FASS Suction Tube Kit
The Suction Tube Kit for FASS and AirDog high flow fuel pumps was developed to retrofit the stock fuel pickup basket assembly to eliminate the need for a new pickup tube assembly, or "Draw-Straw", on trucks with in-tank equipped fuel pumps. This kit is not a replacement module, it is an upgrade kit for modifying your existing fuel module. If your 98-01 Dodge 5.9L ISB has had the "In-Tank" fuel pump conversion, then this kit will be required to install your FASS or AirDog system. On all other vehicles, this suction tube kit will prevent "quarter tank fuel starvation" issues, and allow your FASS or AirDog system to flow unrestricted at it's highest potential. This suction tube kit works with all FASS and AirDog complete systems as well as aftermarket high flow fuel pump assemblies such as the FASS HPFP & DDRP pumps and AirDog FRRP & Raptor pumps. This kit may not be required on some vehicles or certain FASS and AirDog systems. If you're unsure, then please call us before ordering.
Prevents 1/4 Tank Fuel Starvation
The stock OE fuel tank location in pickup trucks is generally along the inside of the drivers side frame rail. With space between the frame rail and drive shaft limited, the fuel tank must be narrow to fit and have clearance away from the drive shaft. Consequently, to contain the volume of fuel required, the fuel tank must be quite long. With vehicle acceleration and/or deceleration waves develop which, with a low fuel level, can cause a fuel suction tube to suck air. To overcome this problem, the vehicle manufacturers incorporate the use of a fuel module with a collection basket.
When the fuel level is low, the collection basket catches fuel as it flows back and forth. Containing fuel in the basket ensures that the engine always has a fuel supply. However, once the fuel level drops below the top of the collection basket the high flow of a High Performance Fuel System will drain fuel more quickly than it enters. This will eventually empty the basket and starve the engine of fuel. Additionally, the suction lines of the stock collection basket are too small to handle the higher flows without cavitation. To make matters even worse, some pick up truck manufacturers have chosen to locate the lift pump in the fuel tank which would block the flow and prohibit the use of the stock suction tube as it is.
This upgrade kit for the stock OE fuel module overcomes the issues above. With this fuel module modification, a high flow after market fuel system can draw directly from the fuel module without problems. The Fuel Module Upgrade Kit has all of the components necessary to convert the stock fuel module into a high flow system.
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