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M104 HFM Intake Rebuild
This article is a reference for rebuilding the air intake on an M104 engine NOT powered by KE-Jetronic (3.0L M104.98x). There may be slight variations due to differences between specific model years and modifications or annotations to the article to support changes should be made as they are discovered.
| Time | 2 hours |
|---|---|
| Cost | |
| Difficulty | |
| Parts Required | Intake manifold gaskets (104 141 1080, requires 6) Long lower intake hose (104 094 35 82) Short lower intake hose (104 094 36 82) Fuel injector seal (019 997 13 48, requires 12) |
| Applicable models | All HFM injected M104 engines |
Procedure
Remove air intake pipe
- Unclip retaining hooks at air box behind right headlight and remove upper lid
- Unplug both sensors along the intake pipe
- Remove valve cover screws
- Loosen upper hose clamp at throttle body boot
- Pull up on air intake pipe and remove
M104 Air Intake Pipe Removed