Greets. My car's having a slight idle issue when the car is idling at rest. Did my troubleshooting and narrowed it down to the FITV having a small leak - still has some suction when car's warmed up so it's not closing all the way. B16A3. Going to replace the part, but Majestic Honda has two listed:

Fast Idle Thermo Valve (FITV) listing

Both are listed as "#14" and the only differences are different product numbers and one has "(AF42C)" listed after it. Did Honda use two different manufacturers to make its FITV or am I looking at two physically different FITV's? Anybody have any idea? I just want to make sure I'm buying the correct part.

Appreciate any help.