21W-27-41110 Sprocket for Komatsu PC78MR PC88MR PC138 + More

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  • Part Number: 21W-27-41110
  • Sprocket
  • Fits Komatsu: PC78MR-6, PC78US-6, PC78US-8, PC78UU-6, PC88MR-6, PC88MR-8, PC88MR-10, PC138
  • Sold As - Individual Sprocket
$344.99 $403.99 Save $59.00
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Part Number

21W-27-41110
Product Type Sprocket

Fitment

Komatsu: PC78MR-6, PC78US-6, PC78US-8, PC78UU-6, PC88MR-6, PC88MR-8, PC88MR-10, PC138

Application

Equipment Type Excavator
Function Transfers drive power to the track system and helps maintain smooth engagement between the final drive sprocket and the track during machine travel.

Trust & Assurance

12-Month Warranty
Free Shipping in the USA
Proven Quality
Trusted by Contractors

Same machine series may use different undercarriage parts. Please confirm 21W-27-41110 matches your existing roller before ordering.

Product Description

  • This sprocket is designed for compatible Komatsu PC78MR-6, PC78US-6, PC78US-8, PC78UU-6, PC88MR-6, PC88MR-8, PC88MR-10, and PC138 models.
  • Precision-machined teeth help provide smooth, reliable engagement with the track system.
  • Crafted from high-strength steel for durability and long service life in demanding working conditions.
  • Part number 21W-27-41110 can be used to confirm compatibility with your existing sprocket.
  • Fits Komatsu models including PC78MR-6, PC78US-6, PC78US-8, PC78UU-6, PC88MR-6, PC88MR-8, PC88MR-10, and PC138. Please verify your machine model and part number before ordering.

Key Features

Direct Replacement: Aftermarket replacement sprocket using part number 21W-27-41110 for compatible Komatsu excavators.

Fits Komatsu Models: Compatible with Komatsu PC78MR-6, PC78US-6, PC78US-8, PC78UU-6, PC88MR-6, PC88MR-8, PC88MR-10, and PC138 models. Please confirm your machine model before ordering.

Heavy-Duty Steel Construction: Crafted from high-strength steel for durability and long service life in demanding working conditions.

Precision-Machined Teeth: Precision-machined teeth help provide smooth, reliable engagement with the track system while minimizing slippage and wear.

Protective Finish: Finished with protective coatings to help guard against rust and environmental damage in outdoor working conditions.

Warranty

12-Month Warranty.
Every rubber track, roller, sprocket, and idler we sell is backed by a 12-month warranty.
If it doesn’t hold up, we make it right.

Shipping

Free Shipping in the USA

We keep inventory stocked and offer fast nationwide shipping, often same or next business day, from strategically located warehouses.

Free Shipping in the USA

Fast & reliable delivery

12-Month Warranty

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