Komatsu PC78MR-6 Final Drive Motor

Skip to product information
1 of 1

Limited Lifetime Warranty and No Core Charges

Fast and Free Shipping in the Continental U.S. - Usually Arrives in 3 Business Days

Komatsu PC78MR-6 Final Drive Motor

Komatsu PC78MR-6 Final Drive Motor

Everyday Low Price
$2,875.00
SAVE 65%
Regular price $2,875.00
Regular price Average Dealer Price: $8,130.00 Sale price $2,875.00 SAVINGS: $5,255.00
Sale Sold out
Shipping calculated at checkout.
In Stock
Limited Lifetime Warranty

Precision Final Drives stocks Komatsu PC78MR-6 travel motor assemblies ready for immediate dispatch to jobsites nationwide. Each Komatsu PC78MR-6 travel motor replacement arrives factory-tested and prefilled, allowing your crew to swap components and resume operations without delay. Our commitment to supplying final drive motor units at wholesale pricing means exceptional value without compromising build quality or longevity.

Have a question? Call us Today

OEM part number: 21W-60-41202
View full details
Best Wholesale Prices

We Source Only the Highest Grade Final Drive Travel Motors. Directly from Reputable Manufacturers Ensuring High Quality & Performance Across the Board.

24/7 Customer Support

Experience premium 24/7 Customer Support around the clock dedicated to ensuring your needs are met every time.

Can't Find What You're Looking For?

If you're having trouble locating the right final drive for your equipment, don't worry. Our Precision Pros are ready to help. Simply provide us with some details about your requirements, and we'll work tirelessly to find the ideal solution for you.

How We Can Help

Machine Make and Model: Let's start by identifying your machine make and model. This information will help us narrow down the options and find the perfect fit for your equipment.

Tailored Solutions Just for You

At Precision Final Drives, we're committed to ensuring that you find the perfect final drive solution for your needs. Our team of expert technicians, known as Precision Pros, is here to assist you every step of the way.

Personalized Assistance

Our Precision Pros are not just customer service representatives; they're technical experts dedicated to meeting your exact specifications. Whether you need assistance with product selection, installation guidance, or anything in between, we're here to ensure your satisfaction.

We stand behind our final drive motors with a 100% Warranty. Our motors are warranted to be free from defects in materials and workmanship under normal use up to 1 year.

This warranty is transferable and applies to all excavator motors which are no longer serviceable, in the intended application, due to a manufacturer defect. If you have one of our motors that requires replacement under warranty.

Precision Final Drives will send you a new motor free of charge, provided the motor passes inspection. After the initial 100% replacement period, warranty consideration is provided on a 1 year prorated basis determined by years of service for the life of the motor.

Learn More

If you would like to place an order, or need assistance, please call us at (888) 511-6332 8am-8pm Mon-Sat, or fill out our contact form

Is the New Komatsu PC78MR-6 Final Drive Motor Compatible With My Machine?

The Komatsu PC78MR-6 final drive motor duplicates factory engineering specifications for drop-in compatibility with your excavator's existing mounting configuration. Installation proceeds smoothly on either left or right track positions without fabricating custom mounts or rerouting hydraulic plumbing. When selecting Komatsu PC78MR-6 parts, consult our Precision Pros team to confirm before finalizing your purchase.

Key Specifications for the Komatsu PC78MR-6 Final Drive Motor

Critical specifications for this Komatsu PC78MR-6 travel motor include:

  • Speed configuration: Hybrid two-speed design adaptable for single-speed applications
  • Mounting pattern: 14 bolt holes on both the frame interface and the sprocket connection
  • Value proposition: Lower costs compared to OEM dealer pricing while meeting equivalent performance benchmarks

Our Warranty and Return Policy

Every Komatsu final drive motor ships with our limited lifetime warranty covering workmanship and material defects, including full replacement during the initial year of service. Dissatisfied customers receive full refunds when returning unused motors within 30 days of delivery.

How Do I Install the Komatsu PC78MR-6 Final Drive Motor?

Installation procedures begin with hydraulic line disconnection and removal of existing track motor mounting fasteners. Then, position the Komatsu PC78MR-6 final drive motor carefully onto the machine frame. Some models can weigh up to 225 pounds, so appropriate lifting equipment or crew assistance may be needed for safe component handling throughout the swap. 

Get Your Komatsu PC78MR-6 Final Drive Motor Delivered Fast

Enjoy free shipping for deliveries throughout the continental United States, with most orders reaching destinations within three business days. Connect with the Precision Pros at 888-511-6332 for product consultation or place orders online today.

Real Value, Real Peace of Mind

Customers Experience Five Star Service

Just ordered a new drive motor from these guys and it came quickly and fit perfectly and was less expensive than a remanufactured motor. Would definitely buy again.

– Denny B.

These guys are extraordinary and I give them the highest rating for their integrity and commitment to service.

– Greg P.

I ended up buying from Precision Final Drives because the sales person was clearly very knowledgeable and well versed with the subject matter. He was polite, patient, and gave clear instructions.

– Paul M.

From our blog

10 Essential Tips for Maintaining Your Excavator

Maintaining your excavator prevents costly breakdowns and extends machine life. Follow these 10 essential tips to keep it running strong.

5 Essential Tips for Operating Construction Excavators

Operating construction excavators the right way prevents breakdowns and boosts productivity. Here are 5 essential tips every operator needs.

Excavator Final Drives Explained: The Hydraulic Power Behind Your Track

Final drives explained for excavator operators. Discover how they convert hydraulic energy to track movement and tips to avoid failures.