Over the years Perkins has produced hundreds of different engines and each can have many different variants. So how do you know the exact specification of your engine?
All the information you need about your engine is included in the serial number on your engine plate, which you can use to find the parts to fit on your engine. The position of the engine plate varies across different engine series. To find the location of the plate and understand the information on it, see the chart below.
More information at: https://shop.perkins.com/support/identify-your-engine