The fuel pump should be mounted with the outlet above the inlet. This will help with eliminate vapor lock issues. Never located the pump so the outlet is below the inlet. Horizontal mounting will not effect fuel delievery performance.

You can find the Facet part number located on Solid State and GOLD-FLO fuel pumps stamped on the mounting bracket, with two or three numbers on each side of the bolt hole. This number usually starts with a 40...
The Posi-Flo and DURA-LIFT fuel Pumps have the full part number dot-peened on the black housing.

All Facet low pressure fuel pumps 12v or 24v require an 5 Amps source to perform correctly. The DC average is 1.4 amps.

We recommend you install a 3AMP fuse to every installation.
Yes, All our low pressure fuel pumps can pump Gas or Diesel fuels.

We recommend that you mount the fuel pump no more that 12 inches from the fuel supply (gas tank). All our Electronic fuel pumps will push fuel rather than pull fuel. Some pumps only have suction limit of 12 inches, therefore you should mount as close as possible to the tank.

Our installation instructions for the Low Pressure Solid State Fuel Pumps recommends to also install an oil-pressure switch. However due to the fact that this oil pressure switch has been discontinued and is hard to find, when you install a Facet pump on a vehicle use a source that is controlled by the ignition switch so power is cut off when the engine is off.

Our pump are designed to operated in ambient temperatures of -40F to 180F.

Due to the differential pressure between the interior area of the filter and the exterior area (between filter OD and bowl) and the sealing qualities of the upper filter gasket, you may observe a difference in the height of the fluid in the bowl of our pump. In addition, any other variable that affects the differential pressure will also affect fluid height, i.e. partially clogged filter. The more the differential pressure the lower the level in the bowl.
In any case, the fluid height cannot be higher than the pick-up, and the pick-up of the pump is 1/2 lower than the top of the filter and bowl. In a worse case scenario, the fluid is always traveling through the filter for proper filtration.