The Hybrid Racing Tucked fuel line kit was designed for those people looking to clean up there engine bay and eliminate the OEM fuel filter off of the firewall. The kit routes the fuel lines between the number 2 and number 3 runners and hugs the transmission as it makes its way to the regulator which you will mount by the battery. This kit only works with the Hybrid Racing Fuel rail which has the necessary port in the center of the rail. So why do you need a fuel line kit? Well the K-Series engine in the OEM chassis has a return less fuel system (it only has one line running to the rail) . The new chassis that you plan on installing your K series engine (in this case EF,EG,EK,DC etc) utilizes a return system. So to get fuel to your K-Series engine your going to need to retro fit a return system to the engine. It sounds complicated but we have made a few different fuel line kits that are 100% bolt in. What chassis is this kit for? This kit fits all 88-2000 Civic's/Delsol's and all 94-2001 Acura Integra's. What does this kit come with? This kit consist of 4 custom length lines with the appropriate fittings on the ends.The lines are made of high quality black neoprene and get the job done perfect. The kit also comes with 3 -6AN unions, an adapter to connect to your OEM fuel filter and an adapter to connect to your hard line. Pipes are made to mount the regulator on the passenger side suspension turret. Why shouldn t I make these lines myself and what makes them better? Since the hoses will be carrying fuel back and forth to your engine we have the lines assembled and pressure tested by an Aeromotive authorized dealer who uses equipment selected and certified by Aeromotive to ensure the best quality Assembly and Performance. They also pressure test the lines to ensure there are no leaks which can lead to fires and or engine failure. In addition all of lines come with a lifetime warranty. If you have a leak or problem send it back to us for a no hassle repair. We stand behind each one of our products and are 100% positive that you will have no problems with our fuel line kits. Each Hybrid Racing product comes with a money back guarantee so if your not happy call us and we will make sure you are. INLINE FUEL FILTER PICTURED IS INCLUDED IN THE PRICE. PLEASE CHOOSE FROM THE OPTIONS MENU FOR COLOURS.