This is a 4" long CM In-Line Fuel filter with our 2-5/8" long 8 micron fuel element for extra high flow. It is designed to be light in weight and simple to install and plumb. This filter is the best available. The housing is 2-3/4" diameter with a red anodized finish and have an easily removable clear anodized end cap for element replacement. Ports are 1-1/16" -12 straight o-ring.