478-7051 Boom Cylinder Seal Kit for Caterpillar Mini Excavators 304E2 304.5E2

478-7051 Boom Cylinder Seal Kit – High-Quality Aftermarket Replacement for Caterpillar Mini Excavators

Restore smooth boom operation and stop hydraulic leaks with this premium aftermarket 478-7051 boom cylinder seal kit. Designed as a complete direct replacement for the boom cylinder on Caterpillar mini excavators, it includes all necessary seals, wear rings, and O-rings to prevent fluid loss, reduce contamination, and maintain reliable performance in tight spaces and light-to-medium duty digging applications.

Key Benefits for Contractors and Operators

• Stops Hydraulic Leaks: High-quality seals and wear rings effectively contain fluid and protect the cylinder from scoring.
• Direct Fit Installation: Complete kit matches OEM specifications for quick, hassle-free repair – minimize machine downtime.
• Built Tough for Heavy Duty Use: Durable materials resist high pressure, heat, and abrasive conditions on job sites.
• Cost-Effective Alternative: OEM-level performance at aftermarket pricing – ideal for routine maintenance and fleet repairs.
• Fast Shipping: In stock and ready to ship within 1-3 days.

Compatible Caterpillar Models

This boom cylinder seal kit is commonly used for models including (verify your machine’s parts manual for exact fit):

• Mini Excavators: 304E2 CR, 304E2, 304.5E2

Specifications

Questions? Contact us for fitment confirmation or bulk pricing. We stand behind our parts with fast shipping and easy returns.