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X3 E83 (2004 - 2010)
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Old 11-17-2010, 05:10 AM
alandelucia alandelucia is offline
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Location: Highland NY
Join Date: Aug 2009
Posts: 74
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.
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6.) Remove plastic access panel to the left of the brake fluid Reservoir.
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7.) Remove intake valve. (see pic). There are (2) t30 torx holding it in.
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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.
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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.
12.) Re-assemble
13.) Clear OBD2 codes

Good luck. 2 hours will save you $300
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