John Deere

   / John Deere #11  
Last edited:
   / John Deere #12  
It’s a John Deere engine forty thirty nine
4039=4 cylinder engine manufactured in Dubuque, Mannheim or Saran factory. One should be able to remove a hex plug on LH(drivers side) & install a block heater part #DZ102076 similar to photo below.
 

Attachments

  • Screenshot 2025-10-29 053046.png
    Screenshot 2025-10-29 053046.png
    52.4 KB · Views: 3
   / John Deere #13  
Might be a matter of finding the right pipe plug to get an external water heater plumbed in to circulate cooling fluid.

Here is a schematic that shows such a plug (key #28) in the block linked to the JD parts site.


Another thought is to maybe contact this fellow who put a video up on his rebuild of a 4039 engine.


Or
4039 series engine & 3043 tractors do not share the same engine family but from viewing the last photo you posted the engine coolant heaters are located in similar locations. Model 3043D utilizes 1.6L Yanmar engine
 
Last edited:
   / John Deere
  • Thread Starter
#14  
4039 series engine & 3043 tractors do not share the same engine family but from viewing the last photo you posted the engine coolant heaters are located in similar locations. Model 3043D utilizes 1.6L Yanmar engine

Thanks
 

Tractor & Equipment Auctions

2005 GMC Sierra Pickup Truck, VIN # 2GTEK13T851399344 (A54865)
2005 GMC Sierra...
378721 (A54865)
378721 (A54865)
2022 HICKS  END DUMP SL3932 (A55745)
2022 HICKS END...
J and L Cargo Express Shadowmaster Enclosed Trailer (A55315)
J and L Cargo...
Tortoise Statue (A55853)
Tortoise Statue...
MISC TOOLS (A55745)
MISC TOOLS (A55745)
 
Top