Komatsu Part HOSE 421-03-41330

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Product Overview

The 421-03-41330 HOSE is a genuine Komatsu OEM replacement hose from the 421 prefix series.

Part Number: 421-03-41330 Part Name: HOSE Part Type: OEM Komatsu Replacement Hose Availability: In stock

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When to Replace

• Outer cover cracked, bulging, or worn through — the reinforcement is exposed
• Leaks at either fitting end or through the hose body
• Soft, spongy areas indicating internal ply separation
• Kinked, crushed, or cut sections
• Service interval reached

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Installation

1. Confirm 421-03-41330 in your Komatsu catalog
2. Route without sharp bends — stay above the minimum bend radius
3. Allow slack for movement and thermal expansion
4. Secure with clamps at specified intervals
5. Tighten fittings to torque
6. Pressure test through full operating cycles

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Request a Quote

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