A fuel surge tank (FST) is designed to prevent fuel starvation to the engine on vehicles with inadequate fuel tank baffling. The FST fuel pumps feed the fuel rail(s). The volume of fuel inside the surge tank acts as a buffer to always keep the FST pump supplied with fuel. This volume is maintained by the main fuel tank's pump as well as the fuel returning from the fuel pressure regulator. Excess fuel in the surge tank is returned back to the vehicle's main fuel tank. The surge tank also provides a quick and easy way to upgade any standard fuel system with a compact size. This is an excellent fueling solution for vehicles installing large demand power upgrades such as forced induction.  Both of these dual-pump configurations are ideal for high powered V or H configured engines with dual fuel rails. The anodized 6061 billet aluminum clamps and FST mount directly to the powder coated aluminum plate using stainless countersink bolts. Unlike others on the market, these clamps conductively transfer the fuel pumps thermal energy to the chassis increasing fuel pump longevity. Each pump has a dedicated vapor shield hose that draws fuel from the bottom of the FST.  Includes -Machined 6061 Aluminum 1.5 Liter Canister-Removeable Billet 6061 Aluminum Caps    -6AN Male Fittings -Adapter Fittings for specified Fuel Pumps-Billet Aluminum Pump Clamps-Aluminum Mounting Bracket-Stainless Steel Hardware NOT COMPATIBLE WITH AEM 50-1005 or DW350i L pumps.   Instruction PDF