11-17-2010, 05:10 AM
Location: Highland NY
Join Date: Aug 2009
Mein Auto: 2003 Z4 3.0i
X3 Intake Boot replacement procedure
Symptoms: Rough Idle, Loss of power, P0171 and P0174 OBD codes
Fix: Replace Intake boot
Difficulty: 4 out of 10
Time: 2 hours
After the dealer quoted $300+ in labor to replace my intake boot, I decided to do it myself and take pictures along the way. I saw that there wasn't much out here on the process, so I figured I would add to the pool of knowledge.
According to the dealer, this boot is becoming a 100% fail item. Most 05s and 06s have come in for a repair already. They stock the part, and dont even need to look it up, its so common. After seeing how poorly it was made, I am not sure how this didnt become a recall. Paper thin natural rubber.
1.) Purchase part (~ $52) Part # 13543412292
2.) Let your engine cool.
3.) Remove Air filter entirely.
4.) Remove strut brace.
5.) Remove microfilter housing, (see pic below). There are 4 torx t30 i believe, behind the microfilter itself. Once removed, the entire assembly can be removed giving much more access to the engine area.
6.) Remove plastic access panel to the left of the brake fluid Reservoir.
7.) Remove intake valve. (see pic). There are (2) t30 torx holding it in.
8.) Remove Screw holding vaccuum hose to the engine block. Pull out of the way.
9.) You now have access to the 2 clamps holding the Intake boot. One clamp is easy (6mm bolt). The lower one is tough. I needed 1 foot of extensions, a 1/4 in drive swivel and the 6mm socket.
10.) Notice the rips in this boot. Yours should be the same.
11.) Spray some WD-40 on the ends of the new boot to avoid a fight pushing the boot on.
13.) Clear OBD2 codes
Good luck. 2 hours will save you $300