null
CALL or TEXT (800) 909-7060

Caterpillar Duo-Cone Final Drive Seal for D3-D8 Dozers & Track Loaders 6Y-0859

SKU:
6Y-0859
FitsModel:
D3, D3G, D3K, D4, D4G, D4H, D4K, D5, D5G, D5H, D5K, D5M, D5N, D6H, D6K, D6K2, D6M, D6N, D6T, D7C, D7H, D7R, D8N, 933C, 939C, 953D, 963D, 561M, 561N, 572R, 578, 583R, 583T, 587T, PL61
ListDescription:
Duo Cone Seal
Caterpillar Duo Cone Seal for D3, D4, D5, D6, D7, D8 Dozers & Track Loaders -- 6Y-0859
Part # 6Y-0859

Part # Part # 6Y-0859

Fits Models At A Glance:

Fits Models At A Glance:

  • Crawler Dozers: D3, D3G, D3K, D4, D4G, D4H, D4K, D5, D5G, D5H, D5K, D5M, D5N, D6H, D6K, D6K2, D6M, D6N, D6T, D7C, D7H, D7R, D8N
  • Crawler Loaders: 933C, 939C, 953D, 963D
  • Pipelayers: 561M, 561N, 572R, 578, 583R, 583T, 587T, PL61

Key Notes:

  • Part Numbers: 6Y-0859, 6Y0859
  • Weight: 4.50 lbs
  • Application: Final drive and roller duo-cone (floating) face seal that prevents oil leakage and keeps contaminants out
  • Inner Diameter: 256.68 mm
  • Interchange Numbers: 6Y0859
  • Condition: Aftermarket replacement part

Common Use Case or Symptoms:

Use when the final drive or roller is weeping oil or leaking past worn seals, which can lead to oil starvation and costly drive failure on the machine.

Why Choose Broken Tractor?

  • Precision Metal Face Sealing: Lapped metal faces and load rings hold a tight seal under heavy dozer loads
  • Broad D3-D8 Coverage: One seal supports an extensive range of dozers, loaders, and pipelayers
  • Fast Shipping from a U.S.-Based Team: In-stock and ready to ship from our U.S. warehouses
$79.00

Shipping calculated at checkout. If any item in your order is temporarily unavailable, we'll contact you to arrange a back-order or refund — whichever you prefer.

Can’t Find What You’re Looking For?

Our knowledgeable staff will be happy to help you with any of your tractor, backhoe, dozer, or engine parts needs.

1-800-909-7060 Parts Request Form

FEATURED PRODUCTS

Shipping & Return Policy

Do you need your part quickly? You're in luck! We have warehouses all over the country to ensure a quick and easy delivery time. Most of our parts ship from our warehouses the same day you place your order. And many times, orders are delivered in Two to Three days.

Our in house parts are manufactured following strict quality standards in our warehouse in Ohio. Parts such as hydraulic cylinders, pins, bushings, sheet metal, track adjusters, booms and dipper sticks are all ready to ship same day that they are purchased! With less time to wait for your shipment, you will be able to get back to work as quickly as possible.

Did you accidentally purchase the incorrect part? We offer returns and exchanges here at Broken Tractor. To proceed with a return, please call us toll free, and we will provide you with return authorization and a step by step return process for your convenience. We are more than happy to help you exchange your part for the correct one! Give us a call at 1-800-909-7060 and we would be pleased to help you.

Privacy Policy | Terms & Conditions

Building Quality Since 2006  |  Copyright © 2026 Broken Tractor LLC - All Rights Reserved


Product: Category: Brand: Head Title: Duo-Cone Final Drive Seal | Broken Tractor | 6Y-0859