Power steering pump drama. Quieter replacement advice 2006 C200 Kompressor
Thread Starter
Newbie
Joined: Jan 2020
Posts: 10
Likes: 2
From: Netherlands
C200 kompressor coupe M271940 2006
Power steering pump drama. Quieter replacement advice 2006 C200 Kompressor
Hi all,
Seeking real-world advice on quiet power steering pump replacements for my 2006 C200 Kompressor (CL203 Sport Edition, M271 engine, OEM part A0034664101).
Background:
- Original ZF pump lasted ~270k km (became whiny from age/wear).
- Replaced with new NTY SPWME008 (with reservoir) via workshop.
- Immediate constant RPM-dependent whine from day one (idle to high revs, unchanged by steering load or temperature).
- Thorough checks: multiple bleeds (wheels off ground, lock-to-lock), loose return clamp fixed with jubilee, long drives/tests → system fully healthy (clear fluid, no air/bubbles/leaks, stable level).
- Brief low-fluid run (~2.5 km during initial flush) noted, but whine matches common NTY experiences.
- Tried a used ZF (~170k km) → rejected due to shaft play and rattle.
- NTY back in temporarily (warranty claim ongoing).
The noise is typical budget aftermarket (tolerances/turbulence) – system itself is perfect.
Questions:
1. Which pumps have given you true OEM-level quietness on W203/M271?
• LuK new?
• Lizarte reman (on OE core)?
• Bosch?
• Genuine ZF reman?
• Others (Meyle, Febi, etc.)?
2. Any brands to definitely avoid besides NTY/Ridex/Mapco?
3. How do your replacements compare noise-wise to the original ZF?
Prefer options available in EU (Autodoc, Allegro, etc.).
Thanks in advance – really want that proper silence back!
Cheers
Seeking real-world advice on quiet power steering pump replacements for my 2006 C200 Kompressor (CL203 Sport Edition, M271 engine, OEM part A0034664101).
Background:
- Original ZF pump lasted ~270k km (became whiny from age/wear).
- Replaced with new NTY SPWME008 (with reservoir) via workshop.
- Immediate constant RPM-dependent whine from day one (idle to high revs, unchanged by steering load or temperature).
- Thorough checks: multiple bleeds (wheels off ground, lock-to-lock), loose return clamp fixed with jubilee, long drives/tests → system fully healthy (clear fluid, no air/bubbles/leaks, stable level).
- Brief low-fluid run (~2.5 km during initial flush) noted, but whine matches common NTY experiences.
- Tried a used ZF (~170k km) → rejected due to shaft play and rattle.
- NTY back in temporarily (warranty claim ongoing).
The noise is typical budget aftermarket (tolerances/turbulence) – system itself is perfect.
Questions:
1. Which pumps have given you true OEM-level quietness on W203/M271?
• LuK new?
• Lizarte reman (on OE core)?
• Bosch?
• Genuine ZF reman?
• Others (Meyle, Febi, etc.)?
2. Any brands to definitely avoid besides NTY/Ridex/Mapco?
3. How do your replacements compare noise-wise to the original ZF?
Prefer options available in EU (Autodoc, Allegro, etc.).
Thanks in advance – really want that proper silence back!
Cheers
Last edited by Rcb82; Dec 21, 2025 at 04:42 PM.
Newbie
Joined: Nov 2006
Posts: 9
Likes: 1
From: Near the Motor City
2005 C230 Kompressor
I have a 2005 C230K with the M271. I replaced the power steering pump a couple months ago and am happy with the new one. This one is made in the US though. https://www.rockauto.com/en/moreinfo...&pt=7380&jsn=1
The part number in the description matches what you have, but double-check.
I felt more comfortable buying this after reading about Lares - they are totally focused on power steering, steering gears. Not your average after-market part.
https://www.larescorp.com/About-Lares
Good luck.
The part number in the description matches what you have, but double-check.
I felt more comfortable buying this after reading about Lares - they are totally focused on power steering, steering gears. Not your average after-market part.
https://www.larescorp.com/About-Lares
Good luck.
Last edited by letiridumed; Jan 17, 2026 at 12:16 PM.
