Identifying John Deere PowerTech Engines

Not many Powertech engine parts are interchangeable with the older John Deere engines. So it is vital to distinguish the PowerTech series of John Deere diesel engines from the John Deere 300 series engines to ensure you order the correct parts.

The John Deere PowerTech engines share the same model designations as the 300 series but have different component parts that are not all interchangeable.

There are a number of pointers to help identify whether you have a Powertech or Liter designated 300 series engines:

  • The easiest way to identify your engine is to look on the valve cover for a “PowerTech.” sticker. if you are lucky it is still intact and legible.

  • The Engine Serial Number tag

The engine serial number can be either a one-line, or a two-line style. On either style if the number ends with a 150 or higher it is a “Powertech” engine. 

  • The front engine mounts have an “L” shape bolt pattern for 3 mounting capscrews. The mounts will be facing outward on both sides of the engine.
  • The water pump is mounted on the right side in a low position integrated into the front cover.
  • The nose of the crankshaft has four bolts for the crankshaft pulley.
  • If the valve cover bolt holes run around the perimeter of the cover it is a Series 300 engine, if they run down the middle, it is a PowerTech engine.
  • The fuel lift pump (fuel transfer pump) is located toward the rear of the engine instead of toward the front.  The “front ” is the fan end regardless of which way it faces in the equipment its mounted in. On the 300 series engine the pump is located toward the front of the engine.

Location on the fuel pump on Powertech engines

Despite a similar appearance of the Powertech and 300 series engines, many of the component parts are not interchangeable have been changed extensively including:

    • Block
    • Cylinder head
    • Front cover
    • Crankshaft
    • Crankshaft bearings and thrust bearings
    • Connecting rods and bearings
    • Camshaft
    • Balancer shafts
    • Pistons and liners
    • Flywheels
    • Valve covers
    • Thermostat housings
    • oil pump,
    • oil filters and housings
    • Lift pumps
    • Fuel injection pumps
    • Water pumps
    • Fan & water pump drive systems

    300 Series: Naturally Aspirated & Turbo Engines

    3 Cyl. Models: 3152, 3164, 3179, 3029
    4 Cyl. Models: 4202, 4219, 4239, 4276, 4039, 4045
    6 Cyl. Models: 6303, 6329, 6359, 6414, 6059, 6068

    350 Series: Naturally Aspirated, Turbo & Aftercooled Engines

    3 Cyl. Models: 3029 (2.9L) Powertech

    4 Cyl. Models: 4045 (4.5L) Powertech
    6 Cyl. Models: 6068 (6.8L) Powertech

    400 Series: Naturally Aspirated, Turbo & Aftercooled Engines.

    4 Cyl. Models: 4270
    6 Cyl. Models: 6404, 6466, 6076

    450 Series: Naturally Aspirated, Turbo & Aftercooled Engines.

    6 Cyl. Models: 6081, (8.1L) Powertech

    500 Series: Naturally Aspirated, Turbo & Aftercooled Engines.

    6 Cyl. Models: 6531, 6619

    550 Series: Naturally Aspirated, Turbo & Aftercooled Engines.

    6 Cyl. Models: 6105 (10.5L) Powertech

    650 Series: Naturally Aspirated, Turbo & Aftercooled Engines.

    6 Cyl. Models: 6125 (12.5L) Powertech

    Licence Terms

    You are free to: Share, copy & redistribute the material in original format for any purpose as long as you follow the license terms below:

    • Attribution – you must give appropriate credit and provide a link to the original article in a reasonable and visible manner
    • You may not in any way suggest that the licensor endorses you or your use.
    • No Derivatives – The material must be distributed in full, including disclaimer, you may not distribute or share modified material.
    • No additional restrictions – You may not apply legal terms that legally restrict others from doing anything the licence permits.
    • No warranties are given. The license may not give you all of the permissions necessary for you intended use. For example other rights such as publicity, privacy, or moral rights may limit how you use the material.


    Anglo Agriparts nor any such reviewers or contributors of content provides any warranty or guarantee as to the accuracy of any information on this website and cannot accept liability for any errors or omissions. The information in this article are for general information purposes only. It does not constitute legal, technical and/or commercial advice and should not be relied upon as such. Specific advice should always be sought separately. Despite the authors best efforts the information provided in this article may not be accurate, up to date or applicable to the circumstances of any particular case. Anglo Agriparts nor the author of this article make no representations or warranties of any kind regarding the completeness or accuracy of the information contained herein and accepts no liability for loss or damage whatsoever and howsoever arising from reliance on it, regardless of whether such information originates from Anglo Agriparts, or our contributors. Anglo Agriparts has no control over the content on any other website accessed through this website and accepts no liability for any loss or damage whatsoever and howsoever arising from reliance upon the content of such websites. Neither Anglo Agriparts nor any reviewer or contributor of content on the website shall be liable to any person for any loss or damage which may arise from the use of the information contained in this article or on this website. These exclusions of liability will not apply to damages arising from death or personal injury caused by the negligence of Anglo Agriparts or any of its employees or agents or of a reviewer or contributor of content.

    • Identifying John Deere PowerTech Engines


    More text, called 'top text', blahblah

    * E-Mail:

    First Name:

    Last Name:




    Post Code:


    Region / State:

    The product is currently Out-of-Stock. Enter your email address below and we will notify you as soon as the product is available.