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Air and Fuel› Fuel Pumps, Regulators and Components

FASS

5/8 Inch Convoluted Suction Tube Upgrade Kit

$75.00 $71.25 Save $3.75

SKU: STK1003B

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In Stock
Ships by Aug 2
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The FASS STK1003B is a 5/8 inch convoluted suction tube upgrade kit designed to enhance your vehicle's fuel delivery system. This kit serves as an upgrade to existing bulkhead fittings, allowing it to draw fuel directly from your factory fuel basket. By increasing the suction tube size and using the fuel basket as the primary suction point, the STK1003B effectively eliminates the common "quarter tank" fuel pickup issue. The larger 5/8 inch suction tube port and its design that pulls fuel from the factory fuel basket work seamlessly with higher volume fuel systems, ensuring consistent fuel supply. The kit is compatible with universal applications, as well as Ford Powerstroke, GM Duramax, and Dodge Cummins vehicles. It is important to note that the STK1003/1003B kit will not work on 2003-2004 Dodge applications.

MIA's Description

The FASS STK1003B is a 5/8 inch convoluted suction tube upgrade kit designed to pull fuel from your factory fuel basket. This kit increases fuel volume and eliminates the common quarter tank issue by utilizing the factory fuel basket as a suction location. It upgrades existing bulkhead kits and is compatible with Ford Powerstroke, GM Duramax, and Dodge Cummins applications.

Fitment

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Specifications

BrandFASS
Part NumberSTK1003B
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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