I almost always source maintence items from the dealer. Usually the price isn't a whole lot more. You know the parts are good, and will actually fit. I've had too many times where I would try and pinch a few pennies by trying to get some "cheap parts" over the 'net, only to end up losing money in the end. By the time shipping, duty, and who knows what other fees pop up the parts don't look so cheap after all. Then you worry it they sent the right stuff, and there's the re-stocking fees and more shipping when you get the wrong stuff. I find it easier, and much less stressful to get stuff from the dealer which is almost always in stock and be done with it. A quick bit of research before purchacing will always help your decision.

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1967 200D FINTAIL (in service)- 86K
1983 VOLVO 244 DL (daily driver)- 300K
1988 VOLVO 244 DL (ice racer) - 345K