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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

View Poll Results: Should I get it?
Yes, GMB is reliable 1 50.00%
No, stop being cheap and pay extra money on a better brand 1 50.00%
Voters: 2. You may not vote on this poll

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  #1  
Old 10-20-2011, 06:28 PM
andrewyoussef andrewyoussef is offline
Registered User
Location: Tallahassee, FL
 
Join Date: Nov 2010
Posts: 35
Mein Auto: 01 BMW 525i
Question GMB water pump? any good?

Hey guys I am getting ready to change my thermostat and I really wanna change my WP as well. My car has 101K on it so I am leaning towards doing the WP as a preventative maintenance as well plus I found a really good deal on it at autozone 36$ brand new. What do you guys think? should I get it or stick to another well known brand?

Thank you
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  #2  
Old 10-21-2011, 06:54 AM
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bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
 
Join Date: Mar 2008
Posts: 21,283
Mein Auto: 02 BMW 525i M54 auto 130K
See also:
- What are the most recommended BMW E39 waterpumps (1)

Quote:
1. Stewart EMP (some say they beef up the bearings to handle the metal)
2. Hepu (Cam like's em but I don't know much about 'em)
3. Geba (heavy cast metal impeller, bearings sometimes fail)
4. Graf welded steel impeller (better but also occasional bearing failure)
5. GMB (I think this is OE with composite plastic impellers???)
--- lower tier (I think) ---
6. Hella (I think this is OEM with composite plastic impellers)
7. Bosch (I don't know of any users who reported back on these)
8. Beck Arnley (they sell 'em but I don't know anyone using them)
9. Airtex (again, they sell 'em, but we'd have to hear from users first)
10. AC Delco (same as the last two above, they sell 'em)
11. A1 Cardone (they sell 'em, don't know much about 'em)
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  #3  
Old 10-21-2011, 07:00 AM
cn90 cn90 is offline
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Location: Omaha NE
 
Join Date: Mar 2006
Posts: 12,866
Mein Auto: 1998 528i 5-sp 140K+
I have had the HEPU now for 5 years, zero problems.
The Volvo people love HEPU (Made in Germany).
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  #4  
Old 10-21-2011, 07:26 AM
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BentValve BentValve is offline
Officially Welcomed to the 'Fest
Location: VA
 
Join Date: Sep 2010
Posts: 952
Mein Auto: 00 528i 3 pedals
GMB uses composite impellers and some have said they felt flimsy. Reviews online don't look too promising.
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  #5  
Old 10-21-2011, 07:42 AM
cn90 cn90 is offline
Officially Welcomed to the 'Fest
Location: Omaha NE
 
Join Date: Mar 2006
Posts: 12,866
Mein Auto: 1998 528i 5-sp 140K+
Autozone GMP water pump $36: questionable reliability, when it fails ---> engine overheats ---> $4000 repair
HEPU WPs have good records and cost $50-60/each.

This is not a place to save money, even if you are tight on budget.
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