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News Releases

2012 News Releases and Information

John Deere Power Systems Announces Naming Convention, Power Ratings for Final Tier 4/Stage IV Engines

WATERLOO, Iowa (April 17, 2012) — John Deere Power Systems (JDPS) has announced the naming convention and power ratings for its complete Final Tier 4/Stage IV mobile   off-highway diesel engine lineup.


Building on previous tier nomenclature, John Deere Final Tier 4/Stage IV engine names will start with the PowerTech™ brand and add a three-letter suffix that specifies the engine's technology package. For Final Tier 4/Stage IV, the three letters will identify the engine's technology platform, turbocharger and aftertreatment, respectively. An example of a John Deere Final Tier 4/Stage IV engine name is PowerTech PSS 6.8L.


All John Deere Final Tier 4/Stage IV engines with power ratings 56 kW (75 hp) and above are designated "P" indicating the Tier 3/Stage III A PowerTech Plus technology platform that features 4-valve cylinder heads, cooled exhaust gas recirculation, full-authority electronic controls, high-pressure fuel systems and air-to-air aftercooling. These engines utilize a variable geometry turbocharger (designated "V"), series turbochargers ("S") or a wastegate turbocharger ("W"). Aftertreatment technology for engines 56 kW (75) hp and above includes an exhaust filter and selective catalytic reduction — a combination that is designated "S."


John Deere engines with power ratings below 56 kW (75 hp) are designated "E" to indicate the PowerTech E technology platform that includes 2-valve cylinder heads, full-authority electronic controls, high-pressure common-rail fuel system and air-to-air aftercooling. These engines utilize a wastegate turbocharger (designated "W") and an exhaust filter ("X").


"Our Final Tier 4/Stage IV naming convention provides customers with simple, familiar identification of our engine models," said Doug Laudick, manager of product planning at John Deere Power Systems.


Models and power ratings for the complete John Deere Final Tier 4/Stage IV engine lineup include:

  • PowerTech EWX 2.9L: 37 kW – 55 kW (50 hp – 74 hp)
  • PowerTech EWX 4.5L: 55 kW (74 hp)
  • PowerTech PWS 4.5L: 63 kW – 104 kW (85 hp – 140 hp)
  • PowerTech PSS 4.5L: 93 kW – 129 kW (125 hp – 173 hp)
  • PowerTech PVS 6.8L: 104 kW – 187 kW (140 hp – 250 hp)
  • PowerTech PSS 6.8L: 168 kW – 224 kW (225 hp – 300 hp)
  • PowerTech PSS 9.0L: 187 kW – 317 kW (250 hp – 425 hp)
  • PowerTech PSS 13.5L: 298 kW – 448 kW (400 hp – 600 hp)


Deere & Company (NYSE: DE) is a world leader in providing advanced products and services and is committed to the success of customers whose work is linked to the land — those who cultivate, harvest, transform, enrich and build upon the land to meet the world's dramatically increasing need for food, fuel, shelter and infrastructure. Since 1837, John Deere has delivered innovative products of superior quality built on a tradition of integrity. John Deere Power Systems manufactures and markets 30 kW to 448 kW (40 hp to 600 hp) industrial diesel engines and 56 kW to 559 kW (75 hp to 750 hp) marine diesel engines, as well as drivetrain components for use in a variety of off-highway applications. For more information, visit John Deere Power Systems at www.JohnDeere.com/jdpower.

Editorial Contacts:
Nathan L. Huss
+1 515 557 2031
Fax: +1 515 557 2001

Tom Withers
+1 319 292 4617
Fax: +1 319 292 5075