Find great deals on eBay for aggregate washer. Shop with confidence. Skip to main content. eBay Logo: ... Save aggregate washer to get e-mail alerts and updates on your eBay Feed. + Items in search results. Greystone 36 x 18 Coarse Aggregate Washer with Motor. Pre-Owned. $9,500.00. or Best Offer. Freight. Results matching fewer words.