I'm going to replace my pressure regulator on my Regina-equipped '90 740. The Regina FPR is like $130-150, and the Bosch is much cheaper. Are these interchangeable? Will a Bosch regulator work on my car? I read somewhere else that they operate at the same pressure, but I haven't been able to confirm this. If there's no difference, I'd get it from Autozone. Here is their part:
http://www.autozone.com/autozone/catalog/parts/partsShelf.jsp?displayName=Fuel+Injector+Pressure+Regulator¤tPage=1&categoryDisplayName=Fuel+Delivery&navValue=14900165&itemId=165-0&parentId=49-0
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