Hello,

This evening after work, out of the blue, I decided to take the fuel distributor and plenum off the M103. This involved by first removing the fuel injector metal lines and then other various fuel connections, a vacuum line, and an electrical connector, etc.

To replace the intake boot, do I need to separate the two halves of the assembly that the fuel distributor sits on? The old boot is pretty stiff and definitely should be replaced. The injectors are original and probably shot, but I will keep them as spares. Should I replace the gasket that the throttle body sits on? What else besides all now easily accessible vacuum lines?

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2006 BMW M5 "Heidi" @ 109,000 miles
2005 MBZ C55 AMG "Lorelai" @ 165,000 miles
1991 MBZ 300E "Benzachino II" @ 165,000 miles
1990 MBZ 500SL "Shoshanna" @ 118,000 miles

(On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!)