If you have been tinkering around in the cylinder head of your Baja MB165 and misplaced your breather tube, you know not just any rubber tubing will do No sir, it has to be the right size, length and thickness If you have been tinkering around in the cylinder head of your Baja MB165 and misplaced your breather tube, you know not just any rubber tubing will do. No sir, it has to be the right size, length and thickness. So specific in fact, your average hardware store just might prove a fruitless venture. Take the guess work out of finding the right size tube you need and shop with Monster Scooter Parts. This is the factory direct breather tube for use on the Baja MB165 Series (Baja Heat, Mini Baja, Baja Warrior). Do note that this is compatible with all VIN number prefixes except LUAH.