Contsi

2007 MDX - Are the 2 O rings the same part number?

Than you

Skirmich

You mean for the inlet and outlet hoses? if so then No they are different sizes.

thoiboi

https://www.oemacuraparts.com/v-2007...s-pump-bracket

Contsi

Thanks for the quick response.

I have a high pitch whining noise which seems replacing the O rings may help.
Looks like part #s 13 & 14?

AcuraAddicted

13 - yes. 14 - no. The other one is not on this page. It's in "P.S. Lines"

You can check out the process and proper part numbers (in the description) in the following video:

csmeance

you may need to replace the internal seals rather than the 2 seals you mentioned. Gates has a kit for less than $20 and it'll take about 1hr to rebuild at home. You'll be surprised at how the old seals have flattened out!

acuratech481

We rebuild these at work all the time, super easy! The one that causes noise issues is usually the suction hose inlet o-ring and the hoses from the reservoir have become hard and don't seal properly allowing air to be sucked in.