A few days ago I added the center radiator "upgrade" to my '99 C2 and it was definitely well worth it.
The car is running noticeably cooler, here's a pic after driving for about a half hour after dropping my daughter off at the airport.
the needle used to sit part way into the 0 and around town on warm days it would creep up to just past the 0.

 

Good info, where did u buy the "kit" or did u piece it? Is it a bolt on upgrade or modification needed for a 996 oem bumper

 

I was lucky enough to find a used one on ebay, came with everything but the hoses.
It bolts right up, all the 911's and Boxters have the mounting point's already.
Porsche used the same radiator for the Tiptronic, Turbo, GT3 and I believe the Boxter S.
The only difference being the ductwork.
Mine came off a wrecked 996 Tiptronic.

 

I want to do the same mod on my 2000 996 with manual shift.
What else except the radiator is needed for this ?
I guess the center radiotor must be conected to both side radiators with water hoses right ?
What kind of brackets are needed to mount the radiator ?

 

Basically all you need is the factory hoses for the center radiator, they are basically the regular hoses that go to your left and right radiators but have a hose that tee's off that hose too the center radiator.
Vivid Racing sell the kit's you can go to their site and see everything that's needed and there is a great right up on Pelican Parts site that has detailed pics and instructions for the install. You need to look under the tech articles for the Boxter but it's the same for our car.
No extra brackets are needed, the frame that mounts the ducting to the radiator also has tabs that line up with the factory mounting points behind the front bumper cover.
Pretty straight forward install.
If your lucky enough to possibly find a wrecked 911 with the center radiator you would have all you need, or of course there are a few venders that sell the complete kit's.

 

If u look for a wreck, all triptronic cars came with center radiators.

 

thanx guys...

Greetz

 

I think it's this one: http://www.suncoastparts.com/product...96WaterCooling