Rotax 912ul (80 hp), 912uls (100hp), 914(115 hp turbo) are common engines in ultralight aircrafts. Spare parts are relatively expensive, and as life goes on, I decided to list alternative sources with what I believe are the same spare part as used by genuine Rotax.
1. Rotax Radiator cap with gasket 1,2 Bar Rotax 912/914 p/n 922072
Alternative product: Radiator cap BMW P/N 17112345074
2. Electric fuel pump rotax 914, 1.0 bar p/n 996738:
Identical product: PIERBURG 7.21440.78.0
3. Electirc fuel pump rotax 912, 0,15 bar:
PIERBURG 7.21440.53.0
4. Hydraulic valve lifters p/n 881832:
Identical product: Ford Melling JB-900 Engine Valve Lifter
5. Ignition modules p/n 965359, 965446, 966724, 965440, 966728, 965442, 966729, 965444.
Alternative product: Ignitech Ignition unit for Rotax 912 and 914
6. Carburetor Floats.
Alternative product. Initial weigh is more than original Rotax, but after 6 month in E10 fuel, no sign of weight gain and less than 3.5g each:
Ali Express Carburetor Float for Bing 64 32 54 Rotax engines 861189 Rotax 912 – 914 Engines 912ULS 912UL 914UL
Documentation:
Latest documentation will easilly be found at www.rotax-owners.com for free. Unfortunately, some information found in older catalogs are removed from the newer ones, such as what torque should be used on some bolts. For reference, here’s a copy of 2013 Rotax 912/914 illustrated parts catalog.