The ones from the dealer will be the three white ones. As for doing the fourth, it was easy for my MB mechanic to do and he re-did the clips that hold the fuel rails in place on top of the intake (the get old, brittle, and allow for rubbing of the metal lines). But as the intake was off, we noticed that I needed a new wiring harness as the original one is biodegradable (brilliant), so the total tab was obfuscated by the price of the wiring harness. Taking off the intake for a good mechanic is as simple as putting air in the tires.

You don't need to order anything else really, just get those three lines and have at it. It takes a little contorsioning with the intake on, but it's very doable. I did it.

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- Brian


1989 500SEL Euro
1966 250SE Cabriolet
1958 BMW Isetta 600