Join Date: Jan 2009
Location: Mendocino, CA, USA
Yep, am in agreement with H96669, crank case breather hose. There are a couple of ways to remove and replace....last time I only did the large portion that you can see and used long needle nose plyers, long screw driver, etc. and went in on the right between the frame and the crank. PITA, but easier than doing the whole thing. About a year ago the whole section was a $78 part. It has a special molded 4 nippled hose for the throttle body connections and pretty much requires the crimped clamps there vs screw clamps. The molded section then snakes over to a poly tube that the piece you show then clamps onto, it is part of the 'whole'. That larger piece was nicked by a mechanic the last time it was replaced...eventually it split. If the large portion or the individual throttle body connections split you get two less than desireable results. You loose some of your vacume at the throttle bodies, but probably more noticable is the oil that begins to puddle on your engine or even spill down the side by the exhaust. All depends on how bad the split is and how long it goes unnoticed. Replacing from the crank side (rider's right) is only the short piece of large hose - PITA but doable with the right tools, no fun. From the head-side (rider's left) is more involved with removing the airbox, but technically fewer gymnastics in small places, physically less difficult. Having done it before, I knew I did not have the right tools to do the throttle body connections, but I had oil puddling and had to take care of it. Not sure what they would charge to replace at the dealer, but now you know what it is.
'00 K1200RS >135,000 mi, '09 K1300S sold @ 22,232 mi
'93 K1100RS traded up @ 78,000 mi, '85 K100RS sold @44,000 mi, Kawi 650 track bike - sold