-UP EXCAVATORS PC130-8 S/N C30001-UP EXCAVATORS PC138US-10 S/N F40003 AND UP EXCAVATORS PC138US-2 S/N 4501-UP (Overseas Version) EXCAVATORS PC138US-2-A S/N 4501-UP EXCAVATORS PC138US-2-AC S/N 4501-UP EXCAVATORS PC138US-2-AT S/N 4501-UP EXCAVATORS PC138US-2E S/N 4501-UP (For EU) EXCAVATORS PC138US-8 S/N 20001-24509 (For EU) EXCAVATORS PC138US-8 S/N 20001-24509 EXCAVATORS PC138US-8 S/N 20001-UP EXCAVATORS PC138US-8 S/N 24510-UP EXCAVATORS PC138USLC-10 S/N 40001-UP EXCAVATORS PC138USLC-2 S/N 1501-UP (SAA4D95LE-3 (TIER 2) Eng. Installed) EXCAVATORS PC138USLC-8 S/N 20001-24509 (For North America) EXCAVATORS PC138USLC-8 S/N 24510-UP (North America Standard Machine) EXCAVATORS

Specifications

Part Number203-30-52112, 2033052112

Fitment Notes

Brand or application signal
Komatsu Transmission & Undercarriage Parts
Product family
Front Idler
System category
Transmission & Undercarriage Parts > Crawler Undercarriage Parts > Front Idler
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.