I fail to understand "cold air system" when you install it you are disconnecting the original air scoop which takes in cold air from the front of the grill and putting in a cone filter which draws hot air in from under the hood ????

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1988 325is (purchased new) sold
2004 X5 3.0 2005 X3 2.5
2008 X5 3.0 (new to me)

Not 100% positive. The manual only lists 4.4 and 4.6. Maybe someone else can chime in

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2004 BMW M3 Individual
2009 BMW E70 X5 35d
2011 BMW E70 X5 35d - Totaled
2009 BMW M3 E90 - SOLD
2006 E53 X5 4.8iS - SOLD
2002 E46 M3 Convertible - SOLD
2006 E46 M3 ZCP - SOLD
2011 E70 X5 35d - SOLD
2000 E39 ///M5 - SOLD
2003 E53 X5 4.6iS - SOLD
2006 E83 X3 3.0i MSport - SOLD
2000 E46 323Ci - SOLD

It's sealed (mostly) from the underhood heat. It pulls in cold air from the fender well area cutouts.

FWIW, I have a Dinan CAI installed on my 4.8is... not sure if it's the same part number as pictured here though.

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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)

2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)

The Dinan system includes a cold air box. The cone filter is in the box keeping the engine heat away from the intake tube. The system increases the volume and velocity of incoming air. Dinan printed gains have always been conservative. The 4.4 gain is 13HP and 12TQ. The 4.6 is 14HP and 11TQ. To reach these numbers you need the matched engine software which further increases performance gains as do the Dinan MAF and throttle body if you can find them. With the above components plus the free flow exhaust the total gain on the 4.4 is from 282HP to 321. The torque increases from 335 to 350. The 4.6 from 340 to 369 and 371 to 382.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas

I would check with Dinan to be sure.

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X5 4.6 2002 Black Sap, Black interior. 2013 X5M Melbourne Red, Bamboo interior
Dallas