Marine Engine Naming Guide

Understand the liters, cylinders, and other characteristics of your engine just by looking at its identification plate.

A John Deere marine engine model designated as 6135SFM85 is a 6-cylinder, 13.5-liter turbocharged and aftercooled, air-to-seawater engine that is emissions regulated.

Model Designation Key

First digit, number of cylinders; Next three digits, displacement in liters; Final character, indicates air intake system

Marine Engine Identification Plate

Diagram of Marine Engine Identification Plate