There are 2 styles. the pics are of the newer one. if you have the older style you will see a 3/4 inch "nut" cast into the bottom of the black plastic standpipe,and you will not have the 2 torx headed screws. that stand pipe it LEFT HAND thread. While cleaning, check the screen that covers the port going to the fuel pressur regulator. they will get clogged and restrict flow and affect preformance. Barney