I gotta say, this simple device is extremely powerful, took my truck from roaring and burning oil, gas and the engine up to quietly humming along and giving me incredible gas mileage. 1986 Ford F250 6.9 IDI Automatic owner, this part worked wonders to get around the vacuum. Tim was also super helpful when I had questions. Fast shipping, quality part (repair is still fresh will update if I need to buy more to keep running after X months) but I feel like I really got my money's and peace of mind's worth. This site is keeping old badass trucks running smoothly and on the road.