HAS BEEN MENTIONED THAT IT WOULD BE A GOOD IDEA TO REPLACE THE TENSIONER WHEEL PULLEY THINGAMABOB ALSO AT THIS TIME.  OK DOES $55.00 SOUND EXPENSIVE FOR THIS PART OR DID I ASK FOR THE WRONG THING..LIKE MAYBE PRICING WHOLE ASSEMBLEY INSTEAD OF JUST THE WHEEL ...OR IS IT THE WHOLE THING THAT NEEDS REPLACING    CLUELESS IN NY    GOOD THING MY NEIGHBOR IS THE CHIEF MECHANIC & I'M JUST THE GOPHER   BUT HE HASN'T BEEN HOME TODAY..WE WERE GONNA DO SOME WORK TODAY..REAR BRAKES ...VALVE COVER GASKET..PVC VALVE....LUBE FRONT BRAKE SLIDES FROM THE INFO I GOT HERE LAST WEEKEND...THANKS...& DO THE TIMING BELT & WHEEL THINGAMABOB    .........I HAD TO GO TO 3 PARTS STORES TO GET ABOVE MENTIONED ITEMS...GOT TO ORDER  THAT  :-/ ..... WAS A RECURRING THEME OF THE DAY   ...BUT NO ONE HAD THE WHEEL THING ($55.00) OR THE O RING FOR THE DIST. BUT ITS NOT LEAKING THAT I'M AWARE OF BUT FOR .99  WHY NOT.....  THEY  HAD TO ORDER ..YET TO DO....NOW TO TOP IT ALL OFF I THINK THE CLUTCH IS STARTING TO GO.......CHATTERING WHEN I  TAKE OFF, WHEN I'M CITY DRIVING ( VERY RARE THANK GOD )  ......... MATTY D.  

i just bought one last week.  $55 is a pretty good deal from what i could tell around here.  i paid $57.  and yes it is just the

TENSIONER WHEEL PULLEY THINGAMABOB

 which is really all there is to it.   use the small back plate and spring you already have on there.