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Old 09-19-2013, 06:22 PM   #1
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Default Rear coil spring identification, need help

Can anyone identify this Buick Lucerne rear coil spring, part # 25910859, letter code from spring tag: YAC? Is it for a FE1, [email protected], FE#, soft ride suspension, spot suspension, firm suspension
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Old 09-19-2013, 07:09 PM   #2
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On GM rear springs listings I see "for F suspension" or "for H suspension.. What does the "F" and the "H" stand for???
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Old 09-19-2013, 07:15 PM   #3
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The color on the tag, that is on the spring, is a creamy light yellow.. One site claims that the color on the tag can tell you what kind of ride that spring is designed for.. Educate me please, in reference to Buick suspensions that is.. Thank You in advance..
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Old 09-19-2013, 07:41 PM   #4
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Quote:
Originally Posted by LucerneOmatic View Post
On GM rear springs listings I see "for F suspension" or "for H suspension.. What does the "F" and the "H" stand for???
GM used letters preceded by numbers for their RPO'* (regular production options), e.g. L was for motors, M for transmissions, F for suspension. I have the codes imbedded in my memeory on my old 71 chevelle which has L48 (270hp turbofire), M20 (wide-ratio 4 spd) F41 (heavy duty suspension) and Z-15 (SS). I really don't give much thought to the grocery getter car RPO'* but you will find them on your build sheet or under the spare tire cover.

2004 Bonne SLE
71 Chevelle SS
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Old 09-19-2013, 09:01 PM   #5
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Thanks but I am familiar with the RPO codes and have a build sheet for the car.. This still doesn't identify the above springs that I have in a box.. But thank you for your help anyway.
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Old 09-19-2013, 11:23 PM   #6
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Thanks but I am familiar with the RPO codes and have a build sheet for the car.. This still doesn't identify the above springs that I have in a box.. But thank you for your help anyway.
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Old 09-20-2013, 09:15 AM   #7
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complete guess but could be the body like f is camaro and h is bonnie, etc.
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Old 09-20-2013, 06:24 PM   #8
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Could be a thought but if, for example, you go to a GM online parts supplier and list your make model and engine type and look for rear coil springs you will see "F" or "H" listed on some of them even though it is all for the same type of car.. Sorry, I thought that for all the rebuilding and deep interest one sees here on this board that I figured that the individual "RPO" code'* themselves would have been deciphered by now.. Yes I do know that some of them have been figured out already, just not the coil spring codes I guess.
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