So, I have a 2009 Honda Pilot Touring Edition that I just purchased. The thing was in immaculate shape, but several issues popped up on me after I handed over the check. After I drove off the lot, I immediately replaced the timing belt, water pump, S belt , S belt tensioner, Harmonic balancer and then the starter went on me, so that's new as well. One additional problem I'm having is that I get power steering noise when turning extreme left or right due to air sneaking past the lower o-ring seal. Simple fix...just need a new o-ring...but finding the specific one for the 2009 model year has been a total pain. None of the online sources list the 2009 ring. They all list rings for either 01-08 or 10-15. 2009 is nowhere to be found. Since it's the first run of it's generation, I'm wondering if some 09's use the 2008 and earlier rings and others have the newer PS pump using the 2010 and up rings?

So my question is, which part number is correct? Some people seem to suggest that I get the number for the previous body style, others the 2010-2015. I want to be certain before I attempt to wrestle a 10mm socket around that lower pump hose bolt.