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Old Jan 24, 2017 | 02:37 PM
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Question on Serial Numbers

Quite a few times now I've gone to order parts and the site will specify, "From Serial G90,001" or something similar. What doesn't make sense to me however, is that the end of my trucks serial number is "C8558". That's completely missing a digit according to the parts site. This has occurred on RockAuto as well as AutoZone and I'm never quite sure what to think.

What gives?
 
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Old Jan 24, 2017 | 02:44 PM
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Look at your VIN, the serial number is the last six digits.
73-77 that means your serial number is one letter and five numbers (Axx,xxx), 78-79 its two letters and four numbers (AAx,xxx)
 
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Old Jan 24, 2017 | 02:55 PM
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Typically it is discerning the F250 4x4 77 model year since the "78" model actually began in 77.5 or after Y20,000 serial number

77.5 or Y20,000 and lower = "Highboy"
77.5 Y20,001 = "Lowboy"?
 
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Old Jan 24, 2017 | 02:59 PM
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Okay, so then my serial number is "EC8558". And I guess that puts me "after" the number G90001 since that sequence style wasn't used after 77. Sound right?
 
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Old Jan 24, 2017 | 03:03 PM
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Yes, double letters = 78 and up (Not 100% true but in the range we are talking about it is true)
 
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Old Jan 24, 2017 | 03:15 PM
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Originally Posted by F250_Super_4X4
Yes, double letters = 78 and up (Not 100% true but in the range we are talking about it is true)
The '77 model year had two serial number sequences, O00,001-O99,999 andX80,001-Z25,000. The 78 model year ranged from AE0,001-CK9,999,
the 79 model year was DC0,001-FK9,000.
And yes, the highboy break was Y20,001. Before is highboy, from is lowboy.
 
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Old Jan 24, 2017 | 11:52 PM
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I stopped using LMC truck parts because they made it soooo confusing to order, by using truck serial/VIN. My (titled as 78) truck is a complete mashup of parts from 73 thru 79, so it was nearly impossible to order the correct parts that way unless it was something common standard, like door seals, etc.


Would always get someone's grandmother babysitting on the phone who knew nothing about these trucks, and the answer would always be the same: "well, if ya don't don't know the serial number, I caint help ya."


So, started ordering from JFB and DC, have gotten the correct part every time.
 
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Old Jan 25, 2017 | 01:23 AM
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Originally Posted by hail destroyer
I stopped using LMC truck parts because they made it soooo confusing to order, by using truck serial/VIN. My (titled as 78) truck is a complete mashup of parts from 73 thru 79, so it was nearly impossible to order the correct parts that way unless it was something common standard, like door seals, etc.

So, started ordering from JFB and DC, have gotten the correct part every time.
I've made it a practice to write down (enter a memo in my phone) the VIN of donor rigs if the part or system involves a serial number split. Then I enter it the truck's notebook.... record keeping is a beyotch! For example, my Autozone vehicle list has a 78 351M/C6 although the brake parts I ordered were intended for my 70 with the donor's disc brake swap.
 
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Old Jan 25, 2017 | 02:25 AM
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Yeah this is for a pinion seal, there's so many axle and year options I'm just hoping for the best from rockauto. I think I got it right. I've seen it when trying to order other parts but don't remember what.
 
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