wheel bearings rear '07 STR
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Forum sponsor SNG Barratt has OE p/n XR81723 for $77.38, also two alternates at $60.96 and $40 respectively. By the way, SNG also has a free printed parts catalog for the S Type that they'll send you by email request. I had one for the X Type I owned and it was a great reference. They also have a downloadable online version.