Cat 303.5/304 Mini Excavator Bucket Ears & Pins
$147.77 on Amazon.com (as of October 17, 2026, 9:39 AM EST) View details ↗
Upgrade your Cat 303.5 or 304 mini excavator with these heavy-duty weld-on bucket ears and matching 40mm pins. Designed to replace worn, elongated, or damaged bucket ears, these high-quality steel attachments restore a tight pin fit, reducing excessive play between the bucket and stick for improved performance and longevity.
The package includes one pair of bucket ears and two 40mm pins with retaining hardware, ensuring a secure connection for custom buckets, repairs, or attachment conversions. The ears feature heat-treated surfaces for enhanced wear resistance at the pin contact points, making them ideal for demanding applications like grapples, rippers, or thumbs. Perfect for fabricating custom excavator attachments or restoring damaged components to factory specifications.
Before purchasing, verify your existing bucket ears and pin size (40mm diameter) and center-to-center distance (7-13/16″ or 200mm) to guarantee a perfect fit. These durable steel parts are built to withstand heavy-duty use, ensuring reliable performance on your mini excavator.
| Pin Diameter | 40mm (1.57″) |
|---|---|
| Pin Center-to-Center Distance | 7-13/16″ |
| Material | Heavy-Duty Steel |
| Heat Treatment | Wear-Resistant Contact Surfaces |
| Included Components | 1 Pair Bucket Ears + 2 Pins + Retaining Hardware |
| Fit For | Cat 303.5 & 304 Mini Excavators |






