Review on MTC 4683 Check Valve 058133785B by Justin Miller

The first thing that struck me when I received this part was the marks of someone's hand covering the excess Rubber removed while molding process was turned off. That means someone has already held it in their hands, inspected it for imperfections, cut off the excess adequately so I didn't have to, and sent it to be shipped. To be honest I'm so used to getting molded parts and breaking out a pocket knife to cut pieces. It's a bit more flexible than I thought it would be, but it's easier to install and I only have the old rotten one to compare, so OE might be just as flexible. All round good quality and worth the money. If you have an Audi or VW 1.8T you will need to replace this part if you haven't already if you want to get the fuel economy back and let's be honest with a premium you want extra mileage. return.