I know it works on the Via, the Hydor L20, the Hydor L30, and the Swiftech. Basically most of the pumps of this type are constructed the same. I looked at a Maxijet in an aquarium store, and it looked to be the same construction which would imply it would work, but no promises.
The quick check would be taking the front off, and seeing if the impellor has "play," i.e. without the "drive shaft" (I can't remember what pump parts are called, but the thingy with the magnet on it, not the spindle) moving, then the fix should work.
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