cylinder block & crankcase compacted vermicular graphite cast iron (GJV/CGI), 62 kilograms ; UV laser-honed exposed bore; cast reinforcing bed-plate lower frame incorporating five main bearings (each 'bearing' affixed by four bolts), die-forged chrome molybdenum alloy steel crossplane crankshaft with first and second order forces and moments avoided, three-part oil sump consisting of cast alloy upper section, a middle baffle section and pressed steel lower section, diagonally fracture-split connecting rods, cast aluminium alloy Kolbenschmidt pistons (Mahle on CCFA), simplex roller chain-driven ancillaries, oil filter module (incorporating oil separator and water-to-oil cooler) mounted within the 'vee' (externally mounted on Marine variants)