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Order Ford 801 Parts Online

ford 801 901 differential casting numbers

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texfordfan

04-04-2018 18:22:22




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I understand there is a difference between the two. But can anyone provide the casting number for each or both. The guy at the salvage yard doesn't know the difference and I want to make sure he ships the correct one. Unfortunately I'm on the road and I can't go look at mine to know for sure. Thanks for the help.




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gofast12

04-06-2018 04:26:57




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 Re: ford 801 901 differential casting numbers in reply to texfordfan, 04-04-2018 18:22:22  
Seems to me the 801 casting should have one hole cast at the top of the casting for the top link bracket. The 901 will have holes just above the PTO for the top link bracket which is much longer than the 801. 01 series will also have holes under it for the brake cross over shaft.



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wayde

04-05-2018 19:01:47




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 Re: ford 801 901 differential casting numbers in reply to texfordfan, 04-04-2018 18:22:22  
ring gear will be on other side? ,901 with drop case will be the small ones [601-2000 ] 901 with out drop case will be the same as 801.



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Kirk-NJ

04-05-2018 14:37:36




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 Re: ford 801 901 differential casting numbers in reply to texfordfan, 04-04-2018 18:22:22  
I think the 901 used the same rear housing as the 601/200



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WayneIA

04-05-2018 17:23:58




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 Re: ford 801 901 differential casting numbers in reply to Kirk-NJ, 04-05-2018 14:37:36  
Kirk, I don't believe that is correct. The 900 axle housing has two anchor points for the lift arm bracket. But it does take the NAA gasket between the axle housing and the center housing. I have replaced 4 900 axle housings, two with mounted pickers and one of those in sub 0 temperatures . I really remember that one.



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Sean in PA

04-05-2018 13:05:10




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 Re: ford 801 901 differential casting numbers in reply to texfordfan, 04-04-2018 18:22:22  
Part numbers and casting numbers are usually two completely different numbers. The casting number is for the engineers who designed the casting, and the part number is for the parts inventory system, and they are rarely the same number for the same casting /part.

A casting design may change over time and so the casting number will be different from one minor design change to the next, but it will still be tracked by the same part number. There may be 3, or 4, or even possibly 6 different casting numbers that would be the same part number for a 901 center housing. Same goes for an 801 center housing. Just look at how many different casting numbers were used for the 172 ci red tiger engine block, or the 201 ci 3 cylinder engine block.

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texfordfan

04-05-2018 13:24:35




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 Re: ford 801 901 differential casting numbers in reply to Sean in PA, 04-05-2018 13:05:10  
That's a good explanation and since the these two models use different housings the casting numbers will identify which model's housing I'm looking at. See my other post for a physical difference I noticed today between these two housings.



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WayneIA

04-05-2018 02:53:57




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 Re: ford 801 901 differential casting numbers in reply to texfordfan, 04-04-2018 18:22:22  
If you are referring to the complete center housing .Per NH parts site here, PN 312477. Give this a shot, The 901 has a arm bracket, one on either side, at the bottom of the case to attach the lift arms . The 801 just has pins directly out of the center housing



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texfordfan

04-05-2018 12:35:35




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 Re: ford 801 901 differential casting numbers in reply to WayneIA, 04-05-2018 02:53:57  
Well, I got to look at both of them today side by side and I noticed something. On the 801 housing at the rear are some easy to see vertical rounded ridges that run across the housing just below the center link attachment point. On the 901 those are absent. The 901 also seems to measure just a little bit more narrow than the 801 housing does.



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riveroadrat

04-04-2018 18:46:44




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 Re: ford 801 901 differential casting numbers in reply to texfordfan, 04-04-2018 18:22:22  
Did you mean the actual differential assembly inside the case or the rear axle center case itself?



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texfordfan

04-04-2018 20:15:19




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 Re: ford 801 901 differential casting numbers in reply to riveroadrat, 04-04-2018 18:46:44  
The case itself



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riveroadrat

04-04-2018 18:42:51




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 Re: ford 801 901 differential casting numbers in reply to texfordfan, 04-04-2018 18:22:22  
I believe you can look it up at the CNH partstore or call any Ford tractor dealer and ask.



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riveroadrat

04-04-2018 18:58:58




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 Re: ford 801 901 differential casting numbers in reply to riveroadrat, 04-04-2018 18:42:51  
I found it for 801 CONN 4204A, 901 is the same number for the differential case assembly. They show 4 different part numbers fot the center housing but I cant read the breakdown of the fitment. I used to be able to but since they "improved" their system I cant see all the info anymore. You might still want to check with dealer.



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