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Old 11-17-2012, 11:35 AM
tevieray tevieray is offline
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Location: Ohio
Join Date: Oct 2012
Posts: 10
Mein Auto: Z3
2.5 Radiator Leak

Ok - Noticed a slight "drip" at my coolant recovery inlet on my 2001 2.5i. That's when I realized the coolant line that runs to the recovery tank had been replaced with a generic coolant hose. So I called my local dealer to order the right hose. Then went to the local auto parts store to get a better hose clamp (the one that was on it appeared to be "slipping"). Installed new hose clamp to hold it until the new hoze arrived - then started the engine to check for additional leaks. That's when I noticed a hairline crack in the housing directly above that hose connector... (there's a "flat" area) ...and it's now leaking more than ever!

So I assume that means I need a new radiator? And I'm completely shut down 'til I get one?

I got on line and I see prices all over the place... Car-Stuff has a "Silla" for $95. Bavauto has what appears to be OEM for $285. ****************** has a "Spectra-Premium" for $213, PartsGeek has an "Action Crash Parts" for $183.

Is there a difference? Anyone have any experience with this? ...or others? Any advise would be helpful.

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Old 11-17-2012, 03:15 PM
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Pinecone Pinecone is offline
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Location: Maryland
Join Date: Apr 2002
Posts: 10,479
Mein Auto: M Roadster/M3
How many miles on the car?

This is common around 100K or so miles.

You can go with the plastic tank style radiator and it will last another 100K, or something like the Zionsville Aluminum radiator that will last longer, but it a bit more expensive.

If you haven't done it, probably a good time to replace the thermostat housing and the water pump.
Terry Carraway

'95 Alpine M3 LTW
'00 Dakar M Roadster
'02 Topaz M3
Red/White SRF #4 (Chassis 561)
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Old 11-17-2012, 03:24 PM
tevieray tevieray is offline
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Location: Ohio
Join Date: Oct 2012
Posts: 10
Mein Auto: Z3
z3 2.5 Radiator Leak

Thanks Terry... Yeah actually it has about 96k miles. So I guess I'm due. Do you see anything wrong with just getting one of the cheaper "Silla's"? I also saw some aluminum ones on eBay for about $175. 2 walls? Would that actually improve things?

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Old 11-18-2012, 05:05 PM
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morrieschoice morrieschoice is offline
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Location: birmingham,al
Join Date: Oct 2006
Posts: 533
Mein Auto: 2001 3.0 Z-3 ROADSTER

Sometimes cheaper is not always the best way to go...might cost you more in the long run. I recently purchased my cooling parts for my 2001 3.0 Roadster from Bimmerzone.com..real easy people to deal with and the best prices for the cooling parts. They totally stand behind their parts. I know for sure. I purchased the BMW radiator, water pump, thermostat housing, & upper/lower belts. Consider the uppper radiator brackets if the existing brackets break plus the expanding rivits that fasten the radiator to the frame. Be sure to get a water pump with a metal impeller (several choices). I paid $0 shipping charges. Hint: make sure you follow proper drain/fill procedures when doing the cooling system. They also have the aluminum radiator if that is your choice. Hope this helps & best of luck.

Last edited by morrieschoice; 11-18-2012 at 05:10 PM.
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