Dayton
Dayton pinion 28804.00 for 4Z328
A new Dayton pinion designed to fit item 4Z328 for compatible air compressor and vacuum pump maintenance
- Direct replacement for 4Z328 air compressor
- Genuine Dayton pinion ensures exact fit
- Manufacturer-direct supply chain
- Ready for immediate installation
- Compatible with Dayton 4Z328 units
Compatible Pinion for 4Z328
This Dayton pinion, model 28804.00, is designed specifically for use with Grainger item number 4Z328. It serves as a direct replacement component for compatible Dayton air compressors and vacuum pumps. Maintenance technicians and repair shops use it to restore proper gear engagement in these units.
Fits Only Listed Equipment
The pinion functions exclusively with the specified 4Z328 assembly and matching Dayton models. It cannot adapt to other brands, different Grainger numbers or unrelated compressor frames. Verifying the exact item number before ordering prevents mismatched parts and downtime.
Simple Press Fit Installation
Installation typically involves pressing the pinion onto the motor or pump shaft and securing it with the original fastener. The most common issue is discovering shaft wear or keyway damage only after the old gear is removed. Clean the shaft thoroughly and inspect for scoring before fitting the new pinion.
Highlights
- Direct replacement for 4Z328 air compressor
- Genuine Dayton pinion ensures exact fit
- Manufacturer-direct supply chain
- Ready for immediate installation
- Compatible with Dayton 4Z328 units
Specifications
| Brand | DAYTON |
|---|
Questions about this item
Should I order the pinion marked 28804.00 for my 4Z328 compressor?
Yes, the 28804.00 pinion is specified for use with the 4Z328 compressor.
What does the 4Z328 reference mean for fitment?
The 4Z328 is the Grainger item number that this pinion is designed to fit.
Are there any shipping restrictions that affect this part?
The supplier notes no state restrictions on sale for this pinion.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.



