... water pump C15, C18 Connecting Rod AssemblyConnecting rod cap uses four bolts C15, C18 Cat Brake Installation64 1 3 527Tightening Sequence C15, C18 Head bolt torque sequence C15, C18 ... FunctionBoostElevated BMEPImproved ResponseRPM How are the C15 and C18 Affected?ã C15 and C18 ACERT are based off the C-15 platformã C15 displacement changes from 14.6 to 15.2 ltr.ãBore remains ... ACERT C15 / C18 Fuel EfficiencyEPA Engine Hp RPM BSFC % ChangeTier 3 C18 630 1800 219 4.8%Tier 3 C18 630 2100 228 9.1%Tier 2 C-16 630 2100 209Tier 3 C15 540 1800 217 4.0%Tier 3 C15 540...