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Discussion Starter · #1 · (Edited)
Hey guys, I need to replace some bearings in the diff. on my 2004 Frontier 4x4.

Who is the best source to buy from? Rock Auto if they have them? My mechanic would like to buy direct from the local Nissan dealer, but I am guessing the cost will be more for bearings.


Do you guys have a good online part source?

Need help, and appreciate the response.

Thanks!

Is the John Lee Nissan parts online a credible source for parts?
 

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I've never heard of that dealer, but Courtesyparts.com and nissanpartsdeal.com and both reputable places to buy genuine Nissan parts if that's what you want to use. Both will likely be cheaper than the local dealer but you should have them give you the prices, then check those websites to make sure.

If it were me, for something like this I'd order a quality aftermarket piece from rock auto and be done with it.

What bearings specifically need replaced?
 

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Discussion Starter · #3 ·
Not sure yet exactly. Its making a higher pitched howl noise. I have 283,000 miles on it. Could be a few bearings, dunno?
 

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Not sure yet exactly. Its making a higher pitched howl noise. I have 283,000 miles on it. Could be a few bearings, dunno?
Well if you're looking for bearings, timken makes quality bearings just as good as any oem (oem probably uses timken)

And you can get them for much cheaper than oem

Is there play in the yoke?

But if I were in your situation and was getting a high pitched howling from the rear end,

I would drain the fluid and check for chunks or shavings at the bottom of the housing, then my parts searching would begin based on what the chunks look like. If they look like roller bearings, cages, or races then that's what you'll probably need. If they look like pieces of ring and pinion teeth then I would start looking for a whole junkyard rear end with decent looking oil and no shavings for a direct swap

But that's just me
 

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If you're looking for someone to vouch for Rockauto, I will. Are most of their parts from China? Yes. I've bought parts from them for Nissan, GM, and Ford for the past 2-3 years and haven't had any fail. Have I been uneasy about it? Yes. Most recently I bought a new tranny pan for a Ford 4r70w and felt somewhat guilty that it was made in China. But, big picture, who cares? It fits exactly and was cheaper. And let's face it, even though our trucks are made here their foreign owned with foreign parts so does it really matter? Unless you have a bunch of money and care about politics I wouldn't worry about it. Mechanics like to back their work with warranties which is a fancy way of saying, "use our parts so we can add a mark up."
 

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I have no problem using a lot of Rockauto's part; they are the same as you get from the local auto parts store, just better selection and cheaper prices. As far as the "made in China," that has more to do with the part manufacturers than it does with Rockauto. Nissan uses Timken and NOK bearings in most of their vehicles.
 

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I have no problem using a lot of Rockauto's part; they are the same as you get from the local auto parts store, just better selection and cheaper prices. As far as the "made in China," that has more to do with the part manufacturers than it does with Rockauto. Nissan uses Timken and NOK bearings in most of their vehicles.
Agreed. They give you a good choice for an informed decision. However, I care about politics but my wallet doesn't. I'd rather not buy Chinese parts because of political reasons but I always end up doing it anyway. I beat myself up for it though. But, Rockauto is very up front about their purchasing. They buy closeouts, discontinued items, etc. If you have standards and your wallet allows it, I wouldn't buy from them. But I do and they're my goto source so I'll just STFU.
 

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I've bought literally hundreds of parts from Rockauto over the years...and I do have standards as to what parts I purchase. The only problem I've had with their parts is one time when I purchased a set of closeout struts for a Trans-AM and they were old and one was seized, however, they took them back and refunded my money without any question. Rockauto doesn't do anything different than any of the other major part stores. I once new a guy that worked with AC Delco. Did you ever wonder why an AC Delco part, like an alternator, sells for so much cheaper at a store like Advance Auto Parts than it does at a dealer? He told me that whenever the came across an alternator that failed testing on the line, they would pull a given number of alternators made before and after the failed part and sell those of to stores like Advance Auto and Autozone. There may or may not be anything wrong with those other alternators, but it does limit the chances of a defective part ending up in one of their preferred sellers, like GM dealerships. You get what you pay for...or, at least, hope to!
I prefer not to buy Chinese parts, too, but when even brands like Moog start selling parts under their name that were made in China, it can sometimes be a challenge to find parts that weren't made there...and even harder to find parts that were made in the USA. For example, just try to find a radiator (other than all-aluminum performance radiators) that isn't made in China. You might find one that is made in Vietnam, Indonesia or Korea...but will be hard-pressed to find one that is made in North America. Even most of Canada's Spectra Premium radiators are sourced from China. I'm not saying this is something I am happy about, but it is the current state of affairs.
 

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Discussion Starter · #9 ·
Hey guys, how do I know what rear diff. I have? Is that the dana 44 or the nissan axle? My truck is the 4x4, 2004 model. Is this where I can tell on the drivers side door jamb on the spec sticker?
 

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Dana 44s were not used in the first gen frontier.

Go to the thread stuck at the top f the first gen forum titled "hardbody and 1st gen axle info." That will tell you how to determine what Axles you have. And yes you will look at the axle code on the door sticker. That thread will help you decipher it.
 

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The axle code will tell you. For example, "HB46" will be a H233B axle with a 4.6:1 ratio. Limited slips came with a sticker on the rear, which may or may not be there any more. If you lift the back of the truck so the wheels are off the ground and put the trans in neutral, you can find out if it's LSD or an open carrier. Grab one of the rear wheels and turn it forward. If the wheel on the other side also turns forward, it's LSD. If it turns in the opposite direction, it's an open carrier.
 

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I've bought literally hundreds of parts from Rockauto over the years...and I do have standards as to what parts I purchase. The only problem I've had with their parts is one time when I purchased a set of closeout struts for a Trans-AM and they were old and one was seized, however, they took them back and refunded my money without any question. Rockauto doesn't do anything different than any of the other major part stores. I once new a guy that worked with AC Delco. Did you ever wonder why an AC Delco part, like an alternator, sells for so much cheaper at a store like Advance Auto Parts than it does at a dealer? He told me that whenever the came across an alternator that failed testing on the line, they would pull a given number of alternators made before and after the failed part and sell those of to stores like Advance Auto and Autozone. There may or may not be anything wrong with those other alternators, but it does limit the chances of a defective part ending up in one of their preferred sellers, like GM dealerships. You get what you pay for...or, at least, hope to!
I prefer not to buy Chinese parts, too, but when even brands like Moog start selling parts under their name that were made in China, it can sometimes be a challenge to find parts that weren't made there...and even harder to find parts that were made in the USA. For example, just try to find a radiator (other than all-aluminum performance radiators) that isn't made in China. You might find one that is made in Vietnam, Indonesia or Korea...but will be hard-pressed to find one that is made in North America. Even most of Canada's Spectra Premium radiators are sourced from China. I'm not saying this is something I am happy about, but it is the current state of affairs.
Agreed. You're a good man, Charlie Brown.
 

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....good grief!....
 

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For the H233B I got a rear diff install kit from 4x4 parts for like 250 with all the barrings and the seal and rebuilt mine in like a couple hours.

Also where are you in Michigan I might be able to look under and see if its the diff, carrier barring, or wheel barring, Im over in lake orion but travel a bit around the lower half of the state. The carrier barring and wheel barrings are more likely to go out then the diff barrings but if its howling and sounds like gear noise its probably the diff. If you had a bad carrier barring for to long the extra shake could have worn out the barrings on the pinion gear and you would want to look at that and replace if needed.
 
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