220-9104 K100 Weld-On Two-Strap Center Bucket Adapter

The 220-9104 K100 Weld-On Two-Strap Center Bucket Adapter is an aftermarket ground engaging tool designed for compatible excavator buckets using a CAT-style K Series tooth system.

Installed in the center position of the bucket cutting edge, the adapter provides the mounting interface between the bucket and a replaceable K100 tip. Its two-strap weld-on construction distributes digging loads across the base edge, while its lower-profile shape supports efficient bucket penetration.

The adapter is designed for a 44.5 mm base edge in the 45 mm thickness class with a 22.5-degree bevel. Official reference dimensions include an overall length of 384 mm, a bottom strap length of 238 mm and a width of 110 mm.

The center adapter has a 0-degree kickout angle and no mounting holes. It must be welded to the bucket according to a qualified welding procedure. The corresponding K100 tooth system commonly uses a vertical drive-through retainer such as reference 220-9090.

Typical applications include excavation, trenching, general earthmoving, quarry work, road construction and bucket rebuilding. Before ordering, buyers should verify the original part number, base-edge thickness, bevel angle, adapter position and installed tooth system.

This product is an aftermarket replacement manufactured by YASSIAN and is not a genuine Caterpillar part or affiliated with Caterpillar Inc.

Key Features

• Reference part number 220-9104

• CAT-style K Series interface

• K100 adapter size

• Center-position configuration

• Two-strap construction

• Weld-on installation

• Designed for a 44.5 mm base edge

• 45 mm base-edge thickness class

• 22.5° base-edge bevel

• 0° corner kickout

• No bolt holes

• Compatible with K100 bucket tips

• Supports vertical drive-through retention

• Suitable for excavator bucket rebuilding

Applications

Suitable for:

• General excavation

• Trenching

• Road construction

• Quarry operations

• Aggregate handling

• Compacted-soil excavation

• Mixed earth and rock

• Bucket manufacturing

• Bucket rebuilding

• K100 tooth-system replacement

Compatible Equipment References

Potential applications include selected excavator bucket configurations associated with:

• CAT 315 Series

• CAT 318 Series

• CAT 320 Series

• CAT 322 Series

• CAT 323 Series

• CAT 324 Series

• CAT 325 Series

• CAT 326 Series

• CAT 328 Series

• CAT 329 Series

• CAT 330 Series

• CAT 335 Series

• CAT 336 Series

• CAT 340 Series

Fitment Notice: Machine model alone does not guarantee fitment. Confirm the original adapter number, 44.5/45 mm base-edge thickness, 22.5° bevel and K100 tooth system before ordering.

Welding and Installation Notes

• Confirm that the required position is the bucket center.

• Verify the base-edge thickness and bevel angle.

• Remove paint, oil, rust and contamination from the welding area.

• Inspect the bucket edge for cracking or deformation.

• Position and align the adapter according to the bucket drawing.

• Use a qualified welding procedure for the adapter and base-edge materials.

• Follow the required preheating and controlled-cooling procedure.

• Avoid welding across critical stress areas.

• Inspect all welds after cooling.

• Confirm correct tip and retainer engagement before operation.