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MOUNTING SYSTEMS

There are two basic types of mounting systems on Lycoming engines: Boss Mount and Case Mount.

If your engine has something that looks a lot like this:

You have a "BOSS MOUNT".  Order your Plane-Power alternator by specifying a model number ending in .../B.  Your alternator kit will come with a small bracket that attaches to this boss.

If your engine does not have the alternator boss in the photo above, order your Plane-Power alternator by specifying a model number ending in .../C.  Your alternator kit will come with a bracket that attaches to three of the bolts holding the case halves together.

Typical Case Mount Kit

Typical Boss Mount Kit

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