419-0070 Hydraulic Stick Cylinder Seal Kit for Caterpillar 330D L 336D

419-0070 Hydraulic Stick Cylinder Seal Kit – Premium Aftermarket Solution for Caterpillar Excavators

Restore precise arm control and entirely eliminate hydraulic fluid leaks with this professional-grade 419-0070 stick cylinder seal kit. Specifically engineered for Caterpillar’s legendary D and D2 series excavators, including the heavy-duty 330D L, 336D, and 340D models. The stick (arm) cylinder endures continuous high-stress pulling and trenching forces; manufactured by WINSCHEN utilizing premium elastomeric and polyurethane materials, these seals are built to withstand the harshest construction and mining site conditions.

Key Features and Selling Points

• Optimized Stick Performance: Precision-engineered U-cups and buffer seals prevent internal fluid bypass, ensuring your Cat excavator maintains consistent digging force and eliminates arm drift under maximum payloads.
• Direct OEM Compatibility: Guaranteed to seamlessly match Caterpillar factory specifications for the stick cylinder group across 330D, 336D, and 340D models, facilitating a precise and straightforward installation.
• Heavy-Duty Durability: Highly resistant to severe hydraulic pressure spikes, elevated operating temperatures, and environmental contaminants such as abrasive rock dust and moisture.
• Comprehensive Overhaul Kit: Includes all essential service parts marked ‘J’ on the factory diagram, featuring critical components like 259-0735, 259-0773, and 9X-3607 for a complete cylinder rebuild.
• Minimize Equipment Downtime: A dependable, cost-effective aftermarket alternative from WINSCHEN that reduces maintenance overhead while keeping your earthmoving machinery producing.

Compatible Equipment Models

Based on official catalog data, the 419-0070 seal kit services the stick cylinders of the following Caterpillar equipment:

• Caterpillar Excavators: 330D L, 336D, 336D2, 340D L, 340D2 L
• Application: Stick Cylinder (Arm Cylinder) Service

Specifications

Need to confirm compatibility for your specific Cat machine serial number? Our technical experts are ready to assist. We offer rapid global shipping to minimize your machine’s downtime.