Wow, thanks for the informative responses to my query of just over 24 hours ago! You've given me some options to look into. Clearly, a number of folks who really know Subarus and automotive mechanics. Glad I joined USMB.
Mine is leaking and needs replacement - on 2006 Outback. Mechanic says remanufactured pumps (Maval) last one to two years on average. New Subaru pump, twice the price . last 5-10 years. Would like to hear from anyone who has gone either route.