Tappet adjustment Screws x 24 for Mitsubishi FTO GPX GPvR 2.0 V6 Mivec engined models Do the Job Properly and Buy the whole 24 These can be a problem as the the plastic part goes brittle over time. Never figured if this is just aging, the plastic not being up to the job or the use of poor quality oil. But the plastic drops away and leaves the stainless steel end sitting between the screw and top of valve and under hard acceleration they can jump out. They 'usually' end up in the sump but the engine will now tap badly as the gap is now several mm and not nought point something ! Adjust to 0.1mm Inlet 0.13mm Exhaust Exploded Diagram HERE & Adjusting Instructions HERE Mitsubishi Part Numbers MD212099 Tappet Screw SPECIAL ORDER FROM JAPAN APPROX 3 WEEKS