GSC Power-Division ZERO-TICK lifters for the Mitsubishi 4G63. GSC's ZERO-TICK lifters utilize a stiffer spring inside to help keep the lifter at its operating height even when oil pressure is low. If your lifters are ticking, replace them with these. Ticking lifters need to be fixed, they totally throw off the cam profile and will guaranteed cause float and destroy parts. If there is valve float, the lifters will try to pump up to take up the slack during valve float, this will cause valves to hang open and potentially hit each other or pistons, OR just burn up exhaust valves.
 

• Lifters must be bled down before installation, see below
• Sold as a set of 16 

How to Bleed Your Zero-Tick Lifters