This is all a direct swap into M54-powered cars. For N52 cars (3.0si), you may be able to use a LUK LF30 power steering pump from an E90 with an E36/E46 steering rack and ATF fluid. The LUK LF30 was used in some early E46s with ATF, and in E9X models with CHF11S.
Parts you will need:
Steering Column/Shaft:
Z4 M Intermediate shaft
Part #32307836809 (LHD)
Part #32307836811 (RHD)
You will need this piece to connect the steering rack pinion to the steering column. The Z4 M one is meant to connect to the hydraulic rack pinions. The standard Z4 intermediate shaft will not fit onto the hydraulic steering rack. You'll save a lot of money buying it used.
Z4 M steering column
Part #32307841203 (LHD)
Part #32307841204 (RHD)
Not required but preferable. Also much cheaper to buy used. The Z4 M steering column doesn't have the electric-assist drive built into it.
Rack and Pump:
Z3/E36/E46/Z4 M steering rack
I used an E46 3-series steering rack because it is the most easily-available.
LUK LF20 power steering pump (M54 Engine)
Part #32416760034
Buy a used or aftermarket one unless you have a thick wallet.
LUK LF30 power steering pump (N52 Engine)
Part #32416769887
Hoses/Lines:
High-pressure line from pump to rack (LHD, M54 engine)
Part #32416774215
High-pressure line from pump to rack (LHD, N52 engine)
Part #32416764725
Power steering cooler loop
Part #17111436262
Line from reservoir to pump
Part #32416750155
Cooler return line
Part #32416796390
Fluid Reservoir and Bracket:
Fluid reservoir
Part #32416851217
Reservoir mounting bracket (M54 and N52)
Part #32411128333
Mounting bracket (additional, needed for N52 along with the above one)
Part #32416768096
Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.
Converting Your E85/E86 to Hydraulic Steering
- vbelsky
- Newbie
- Posts: 14
- Joined: Wed Jan 03, 2018 2:00 am
Converting Your E85/E86 to Hydraulic Steering
Last edited by vbelsky on Tue May 29, 2018 10:37 pm, edited 8 times in total.
- Ducklakeview
- Lifer
- Posts: 6362
- Joined: Tue Mar 22, 2016 4:08 pm
- Location: Merseyside
Converting Your E85/E86 to Hydraulic Steering
Nice to have all the part numbers!
Mike
Mike
-
- Newbie
- Posts: 5
- Joined: Wed Feb 27, 2019 3:33 am
Converting Your E85/E86 to Hydraulic Steering
Thank you so much for documenting the list with part numbers. That's brilliant.vbelsky wrote: ↑Tue May 29, 2018 5:03 am
Rack and Pump:
Z3/E36/E46/Z4 M steering rack
I used an E46 3-series steering rack because it is the most easily-available.
LUK LF20 power steering pump (M54 Engine)
Part #32416760034
Buy a used or aftermarket one unless you have a thick wallet.
LUK LF30 power steering pump (N52 Engine)
Part #32416769887
Hoses/Lines:
High-pressure line from pump to rack (LHD, M54 engine)
Part #32416774215
High-pressure line from pump to rack (LHD, N52 engine)
Part #32416764725
Power steering cooler loop
Part #17111436262
Line from reservoir to pump
Part #32416750155
Cooler return line
Part #32416796390
Fluid Reservoir and Bracket:
Fluid reservoir
Part #32416851217
Reservoir mounting bracket (M54 and N52)
Part #32411128333
Mounting bracket (additional, needed for N52 along with the above one)
Part #32416768096
For the specific parts above, are the same part numbers applicable to both LHD & RHD cars? What's the part number for the high-pressure lines for RHD cars? BTW, which E46 steering rack you used? Got the part number for that?
Thanks again!
Newer: F20 M140i (auto)
Older: 993 C2S, E30 320is, E85 3.0 (all manual)
Older: 993 C2S, E30 320is, E85 3.0 (all manual)
-
- Newbie
- Posts: 4
- Joined: Fri Oct 16, 2020 10:52 am
Converting Your E85/E86 to Hydraulic Steering
Hi
I have a 2003 Z4 3.0i with electric steering that has now totally stopped working, and, after taking it to an independent BMW specialist, it seems the whole unit needs to be replaced and a very expensive job. The car is now sorn while I try to decide what to do.
I have seen some posts about converting the Z4 to hydraulic steering as I understand the car is based on a 3 series.
I would appreciate any help. Is it a good idea? Has anyone had this done?
My local garage would be prepared to take on the work as they are ex BMW mechanics, but they need as much information as possible about the parts that are needed. (I'm in Wraxall, Bristol BTW)
Thanks
Paul
I have a 2003 Z4 3.0i with electric steering that has now totally stopped working, and, after taking it to an independent BMW specialist, it seems the whole unit needs to be replaced and a very expensive job. The car is now sorn while I try to decide what to do.
I have seen some posts about converting the Z4 to hydraulic steering as I understand the car is based on a 3 series.
I would appreciate any help. Is it a good idea? Has anyone had this done?
My local garage would be prepared to take on the work as they are ex BMW mechanics, but they need as much information as possible about the parts that are needed. (I'm in Wraxall, Bristol BTW)
Thanks
Paul
- Rockhopper
- Senior Member
- Posts: 1136
- Joined: Fri Mar 06, 2020 7:05 pm
- Location: Mansfield
Converting Your E85/E86 to Hydraulic Steering
Scroll up the page!
-
- Newbie
- Posts: 3
- Joined: Sat Jul 04, 2020 4:23 pm
Converting Your E85/E86 to Hydraulic Steering
Hey there!vbelsky wrote: ↑Tue May 29, 2018 5:03 am Steering Column/Shaft:
Z4 M Intermediate shaft
Part #32307836809 (LHD)
Part #32307836811 (RHD)
You will need this piece to connect the steering rack pinion to the steering column. The Z4 M one is meant to connect to the hydraulic rack pinions. The standard Z4 intermediate shaft will not fit onto the hydraulic steering rack. You'll save a lot of money buying it used.
I was wondering if the 2 parts are identical. I found a RHD part and I have a LHD car. Do you know anything about this?
Thanks a lot
Mihai
- Reamesy
- Member
- Posts: 657
- Joined: Mon Aug 31, 2020 12:40 pm
- Location: Whitchurch
Converting Your E85/E86 to Hydraulic Steering
How does this affect the DSC and any warning lights. Does it require any coding as leaving warning lights on will be a MOT failure.
Currently; 2011 E89 23i SDrive M Sport Highline Titan Silver
Previously;
2014 SLK250CDI AMG Sport
2012 E89 SDrive 2.0 M Sport. White
2011 Audi TT Quattro
2006 Z4 2.5 Sport
2013 420D coupe
2002 Z3 2.2 Sport
1996 Z3 1.9
Previously;
2014 SLK250CDI AMG Sport
2012 E89 SDrive 2.0 M Sport. White
2011 Audi TT Quattro
2006 Z4 2.5 Sport
2013 420D coupe
2002 Z3 2.2 Sport
1996 Z3 1.9