 front hub difference |
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| 914andy |
 Aug 31 2026, 10:49 AM
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#1
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Member  Group: Members Posts: 63 Joined: 23-December 11 From: Nashville tn Member No.: 13,929 Region Association: None 
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Hello all,
I am trying to determine the difference between part #'s for the front hubs. 91134106506 for a 911 koni strut 90134106504 for a 914-6 strut I am going to change my stock -6 struts over to later 911 Koni struts. Don't want to get half way into it and find out I need more parts. Thanks Andy |
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| Steve |
Sep 1 2026, 07:18 AM
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#2
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914 Guru Group: Members Posts: 6,084 Joined: 14-June 03 From: Laguna Niguel, CA Member No.: 822 Region Association: Southern California
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QUOTE(914andy @ Aug 31 2026, 09:49 AM)  Hello all, I am trying to determine the difference between part #'s for the front hubs. 91134106506 for a 911 koni strut 90134106504 for a 914-6 strut I am going to change my stock -6 struts over to later 911 Koni struts. Don't want to get half way into it and find out I need more parts. Thanks Andy I think it’s hub centric versus non hub centric. Early 901 depended on the lug nuts to center the wheel. |
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| Tom1394racing |
Sep 1 2026, 07:42 AM
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#3
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Senior Member Group: Members Posts: 524 Joined: 25-August 07 From: CT Member No.: 8,039 Region Association: North East States
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This shows the differences in 911 hubs.
 The difference between the 04 and the 06 is in the bearing cap. Outside fit vs inside fit. |
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| 914andy |
Sep 2 2026, 02:19 PM
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#4
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Member Group: Members Posts: 63 Joined: 23-December 11 From: Nashville tn Member No.: 13,929 Region Association: None
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Wow !!! awesome info. I have printed that out and added it to the Porsche file.
Thank You gentlemen. Andy (IMG:style_emoticons/default/beerchug.gif) |
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| flxzcat |
Sep 3 2026, 12:02 PM
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#5
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Member Group: Members Posts: 127 Joined: 13-June 11 From: Lake Forest, So. Cal. Member No.: 13,188 Region Association: Southern California |
So pre 74 are not hub centric?
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| mepstein |
Sep 3 2026, 01:05 PM
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#6
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914-6 GT in waiting Group: Members Posts: 20,917 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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QUOTE(flxzcat @ Sep 3 2026, 02:02 PM) So pre 74 are not hub centric? Right. Lug centric front and rear. |
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| Jamie |
Sep 3 2026, 02:09 PM
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#7
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Senior Member Group: Members Posts: 1,225 Joined: 13-October 04 From: Georgetown,KY Member No.: 2,939 Region Association: South East States
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QUOTE(mepstein @ Sep 3 2026, 11:05 AM) QUOTE(flxzcat @ Sep 3 2026, 02:02 PM) So pre 74 are not hub centric? Right. Lug centric front and rear. My original 73 is hub centric, as I found out when trying to mount spacers. |
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| mepstein |
Sep 3 2026, 02:32 PM
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#8
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914-6 GT in waiting Group: Members Posts: 20,917 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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QUOTE(Jamie @ Sep 3 2026, 04:09 PM) QUOTE(mepstein @ Sep 3 2026, 11:05 AM) QUOTE(flxzcat @ Sep 3 2026, 02:02 PM) So pre 74 are not hub centric? Right. Lug centric front and rear. My original 73 is hub centric, as I found out when trying to mount spacers. It also depends how you define the year. Build date or model year date. |
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| frank_c |
Sep 17 2026, 05:02 PM
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#9
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Member Group: Members Posts: 108 Joined: 29-December 24 From: Austin, TX Member No.: 28,542 Region Association: None |
Hello,
I came upon this thread while searching for "hub centric' and thought this might be a good place to post my question. I am in the process of a 5-lug conversion on the '76 2.0. The 911 front struts I acquired are hub-centric (far right -4R casting in photo re-posted below). My plan is to go with 15x6 Fuchs and I found a set, but they are from a '73 and as such are lug-centric (.00 part number). I know the lug-centric wheels will fit on the 914 rear hubs (PMB 5-lug hubs) as these hubs are also lug-centric. My question is regarding the fronts. I've seen some posts stating that the wheels will need to be machined to fit over the 71.5mm centering piece on the hub. But then I've also read that the bore of the lug-centric wheels is 71.6mm, and thus will slip over the hub-centric hub. Can anyone confirm if the .00 Fuchs will fit on the -4R front hubs without machining?  Thanks, Frank |
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| mepstein |
Sep 17 2026, 05:42 PM
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#10
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914-6 GT in waiting Group: Members Posts: 20,917 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region
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I’ve never had to machine any Fuchs to fit on any front hub. Perhaps I didn’t replicate a combo that requires machining but we regularly throw on random size Fuchs on any year 911 just to make it a roller.
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