I have never seen one with left handed threads. Counterclockwise to remove clockwise to install.
The PH2 is the new 22mmx1.5 thread that is used on the 2008+ cars with metric filter threads.
It could be a difference in thread patterns. If the oil filter has the wrong thread pattern for your vehicle, it could come loose and and you could lose your oil.
The Thread size is 18X1.5 MM Recommended filter is Wix Filter # 51040
wrong filter with wrong thread pattern.
Why would you want to know the size of the thread on the oil filter? All spin on filters have rolled threads and as long as you buy a filter that is made for your car it will fit. You don't need a wrench to fit the threads just spin the filter on and off.
1/4" NPT
You don't. Just buy a new filter that will have good threads.
That threaded nipple is removable, replace it.
3/8 pipe thread
I have a 1986 Suzuki 700 Intruder and a Fram PH6018 oil fliter does not fit it ... This filter has a 24mm fine thread mount and mine is closer to 18mm fine thread
Yes you can, just remove the oil line fittings above the oil filter and take them to a hardware store and tell them you need 2 pipe thread plugs the same size as the fittings that you removed, and some thread tape. Rap plugs with tape and screew them into the oil filter adapter tight. And it will be by-passed.
twist the old one off, make sure the rubber seal came off with the old filter. Then rub some oil on the new filter, and thread the new one on the motor.