English 
Parts list
|
Number |
Name |
Qty |
|
721-98-04150 |
Seal Kit, Sttering Cylinder |
|
|
07000-12110 |
• O-ring |
2 |
|
07000-B5100 |
• O-ring |
1 |
|
07000-B5150 |
• O-ring |
1 |
|
07000-F3035 |
• O-ring |
2 |
|
421-09-11320 |
• Seal, Dust |
2 |
|
707-35-31000 |
• Ring, Back-up |
2 |
|
707-35-31510 |
• Ring, Back-up |
1 |
|
707-39-16120 |
• Ring, Wear |
2 |
|
707-44-16120 |
• Ring, Piston |
1 |
|
707-51-10650 |
• Ring, Buffer |
1 |
|
707-51-10860 |
• Packing, Rod |
1 |
|
707-56-10740 |
• Seal, Dust |
1 |
|
721-98-04130 |
Seal Kit, Boom Cylinder |
|
|
07000-B5160 |
• O-ring |
1 |
|
07000-B5250 |
• O-ring |
1 |
|
427-09-11120 |
• Seal |
4 |
|
707-35-31600 |
• Ring, Back-up |
2 |
|
707-35-32520 |
• Back-Up Ring |
1 |
|
707-39-26020 |
• Ring, Wear |
2 |
|
707-44-26150 |
• Ring, Piston |
1 |
|
707-51-16650 |
• Ring, Buffer |
1 |
|
707-51-16860 |
• Packing, Rod |
1 |
|
707-56-16740 |
• Seal, Dust |
1 |
|
721-98-04140 |
Seal Kit, Bucket Cylinder |
|
|
07000-B5180 |
• O-ring |
1 |
|
07000-B5300 |
• O-ring |
1 |
|
427-09-11120 |
• Seal |
4 |
|
707-35-31800 |
• Back-Up Ring |
2 |
|
707-35-33000 |
• Back-Up Ring |
1 |
|
707-39-30900 |
• Ring, Wear |
2 |
|
707-44-30150 |
• Ring, Piston |
1 |
|
707-51-18650 |
• Ring, Buffer |
1 |
|
707-51-18890 |
• Packing, Rod |
1 |
|
707-56-18740 |
• Seal, Dust |
1 |
Toparts 721-98-04140 Hydraulic Cylinder Seal Kit for Komatsu WA900-8
Ensure the uninterrupted power and peak efficiency of your heavy-duty fleet with the Toparts 721-98-04140 Hydraulic Cylinder Seal Kit. Precision-engineered specifically for the Komatsu WA900-8 Wheel Loader, this service and repair kit is built to withstand the punishing demands of mining, quarrying, and large-scale earthmoving operations.
Engineered for Mining-Scale Reliability
The Komatsu WA900-8 is a powerhouse that operates in some of the world's harshest environments. Whether it is the Bucket Cylinder or Lift Cylinder, the hydraulic system must handle immense breakout forces and high-pressure cycles. Toparts has developed the 721-98-04140 seal kit as a premium, direct aftermarket replacement to ensure your loader maintains its factory-standard lifting and digging performance without the risk of hydraulic drift.
Key Features and Benefits:
Direct OEM Replacement: Fully compatible with Komatsu OEM part number 721-98-04140, ensuring a perfect, leak-free fit and seamless installation.
High-Performance Material Grade: Manufactured using advanced Polyurethane (PU) for superior abrasion resistance and high-grade NBR/PTFE for heat and chemical stability.
Extreme Pressure Resistance: These seals are designed to remain resilient under the massive pressure spikes typical of 24/7 mining and loading applications.
Superior Contamination Control: Includes heavy-duty wiper seals that effectively scrape away grit, mud, and dust, protecting the internal cylinder rod and bore from expensive scoring.
Eliminates System Drift: Precision-engineered piston and rod seals prevent internal fluid bypass, ensuring that your bucket and lift arms stay exactly where the operator positions them.
Extended Service Life: By using Toparts' high-durability seals, you can extend the intervals between repairs, significantly reducing your total cost of ownership (TCO).
Product Specifications:
Feature:Details
Part Number:721-98-04140
Compatible Machine:Komatsu WA900-8 Wheel Loader
Application:Hydraulic Cylinder Service & Overhaul
Material Composition:Premium PU, NBR, PTFE, and Reinforced Nylon
Operating Temp:Optimized for extreme heat and heavy-duty cycling
Manufacturer:Toparts
Why Choose Toparts?
At Toparts, we specialize in high-performance sealing solutions for the global construction and mining industries. Our 721-98-04140 seal kit provides an industry-leading balance of OEM-quality performance and aftermarket value, ensuring your Komatsu equipment stays on the job and out of the shop.
Would you like me to check the availability of the matching Tilt Cylinder or Steering Cylinder seal kits for your WA900-8 loader?
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