Depending on where the Rotax 912 engine was sourced from, there may be a different fitting on the oil pump of the engine.  All RV-12 aircraft with engines purchased from Vans have an AN fitting on the engine oil pump which interfaces with our hoses for the Thermostasis install kit.

For other aircraft, take a look at the oil pump on your engine.  If it has a Flare type AN fitting as pictured below, our hoses will work with it just fine.  

If there is a barbed fitting or other type of fitting that screws into the engine, you will need to order the Metric to AN adapter here to complete that portion of your package.

If you have any questions, please feel free to contact us.