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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > Suspension | Chassis | Brakes > Help - Spring Identification
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      08-22-2020, 02:45 PM   #1
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Can someone help me determine the correct springs I'm looking for? I noticed that realoem does not have any info at all regarding springs and their part numbers.

I realize BMW springs have a two digit/letter code associated with each set (front and back) but I have no idea which ones I'm after...

LCI N20/B48 (option code 704, M Sport static suspension)
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      08-26-2020, 11:32 PM   #2
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FJ front
GF rear
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      08-26-2020, 11:46 PM   #3
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Originally Posted by mgeller View Post
FJ front
GF rear
Thanks. I noticed a listing in the classifieds for a B48 w/ M Sport and they posted photos of FH and GF. There seems to be consensus on the rears being GF at least.
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      08-26-2020, 11:47 PM   #4
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FaRKle! johnung

Can either of you confirm?
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      08-27-2020, 12:38 AM   #5
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Most likely is FH. I have the 704 and figured it would be the same across models, but it's a b58. Makes sense the fronts are different
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      08-27-2020, 11:49 AM   #6
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Quote:
Originally Posted by sspade View Post
FaRKle! johnung

Can either of you confirm?
Farkle! Is the man with springs and specifications of factory spring codes.
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      08-29-2020, 10:04 PM   #7
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So this is what I've been able to confirm in regard to the 4 cylinder, M Sport springs:

2017 (B48)

Front: FH
Rear: GF


2014 (N20)

Front: FF
Rear: GD


Can anyone else with a set lying around corroborate the info above? There seems to be a bit of variance/confusion in the spring codes depending on model year and engine code. I'd like a bit more data before I feel comfortable seeking and purchasing a set for my personal vehicle.

Appreciate any and all responses.
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      09-03-2020, 12:33 PM   #8
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Anyone with N20 or B48 springs laying around able to confirm or deny the codes listed below?

N20: FF, GD

B48: FH, GF
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      09-11-2020, 05:58 PM   #9
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Bump.

Would be forever grateful for someone to confirm the N20 spring codes.

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      01-07-2021, 02:19 PM   #10
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Not sure how helpful this is I was looking for answers my self for basically the same question. Mine is a F31 320d Ed (B47) and I have FF springs in the front.
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