Shark doesn’t sell a replacement. I designed one and put it up on eBay for $8 plus shipping. I send two pieces (since it’s easy to break it while installing) and a replacement spring, since those tend to go flying. People seem pretty happy with them. https://www.ebay.com/itm/124766956799 Makes me mad when companies don’t sell a replacement for small, easily breakable parts on relatively expensive items. Just adds to the landfills.