REQUIRED For Replacement labeled Engines, Long Blocks, and short blocks sold within the U.S. and U.S. Territories the engine core (i.e. old engine) that is removed MUST be returned to your selling Caterpillar dealer, so that they can return to Caterpillar OR destroy, as required by law. Proof of return or destruction will then be provided to the EPA and or California ARB if required. See PELJ1301 for additional details. The Primary Engine Arrangement defines the structured layout that brings together the main engine systems into a unified working setup. It coordinates how internal engine elements interact during power generation and operational cycles. The arrangement ensures that motion, timing, and energy flow occur in an orderly sequence during engine operation. It aligns internal functions, allowing the engine to respond smoothly to load changes and speed demands.Attributes:• Assists in predictable power output during operation cycles.• Facilitates orderly power delivery through a structured arrangement.• Provides 168 kilowatt (225.3 brake horsepower) at 2200 revolutions per minute.Applications: The Primary Engine Arrangement is used within the engine system, where it defines how core engine functions interact and operate together during power generation and engine control.