Interim Tier IV Engines

To meet Interim Tier IV emissions, John Deere Power System engines above 75 hp will couple the Tier III PowerTech Plus engine platform with cooled exhaust gas recirculation (EGR) and exhaust filter technology.

• 4.5L, 6.8L, 9.0L and 13.5L in-line, four- and six-cylinder models with a four-valve cylinder head, high-pressure fuel system, turbocharging and air-to-air aftercooling system
• Exhaust filter consists of a diesel oxidation catalyst and diesel particulate filter
• Optimized package size similar to their Tier III counterparts