Principal Skinr
Master
I hadn't heard of that. I will have to look that up.
Check this out....saves time and effort of routing tubing. I think my old Arctic Cat 375 ATV had these, too. I'm not sure I'm remembering correctly, though.
POLY PERFORMANCE OFF-ROAD PARTS :: Drivetrain & Differential :: Differential Housing & Accessories :: Trail-Gear Creeper Breather - Differential Breather Kit