Komatsu Part CUSHION 20Y-54-65821

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Product Overview

The 20Y-54-65821 CUSHION is a genuine Komatsu OEM replacement cushion. Cushions are elastomeric components that absorb vibration, dampen noise, and prevent metal-to-metal contact between parts in your machine's cab, engine mounting, and structural assemblies.

Part Number: 20Y-54-65821 Part Name: CUSHION Part Type: OEM Komatsu Replacement Component Availability: In stock — ready to ship

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Function and Importance

Cushions work by compressing and rebounding as the machine vibrates during operation. They isolate the operator from engine vibration and travel shocks, protect sensitive components from fatigue damage, and prevent rattling and noise at panel interfaces. Over time, the rubber compound hardens from UV exposure, ozone, and temperature cycling. A hardened cushion transmits much more vibration, reducing operator comfort and increasing stress on the mounted component.

When a cushion fails completely, the mounted component can shift out of position, causing misalignment, hose chafing, or bolt loosening.

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When to Replace

• The cushion material is cracked, hardened, or has taken a permanent compression set
• Excessive vibration transmitted through the mounting point
• The cushion has collapsed or separated from its mounting plate
• Metal inserts visible through cracked rubber
• The component is disassembled — inspect and replace worn cushions

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Installation

1. Confirm 20Y-54-65821 in your Komatsu parts catalog
2. Support the component that the cushion mounts
3. Remove the old cushion — clean the mounting surfaces of rust and debris
4. Install the new cushion in the correct orientation
5. Tighten the mounting fasteners to specification — over-compression damages the cushion
6. Lower the component and verify even contact with the cushion

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Request a Quote

Need the Komatsu 20Y-54-65821 CUSHION? Contact us through the form or by phone, email, or WhatsApp. We respond to all inquiries within one business day.