Motorcraft YG360 Emission Vacuum Valve

I have a 1998 Lincoln Mark VIII that never had the vacuum canister hooked up properly, The canister existed but did not store vacuum. It turns out that the way it was hooked up, the check valve (the factory one is small and the replacements don't work half the time) was hooked directly to the AC/Heater unit rather than between the vacuum canister and the vacuum source. This unit works solidly, the tiny ones that Dorman sells for this car, often do not work, the little flap doesn't seal. With this one, it works every time all the time. I no longer have my AC start going out the defrosters on hills nor have to wait for a few minutes after starting the vehicle for it to shift to the correct outputs.I would recommend this purely based on if the nipple sizes will work with your tubing and nothing else. 15" of vacuum does not care whether it comes from a Ford Modular, a Chrysler Hemi or a GM LS motor. A check valve either allows one way flow or if defective, allows flow in both directions or no flow at all. This one is positive and holds it's ground.

Fit was perfect for my 2004 F150 lariat

A very frustrating rattle began a few weeks ago on my truck only when accelerating. After spending some time researching someone posted a video on the Ford F150 Owners Facebook group and the solution which was posted in that posts comments section brought me here to buy this part. It was so easy to change that a caveman could do it. I found a YouTube video on how to change it out and walla, no more rattle noise! Need to say this was the best $8 that I have spent in a while. Sure, I could have had the dealer change it, but it was so easy to do (and I am handy) that I figured I would save time not sitting at the dealer and do it myself. It took me 1 minute to do. Just make sure you put it in the color orientation as the one you take out.

This was recommended for my IWE issues. It did not resolve them and I'm not sure if it is this part or something else. It seems to work fine through testing and looks oem.

Excelente

I was having an issue on my 2015 F-150 with the front hubs not totally disengaging which could cause grinding noise especially when turning. I found online that this vacuum switch was most likely the culprit so for $8 I ordered one to give it a shot. The purpose of it is to allow air to flow one direction but block it going the other to hold in the vacuum.On the new one I tried this out sucking on one end which allowed air and then the other way which allowed nothing. Once pulling out the old one I did the same test. Ok on the side which is supposed to let air through but on the other side it was only partially blocking the air which would keep the vacuum from being as strong as it should be.Went for a test drive after swapping it out and all seemed good.

Thank you everyone, package arrived everything looks good thank you for all your help you are all awesome. Thank you very much Charles.

Checked this against the OEM one that was already installed in the truck. The previous one couldn't hold vacuum when using my vacuum test gauge. This one worked as expected. It is a Ford Genuine partVery easy to install - literally disconnect two ends and reconnect.5/5 easily