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914World.com _ 914World Garage _ front hub difference
Posted by: 914andy Aug 31 2026, 10:49 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
Posted by: Steve Sep 1 2026, 07:18 AM
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.
Posted by: Tom1394racing Sep 1 2026, 07:42 AM
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.
Posted by: 914andy Sep 2 2026, 02:19 PM
Wow !!! awesome info. I have printed that out and added it to the Porsche file.
Thank You gentlemen.
Andy 
Posted by: flxzcat Sep 3 2026, 12:02 PM
So pre 74 are not hub centric?
Posted by: mepstein Sep 3 2026, 01:05 PM
QUOTE(flxzcat @ Sep 3 2026, 02:02 PM)
So pre 74 are not hub centric?
Right. Lug centric front and rear.
Posted by: Jamie Sep 3 2026, 02:09 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.
Posted by: mepstein Sep 3 2026, 02:32 PM
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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