alternator Bearings

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The rear bearing is a NSK 6000DU sealed both sides.
The front bearing being much larger normally dose not need replacement.
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The large bearing on the front is an NSK 60/22DU. The small bearing at the rear is an NSK 6000DU. Honda lists the small bearing as 31113-MN5-005 the Honda parts catalogs I have don't show the large end bearing. Normally if there's a problem with a bearing in the alternator it's the small one. You should be able to call a bearing supply shop and cross reference the NSK bearing numbers usually these type bearings are a pretty common size.

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I tried several parts dealers such as NAPA and advance and none could cross referance nsk6000du

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Try a bearing dealer. Went to local bearing dealer here in NH when planning to replace my 1500's front/rear wheel bearings. All were available except one for rear wheel.Saved quite a bit of $ over OEM. My 2 cents......Old Tom

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thanksI will there tomorrow since it is about 50 miles