because
It wouldnt be original engineering would it. Did you remove the center nut of the cap first? If so then the housing lifts straight off. No threads no anything. All there is is that center nut with gasket and an O-ring at the bottom keeping it sealed. My first time was rough so I spun mine by hand to break the n seal then wiggled it pulling on it straight to get it out. If you do It every 3000 miles it wont be hard next time.
Good Luck
It wouldnt be original engineering would it. Did you remove the center nut of the cap first? If so then the housing lifts straight off. No threads no anything. All there is is that center nut with gasket and an O-ring at the bottom keeping it sealed. My first time was rough so I spun mine by hand to break the n seal then wiggled it pulling on it straight to get it out. If you do It every 3000 miles it wont be hard next time.
Good Luck