The study of a radiator

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Anyone seen how a radiator is structured? Not me. My OE unit was taken out by a crash-for-casher. It leaked between one of the radiator's plastic tanks and the aluminum part. The radiator is quite simple. It comprises of horizontal channels, and then a tank at either end. The tank is clamped onto the radiator with a rubber gasket in between. The collision resulted in the tank-radiator joint failing producing a slow leak. The aluminium was undamaged and seemed robust.

I replaced it with a cheap £65 Mahle-Behr made in china aftermarket unit. I think the most likely difference between a cheap and expensive radiators is the size and wall-thickness of the horizontal channels. Also, the plastic tanks would probably have thinner walls on cheap units. The new unit was super light weight, but the cooling performance was completely fine for a grocery car. Unlike parts for japanese cars, the aftermarket unit had perfect fitment right out of the box. No luck this time buying from china. The shipment cost made them more expensive.

radiator.jpg



Can anyone identify the "(M)" logo of the OE unit? It should be one of the german oem's. I find it always useful to know who made what in case I need to find oem parts.
logo.jpg
 
I think it stands for: Make sure if you replace this with a pattern part you notify your insurance company.
Since when was a notification required for a pattern part? I don't remember any internet experts mentioning it.
 
DNJ never claimed to be expert, was just misreading T&C.
There, I corrected that for you. Sometimes, you just have to apply a bit of basic, common sense to what you read. If what you change on a vehicle, does materially affect the safety, handling, braking, or speed, then the insurco will have no interest at all.
 
There, I corrected that for you. Sometimes, you just have to apply a bit of basic, common sense to what you read. If what you change on a vehicle, does materially affect the safety, handling, braking, or speed, then the insurco will have no interest at all.
A lighter part increases vehicle performance, though. Also it isn't up to you to decide what is and isn't a mod. The insurer will.
 
Surprisingly, Modine is an american company. This would suggest chinese branded radiators would be closer to OEM than german Mahle-Behr. Generally, the chinese stuff are largely american tech.
 
Had a new rad. fitted to my old BMW earlier this year, aftermarket Mahle-Behr ordered from Germany by my usual supplier.

You can guess the country of origin ;)
Fingers crossed it lasts a few years.
 
Had a new rad. fitted to my old BMW earlier this year, aftermarket Mahle-Behr ordered from Germany by my usual supplier.

You can guess the country of origin ;)
Fingers crossed it lasts a few years.
Mahle-Behr is all over ebay. For the E46, there is the cheaper standard one and a premium-line one. I am guessing the materials are thicker on the premium and more able to resist bumps. Since it isn't OEM, a Nissen one might be no worse. Nissen has a single model, presumably matching the premium-line one, but has discounted offers.
 
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