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spring load from part number

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Old Jan 18, 2014 | 06:38 PM
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spring load from part number
I found on my front leaf spring a number. ford f81a add It is a 3 leaf pack. I just bought 2 ats hd 3 leaf packs at 3950 I just wanna make sure it worth changing them. Thanks for your help
 
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Old Jan 18, 2014 | 07:37 PM
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I cant find any info on this part number
 
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Old Jan 19, 2014 | 06:05 AM
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im pretty sure they are 4400lbs
 
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Old Jan 19, 2014 | 06:53 AM
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they have stamped on them: Ford F81A ADD RPN 0279 I bought a set from ats that are hd 3 leaf packs that are rated at 3950lbs. Which of them are heavier?
 
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