SPD fuel rail - Volvo 6 cyl SPD fuel rail offers the market's best flow with an internal drill of 20mm and AN10 connections. This large drill not only provides a better flow but also different calm in the rail, which means that there will be less pulses that adversely affect the injectors. A big difference between this fuel rail and others on the market is that it is not made from a standard fuel rail subject but this rail is billet made! The fuel rail also comes with an AN6 output at the bottom which can be used as a return line, pressure measurement etc. There are also finished threaded holes to facilitate mounting of the brackets. These mounts can be connected from either side. The Fuel rail is made of aluminum and it is hard anodized for the best wear protection and is compatible with all fuels on the market. - Best flow on the market - Mounting details and adapters included. - Compatible with Gasoline, E85 and methanol -It is possible to run dual feed. -AN10 connections on the sid