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Old 03-13-2010, 08:45 AM
KansasJoe KansasJoe is offline
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Super Duty Front Spring Code and Capacity Chart

I see a lot of people asking about front leaf spring codes and what their actual capacity is so I went through my spring books and matched up the codes with capacities so here you go. I'll list the spring code and then the capacity in pounds next to it and the capacity is per side.

R = 1430
S = 1630
T = 1830
U = 2030
V = 2230
W = 2430
X = 2630

Now in the middle of 00 Ford switched from a berlin eye design to a standard design so some of the springs such as the R code was only used from 99-00 and when you switch out springs you want to be sure to switch out to the 01-04 version because of the standard eye receiving full support from the spring underneath it. Easiest way to tell on the berlin eye is if there's a gap between your 2 leafs and you should always replace this design with the standard eye.

FYI - There is also a 3950 lb capacity spring but this is the X code with an extra tapered leaf installed on it so the 2630 is the heaviest Ford made.
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Old 02-05-2012, 03:11 PM
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Quote:
Originally Posted by KansasJoe View Post
I see a lot of people asking about front leaf spring codes and what their actual capacity is so I went through my spring books and matched up the codes with capacities so here you go. I'll list the spring code and then the capacity in pounds next to it and the capacity is per side.

R = 1430
S = 1630
T = 1830
U = 2030
V = 2230
W = 2430
X = 2630

Now in the middle of 00 Ford switched from a berlin eye design to a standard design so some of the springs such as the R code was only used from 99-00 and when you switch out springs you want to be sure to switch out to the 01-04 version because of the standard eye receiving full support from the spring underneath it. Easiest way to tell on the berlin eye is if there's a gap between your 2 leafs and you should always replace this design with the standard eye.

FYI - There is also a 3950 lb capacity spring but this is the X code with an extra tapered leaf installed on it so the 2630 is the heaviest Ford made.

how do u know what spring code u have!!!!
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Old 02-05-2012, 07:29 PM
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Quote:
Originally Posted by Rosson03 View Post
how do u know what spring code u have!!!!
Should be on the door jamb sticker.
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Old 02-05-2012, 08:55 PM
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Another way??

My truck no longer has a sticker. Is there another way to tell. I was able to detirmine that it came with trailer tow and camper pack.

Thanks for posting the initial info Joe.
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Old 02-09-2012, 11:20 AM
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I'm in the same boat

My truck is a 2000 f250 2-wheel drive. My door sticker is gone also, I've been trying to find out what my spring codes probably are. I got a build sheet from ford, it has on there heavy duty service package. I got another ford OASIS report that says it has a camper package. Doesn't mention heavy duty service package. I email ford about it and all they told me was it has the 5588 C spring code, I found out through some reasearch this is an AUX rear spring probably used with the Camper Package. So far I still don't know what my front coil spring code is or what the basic rear leaf spring code is. Any advise from anyone on how to find this out?
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Old 05-14-2013, 07:40 AM
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Hey everyone, I'm having a case of "spring fever" and trying to find some info like all the rest of you............ especially the 2wd folks. Most comments in the Excursion section for 2wd suggests a Z code coil at 4800#. I'm not against that but I would like to know what's out there before making a decision. Another curosity is whether the later Super Duty coil springs will fit the earlier models are not?

Also, I'm up the bayou a little myself in that my sticker is gone......... I'm currently working with the Parts-Man at the dealership to retrieve a new sticker using my VIN.

I appreciate any useful info. Thanks
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Old 05-14-2013, 07:40 AM
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