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Mar 14, 2015 · Most likely, you either have a hydraulic fluid leak somewhere (thus leading to too low a fluid level in the pump), or the pump is getting weak. The pump (also known as hydro unit p/n 8 234 530 or 54347025595 or HB70346-002) is located behind the left rear wheel.
Nov 30, 2019 · BMW E46 water pump replacement | 1998-2006 3 series | Easily replace the leaking or failing water pump in your E46 3 series yourself - we show you how!
Jun 28, 2023 · BMW E46 Water Pump Replacement. Jump to Photos. 17 Comments. Project Time: 3 hours. Tab: $200. Talent. Tools: Set of sockets, wrenches, screwdrivers, two M6 bolts, eye protection. Parts Required: Water pump, hoses, engine coolant. Performance Gain: Car will cool down again. Complementary Modification: Change serpentine belt, radiator hoses.
Dec 13, 2007 · 1873 posts · Joined 2006. #7 · Dec 13, 2007. :blah: I just changed out my OEM water pump along with my OEM thermostat at 240,000 miles only because I thought it might be that time. I think my thermostat was leaking a little around the seal, therefore since I was in there I figured why not do the water pump as well.
Dec 28, 2012 · mikeymo27. 25 posts · Joined 2010. #3 · Jan 20, 2016. Got a similar problem, had the car for 5 years never leaked before. Got the hard top on and water is getting into the soft top compartment and is leaking into the boot. Must be one of the seals around the soft top compartment...
