Hitachi Engine Cushion Parts — Complete OEM Guide

Hitachi Engine Cushion Overview

Hitachi Construction Machinery produces some of the most widely used excavators in the US construction market, including the EX200, EX300, ZX200, ZX300, and ZX450 series. Each of these machines uses precisely engineered engine cushion mounts to isolate the diesel engine from the chassis frame, preventing vibration transmission to the operator cab and protecting hydraulic components from fatigue damage caused by engine vibration.

The most common Hitachi engine cushion replacement parts are 1524771 (front mount, EX200/ZX200 series), 6129902 (rear mount, EX200/ZX200), and 8A31-54-1110 (premium mount for ZX400 and larger). When both front and rear engine cushions are worn, they should be replaced as a set to restore the original isolation system balance.

Hitachi Excavator Engine Cushion Part Number Reference

The table below cross-references Hitachi engine cushion part numbers with the specific excavator models they are designed for:

How to Identify a Worn Hitachi Engine Cushion

Hitachi engine cushions degrade over time due to rubber ageing, oil contamination, and fatigue under dynamic loads. Signs that the engine cushion requires replacement include:

• Visible cracking or tearing of the rubber section — inspect by removing the engine guard and visually checking the mounts
• Permanent deflection (creep) greater than 3 mm — indicates rubber fatigue failure
• Rubber-to-metal separation — the most serious failure mode; the engine is no longer isolated from the frame
• Increased cab vibration at engine idle speed — a symptom of reduced isolation efficiency
• Hydraulic hose fatigue cracking near the engine — often caused by elevated vibration from failed mounts

Recommended replacement interval: 3,000–5,000 operating hours, or at each major engine service. Always replace front and rear mounts as a set to maintain symmetric isolation.

Ordering Hitachi Engine Cushions for US Delivery

We supply Hitachi engine cushion mounts to construction contractors, equipment dealers, and maintenance workshops across the United States and Canada. All orders include commercial invoice, packing list, and HS code 4016.99 classification for smooth US Customs clearance. Standard air freight delivery to the US East Coast and West Coast typically takes 5–7 business days from dispatch.

For urgent breakdowns, we offer priority manufacturing and express shipping for part numbers 1524771, 6129902, and 8A31-54-1110.