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Old 12-03-2011, 03:30 PM   #5
fdryer
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Join Date: Jan 2006
Location: NYC
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2003 L-Series 3.0L Sedan
Default Re: 2002 LW300: Recommended parts for timing belt and water pump replacement

Since you can appreciate the difficulty in accessing this area, replacing everything necessary with long term goals tends to set a course. Wondering which idler bearing and water pump will hold up to long term wear and tear may be as simple as finding the ones with a lifetime warranty, if available. Bearings come with many ratings from basic to precision. Replacement idlers are expected to have bearings for long term use so replacing ones not in any kit just ensures a new set are used, nothing more as no one can guarantee a bearing will last long when put into service. The same for water pumps or any other part we buy. We expect some sort of service life so anything beyond the first engine start is relying on industry standards. Bearings used depends on where they're used to determine service life and environment they're exposed to.

To get into bearing 101, Google bearings and find out the dirt on what makes one bearing the most expensive (precision) against a plain one for general purpose use. The more you know........................

In the end, what you choose won't be wrong.
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