The Steering Rod Swivels Assembly Kit seals your steering control rods from your engine compartment, reducing the risk of fumes in the cockpit. If you want easy sliding of your control rods and don’t want any binding and scraping then this one’s for you. No riveting required if installed during your aircraft’s initial assembly of firewall but all the fasteners are there for those of you that have already gone past that stage. This kit works on all of the the Zenith 750 range.