The Onan P220-11128 & P220-10935 are sold out, but we have a retrofit kit to replace this engine with a 20 HP Kohler Command
engine. The CH20 engine was designed to replace the Onan P & B Series
engines and includes the front stub shaft and a new muffler. The retro kits include necessary wiring, spacers and everything else required to make the exchange.
The kits include a detailed installation guide and we have been told by our
customers that installation takes an average of 6 hours to finish. This engine is
a Kohler factory spec made for the John Deere 318 & 420 tractors and is sold with a 2 year factory warranty.
** The 318 kit also works well for the 316 tractors