Timing Belt Idler

[ricematthews at msn.com]

>> The timing belt idler is commonly referred to as the timing
>> belt tensioner.

>It shouldn't be.  The belt is tensioned by the water pump - the
>roller (Umlenkrolle in the original German) merely serves to
>make the belt engage more teeth on the crank and cam.

I realize that the timing belt is "tensioned" (adjusted) by the water pump.
Call it a misnomer if you want to but I'm only going by what they claim to
sell you with the Blau timing belt/water pump kit.