So I searched and found out that the MD194136 PCV valve seems to be a substitute for the original 1320180029 part number. I say that since looking at some ads for 1320180029 show the MD194136 as what you will be getting. Then searching the MD194136 part number which seems to also be expensive and not easy to source I got the 1220410030 which seems to be related. With the 1220410030 part number I got into different Toyota models that use it and saw the Wells WVE 6P1196 which was a nice red color was an equivalent. So to me the inexpensive WVE 6P1196 might be a substitute for the expensive and hard to source 1320180029.
Also has anyone tried the AliExpress 1320180029 part which is black and grey and clearly not OEM.
Also has anyone tried the AliExpress 1320180029 part which is black and grey and clearly not OEM.