BMW E46 Cooling System Overhaul DIY (2001-2005 BMW 330i M54 Water Pump, Radiator, & Thermostat)

►At around two decades old, the rubber and plastic cooling system components in your M54-powered E46 3-series are likely on their last legs, assuming they haven't already been replaced. Hoses, thermostats, radiators, and water pumps—the main pieces of every cooling system—should all be replaced at some point, and there's no better way to do it than all at once. Replacing your BMW E46's cooling system in one shot is the best way to ensure reliable, trouble-free driving for tens of thousands of miles to come.

The plastic ends of the radiator and thermostat housing will crack and leak. The water pump's bearings will begin to leak or even seize. Hoses will dry out and break—even the belts will do the same. Luckily, there isn't any major work needed to replace them all. Special tools aren't required, and neither is a lift. Just grab your socket set and start wrenching.

In this video, FCP Euro's Professional DIY'er Mike Hidalgo tackles a cooling system overhaul on an E46 BMW 330i.

00:00 - Intro
02:31 - Tools Needed
03:14 - Job Start/Intake Removal
05:03 - Coolant Draining
10:49 - Fan Removal
15:01 - Expansion Tank Removal
16:27 - Coolant Hose Removal
21:34 - AC Belt Removal
22:11 - Radiator Removal
23:11 - Water Pump & Thermostat Removal
28:52 - Water Pump & Thermostat Installation
32:36 - Radiator Prep
39:01 - Radiator Installation
40:34 - Expansion Tank Installation
42:25 - Coolant Hoses Installation
45:51 - Fan Installation
50:47 - Bleeding & Filling
56:02 - Airbox Installation
56:58 - Wrap-Up

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BMW 325Ci
2002 BMW 325Ci Cooling System Service Kit
Transmission: Automatic, From 9/2002
2003 BMW 325Ci Cooling System Service Kit
Body: Convertible, Transmission: Automatic
2003 BMW 325Ci Cooling System Service Kit
Body: Coupe, Transmission: Automatic
2004 BMW 325Ci Cooling System Service Kit
Body: Convertible, Transmission: Automatic
2004 BMW 325Ci Cooling System Service Kit
Body: Coupe, Transmission: Automatic
2005 BMW 325Ci Cooling System Service Kit
Body: Convertible, Transmission: Automatic
2005 BMW 325Ci Cooling System Service Kit
Body: Coupe, Transmission: Automatic
2006 BMW 325Ci Cooling System Service Kit
Body: Convertible, Transmission: Automatic
2006 BMW 325Ci Cooling System Service Kit
Body: Coupe, Transmission: Automatic

BMW 325i
2002 BMW 325i Cooling System Service Kit
Transmission: Automatic, From 9/2002
2003 BMW 325i Cooling System Service Kit
Engine code: M54, Transmission: Automatic
2004 BMW 325i Cooling System Service Kit
Engine code: M54, Transmission: Automatic
2005 BMW 325i Cooling System Service Kit
Engine code: M54, Transmission: Automatic

BMW 325xi
2002 BMW 325xi Cooling System Service Kit
Transmission: Automatic, From 9/2002
2003 BMW 325xi Cooling System Service Kit
Transmission: Automatic
2004 BMW 325xi Cooling System Service Kit
Transmission: Automatic
2005 BMW 325xi Cooling System Service Kit
Transmission: Automatic

BMW 330Ci
2002 BMW 330Ci Cooling System Service Kit
Transmission: Automatic, From 9/2002
2003 BMW 330Ci Cooling System Service Kit
Transmission: Automatic
2004 BMW 330Ci Cooling System Service Kit
Transmission: Automatic
2005 BMW 330Ci Cooling System Service Kit
Transmission: Automatic
2006 BMW 330Ci Cooling System Service Kit
Transmission: Automatic

BMW 330i
2002 BMW 330i Cooling System Service Kit
Transmission: Automatic, From 9/2002
2003 BMW 330i Cooling System Service Kit
Transmission: Automatic
2004 BMW 330i Cooling System Service Kit
Transmission: Automatic
2005 BMW 330i Cooling System Service Kit
Transmission: Automatic

BMW 330xi
2002 BMW 330xi Cooling System Service Kit
Transmission: Automatic, From 9/2002
2003 BMW 330xi Cooling System Service Kit
Transmission: Automatic
2004 BMW 330xi Cooling System Service Kit
Transmission: Automatic
2005 BMW 330xi Cooling System Service Kit
Transmission: Automatic

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