Just purchased a new Grand Rapids EIS Model 4000 for a Rotax 912S for my 701.

When I orderd it they asked what type of oil sender was in my Rotax. As I havent bought my motor yet, I called Rotax and they told me the Honeywell sender comes standard.

After a 3 month wait I recieved the unit and it came with a VDO oil sending unit.When I called the suplier where I bought it they told me the EIS will not support the Honeywell sending unit, and the reason they asked which unit came with the engine is so if its not a VDO they will include it with the order.

It seems crazy to remove the more expensive unit and replace it.

Does this sound right?

Any input would be great.


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Rodney, you may want to contact Bob McDonald on this site. Bob has experience with this VDO unit for the rotax.


Not crazy... my Honeywell packed it in after 3 months... the replacement did not last any better. Installed the $40 VDO sender and no problems. Honeywell sender is $400. Install the VDO unit its better built and more reliable. Price is seldom an indicator or quality.
Thanks, just wanted to make sure. I will keep the unit and change out the Honeywell when I get closer and buy my engine.


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