Click to go to Forum Home Click to go to maXbimmer Home

Go Back   maXbimmer Forums > maXimum Tech > 5 series
User Name

Welcome to!

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

Thread Tools Rate Thread Display Modes
Old 06-28-2011, 10:44 PM   #1
Dado 540
6th Gear Member
Dado 540's Avatar
Join Date: Jan 2008
Location: GTA
Posts: 1,985
Anyone dealt with an E39 540i auxiliary water pump

I have developed a leak on mine. Prices seem to be in the $400s for a replacement part.
E39 540i Sport
Dado 540 is offline   Reply With Quote
Old 06-28-2011, 10:52 PM   #2
6th Gear Member
simplycars's Avatar
Join Date: Nov 2008
Location: Oakville / Mississauga
Posts: 1,589
yes, it happens often on 7s and 5s.
whatever you do don't buy used part.
simplycars is offline   Reply With Quote
Old 06-28-2011, 11:05 PM   #3
6th Gear Member
Nick_V's Avatar
Join Date: Feb 2009
Location: Hamilton
Posts: 1,328
Not sure if it's set up the same as on an E34, but if so you can just bypass it.
Nick_V is online now   Reply With Quote
Old 06-29-2011, 12:13 AM   #4
Bimmer Heaven
Bimmer Heaven's Avatar
Join Date: Feb 2002
Location: Ontario
Posts: 15,673
It depends what year. They have 2 types. Never seen a problem with the old type, altho the VALVES tend to go...but pump i have seen in the high 300K, all worked and no leaks. Chances are a good used one will outlast your engine!
Specialized in BMW recycling, all OEM used parts
Up to 90% off new cost!!!
Most models E30 E36 E46 E90 E92 E93 E28 E24 E34 E39 E60 E61 E32 E38 E65 E66 X3 X5 M3 M5 Z3 Z4 F30 F32 F10 F01

Call 11-8PM 416 821-2578
New inventory daily. 100+ cars now in stock!
Bimmer Heaven is offline   Reply With Quote
Old 06-29-2011, 04:34 PM   #5
3rd Gear Member
MLue1's Avatar
Join Date: May 2008
Location: Markham
Posts: 458
Originally Posted by Dado 540 View Post
I have developed a leak on mine. Prices seem to be in the $400s for a replacement part.
Hey Dado, mine had a leak but it stopped as misteriously as it started. My E38 740 buddy David fixed his auxiliary water pump and if has been good for a coupke of years now. His instructions were simple, take apart the auxiliary water pump and reseal by applying RTV to the mating surfaces, put part back togeather but do not tighten the bolts all the way, wait as per RTV instructions for the sealant to setup, then tighten to spec.

Try it what do you have to loose.
'99 E39 540iT
MLue1 is offline   Reply With Quote

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump

All times are GMT -4. The time now is 03:08 PM.

Powered by vBulletin® Version 3.8.10
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Maxbimmer Copyright 2001 - 2018