Engine components — component groups

Cam Followers (Fuel/Exhaust) high Cam Timing & Phase high Camshaft critical Camshaft Bearings critical Camshaft Drive (Chain/Gear) critical Chain Tightener high Decompression Mechanism medium

Accumulator / Pressure Rail high ELFI (Electronic Fuel Injection) critical ELVA (Electronic Exhaust Valve Actuation) critical Exhaust Valve Actuator (Hydraulic) critical FIVA Valve (Fuel Injection & Exhaust Actuator) critical HCU — Hydraulic Cylinder Unit critical High-Pressure Hydraulic Pipes critical Hydraulic Cylinder Unit (HCU) critical Hydraulic Oil System critical Hydraulic Power Supply (HPS) critical Hydraulic Power Supply Unit (HPS) critical Servo Oil System high