MRC:
The name and number of parts supplied with the item which may be required for application.AKYD
Accessory Components And Quantity:
Air cleaner 2, cooler, fresh water 1, cooler, lubricating oil 1, filter, fuel oil 1, filter, lubricating oil 2, governor 1, pan, oil 1, pump, fresh water 1, pump, fuel transfer 1, pump, sea water 1, tank, expansion, water 1
MRC:
A feature of the item of supply which must be specifically recorded when the reference number covers a range of items.ZZZY
Reference Number Differentiating Characteristics:
As differentiated by accessory components and quantity, starting method, and special features