Product News: Caterpillar 158-4765 Bottom Roller Assembly – Reliable Undercarriage Solution for CAT Mini Excavators

We are pleased to launch the 158-4765 bottom roller assembly, a high-quality aftermarket replacement designed for a wide range of Caterpillar mini excavators. Engineered to OEM-equivalent standards, this roller delivers stable load bearing, precise track guidance, and long service life to minimize downtime and maintenance costs for your equipment.

Key Compatible Models

This bottom roller directly fits the following machines:

• Caterpillar: 304, 304.5, 305.5, 304CR, 305CR, 306
• Mitsubishi: MM45

Cross Reference Part Numbers

Replaces OEM part numbers:

• 158-4765
• 340-8957
• 333-5606

Installation & Quantity Guide

• CAT 304CR: 8 rollers per machine
• CAT 304.5 / 305CR: 10 rollers per machine
• Mounting Note: 10mm installation bolts are not included; please prepare separately or reuse original hardware.

Product Features & Quality

• Precision-engineered to match original factory specifications for perfect fit.
• Heavy-duty structure supports full machine weight and ensures stable track alignment.
• Premium sealing system blocks dust, mud, and debris for reliable long-term operation.
• Guaranteed fit for listed models with no known incompatible alternatives.

Why Choose Our 158-4765 Bottom Roller

• Direct replacement for CAT OEM parts, no modification required.
• Robust construction withstands tough job-site conditions.
• Stable performance reduces abnormal track wear and extends undercarriage life.
• Ideal for fleet maintenance, repair shops, and equipment rental businesses.

Keep your CAT mini excavator running at peak efficiency with our dependable 158-4765 bottom roller. Contact our sales team to confirm compatibility, check inventory, or place your order today.