Cylinder heads and cam
covers Crankshaft: crank pin diameter, connecting rod
big - end bearing size and crank counter-weight size are all reduced, to reduce reciprocating weight Crank main bearings and caps High - strength forged connecting rods Pistons and piston rings Titanium inlet and exhaust valves Intake manifold and throttle body Redesigned Variable Valve Timing - intelligent Electric motor (VVT -
iE) Revised Lexus D - 4S dual injection system Four - into - one exhaust headers and heat insulators Oil pan and baffle plate Alternator clutch system Engine and transmission oil coolers Spark plugs