Fuel pressure regulator - $400 from Rotax or $22 online

I just tested a fuel pressure regulator said to be identical to the Bosch, although the ad called it an aftermarket replacement in one section, another section of the ad listed it as a Bosch along with the part number.

The regulator does not have any manufacturing markings, but it did fit.  However, the function was far from the Bosch specification of 3.0 bar.

The best fuel pressure I could get was between 38 and 39 psi.  Obviously not a drop in replacement. 

I haven't tested the actual Bosch (automotive) model.

Rotax Wizard wrote:

The same part number from Rotax has been used for more than 10 years.  Insisting it is the same even without matching numbers on the parts is your issue, not mine.  I don't believe they are.  

If you are flying an experimental great, use it.  i am perplexed at why you got a Rotax and want to use nothing from Rotax if you can avoid it.  

Without "capitalism" there would be no new engines.  

Of course this is my opinion, as you have yours. 

Cheers

That's a stretch to say I "want to use nothing from Rotax." Everything I've used up to this point is a Rotax part. I'm just not interested in being charged $400 for a $20 part. Would you not mind paying $100,000 for a $20,000 car? 

I just tested the Bosch automotive fuel pressure regulator.  The fuel pressure is identical to the original Rotax supplied regulator.