GM ACTIVE FUEL MANAGEMENT VALVE LIFTER AND GUIDE KIT TO SUIT HOLDEN CALAIS VZ VE VF L76 L77 6.0L V8This active fuel management (AFM) valve lifter kit is designed to conserve fuel during driving situations that require low power demands. Valve lifter guides in this kit accommodate lifters from turning on the lobe of your camshaft. Being a genuine GM component, this lifter kit provides the same performance, durability and service life. This AFM valve lifters and guides kit suits Holden Commodores and similar platforms fitted with L76 and L77 V8