The Collet is the most widely applied product in the KAF400-EEF MULE610 2014 USA / 4X4 XC Valve(s)/Camshaft(s) ( four times ).
Some items from this specific schematic: Spring-engine Valve, Valve-exhaust, Guide,rod-push, Retainer-valve Spring.
The lowest price component in this Valve(s)/camshaft(s) parts-list fiche is the Collet.