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What is the nipple on the top called/for I can’t find it anywhere on the internet and I know I found it a while ago just forgot what it was called….thanks In advance
19552
 

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That is where the bellows attaches to, also where the oil is added to lube jetdrive bearings. The bellows displaces the “so-called” air pressure produced when your machine starts hitting the 3500-7200 rpm. range to prevent air pressure on seals possibly failing those seals. Arctic cat also puts those bellows on underside of magneto housing for same reason( air displacement). If your unsure where to find a bellows or oil adding /draining just let us jetheads know
 

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Here is a photo i took of one i got off ebay last november,i
Automotive tire Line Font Auto part Engineering
think part# is listed on botton of it. Make sure you don’t overadd oil to the jetdrive housing either.
 
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