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JD 4020 diesel block heater options
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scott 730
Posted 6/27/2026 23:17 (#11686493 - in reply to #11686472)
Subject: RE: JD 4020 diesel block heater options


ec mn
mschultz - 6/27/2026 22:40

Drawing from the radiator drain seems inefficient. If you can't remove the port you want, remove everything and use a frost plug heater.

Example:

https://www.reliableaftermarketparts.com/products/frost-plug-heater-...


OP never stated what year 4020 he has. Only 71/72 4020's have a welch plug in the block.

Edited by scott 730 6/27/2026 23:20
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