CAT 988K XE CYLINDER AS 4216439 | Caterpillar 421-6439 | Mining

Title
Caterpillar 421-6439 Cylinder As | Fits 988K XE, 988K, 988 XE, 988 Excavators

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Opening Paragraph
The Caterpillar 421-6439 Cylinder As is a precision-engineered OEM replacement component designed for 988K XE, 988K, 988 XE, and 988 excavators operating in Wheel-type Loader and heavy construction environments. Built for structural durability and exact fitment, this cylinder as supports critical assemblies to ensure reliable performance and reduced downtime.

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Common Applications
This Caterpillar 421-6439 cylinder as is essential for:
Professional maintenance of CAT excavators.
Direct replacement of worn structural and pivot components.
Heavy-duty Wheel-type Loader and earthmoving operations.
Maintaining proper alignment in equipment linkage systems.

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Fits The Following Models
CAT 988K XE Excavator
CAT 988K Excavator
CAT 988 XE Excavator
CAT 988 Excavator
(Verify fitment with your specific serial number.)

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OEM Reference
Part Number: 421-6439
Brand: Caterpillar
Category: Wheel-type Loader
Machine Type: Hydraulic Excavator
Condition: OEM / Genuine-Style Replacement

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Product Details and Availability
In Stock (if confirmed).
Global Shipping Available.
Serial Number Verification Support.
Request Fast Quote for Current Market Pricing.

Access full technical specifications and availability here:
https://allparts.expert/parts/mining/cat-988k-xe-cylinder-as-4216439-caterpillar-421-6439-mining/