X3 Pump Hanger vs PTFE Plumbing Kit for F-150 Lightning

Two parts, two jobs in the same upgrade

The DeatschWerks X3 Fuel Pump Hanger and the X3 Series Pump Hanger PTFE Plumbing Kit are both listed for the 1999-2004 Ford F-150 Lightning, but they are not interchangeable versions of the same purchase. The hanger is the mounting and support piece for the fuel pump. The PTFE plumbing kit is a line set that pairs an -8AN feed with a -6AN return for the X3 Series Pump Hanger.

That distinction matters before you order: one part addresses how the pump is held and aligned, the other addresses how fuel is routed to and from it. Whether you need one, the other, or both depends on what you already have and what your build requires.

What each part actually covers

• X3 Fuel Pump Hanger: Fits 39 mm and 46 mm fuel pumps for 1999-2004 Ford Lightning F-150. Described as a direct-replace OEM hanger that uses existing mounting hardware with no modifications required. It provides stable positioning to reduce vibration and keep the pump aligned.
• X3 Series Pump Hanger PTFE Plumbing Kit: A PTFE plumbing kit for the X3 Series Pump Hanger with an -8AN feed line and a -6AN return line. It is listed specifically for 1999-2004 Ford F-150 Lightning and is a hose/plumbing set, not a pump mount.

The pump-size question belongs to the hanger

The hanger record gives a concrete fitment range: it accepts both 39 mm and 46 mm fuel pumps. That is the specification to check against the pump you plan to run. If your pump is outside those sizes, the supplied information does not confirm compatibility, and you should verify before ordering.

The plumbing kit does not list pump sizes. Its stated fitment is the vehicle and the X3 Series Pump Hanger, along with the -8AN feed and -6AN return configuration. Treat pump-size compatibility as a hanger question, not a plumbing-kit question.

Hanger facts that affect the fit decision

• X3 Fuel Pump Hanger for F-150 Lightning: Fits 39 mm and 46 mm fuel pumps for 1999-2004 Ford Lightning F-150. This is the clearest published compatibility boundary for the hanger; check your pump size against it first.

  

• X3 Fuel Pump Hanger for F-150 Lightning: Direct-replace OEM hanger with no modifications required, using existing mounting hardware. This tells you the hanger is positioned as a drop-in mounting solution rather than a fabrication project.
• X3 Fuel Pump Hanger for F-150 Lightning: Provides stable positioning to reduce vibration and keep the pump properly aligned. Alignment and vibration control are the functional reasons to replace a hanger, beyond simply holding the pump.

The plumbing kit is a line-size decision

The PTFE plumbing kit is defined by its line sizes: -8AN feed and -6AN return. Those sizes are part of the product identity, not a variable you select within this listing. If your fuel system is built around different line sizes, this kit is not the matching part, and the supplied information does not describe adapters or alternate configurations.

The kit is also tied to the X3 Series Pump Hanger. That pairing is the compatibility anchor in the record. It does not, by itself, confirm fitment to other hangers or to a stock setup.

Plumbing kit facts that affect the line decision

• X3 Series Pump Hanger PTFE Plumbing Kit for 1999-2004 Ford F-150 Lightning: Pairs an -8AN feed line with a -6AN return line in a PTFE plumbing kit configuration. These are fixed line sizes; confirm they match the rest of your fuel system before buying.

  

• X3 Series Pump Hanger PTFE Plumbing Kit for 1999-2004 Ford F-150 Lightning: Designed for the 1999-2004 Ford F-150 Lightning and listed as a PTFE plumbing kit for the X3 Series Pump Hanger. The vehicle and hanger pairing is the stated compatibility scope; it is not a universal hose kit.

How to choose between them

• Start with the hanger if your pump mounting is the weak point: If you are replacing a worn or modified hanger, or need to confirm 39 mm/46 mm pump support, the hanger is the part with the relevant evidence. Its direct-replace OEM description and existing-hardware installation are the practical points to weigh.
• Choose the plumbing kit when your line routing is the missing piece: If you already have the X3 Series Pump Hanger and need -8AN feed and -6AN return PTFE lines for it, the plumbing kit is the matching part. It does not replace the hanger.
• Do not assume one purchase covers both: The records describe two separate products with separate functions. The hanger mounts and aligns the pump; the kit routes fuel lines. Neither record states that the other is included.
• Check the gaps before you commit: The supplied information does not list hose lengths, fitting angles, pump flow ratings, or installation steps for either part. If your build depends on those details, confirm them separately rather than inferring them from this comparison.

Where the catalog evidence stops

Both records are clear about vehicle fitment and their core function, but they are not installation guides. The hanger record confirms no modifications are required and that existing mounting hardware is used, but it does not give a torque sequence or a step-by-step procedure. The plumbing kit record confirms line sizes and hanger pairing, but not routing length or hose-end configuration.

That is not a reason to avoid either part; it is a reason to treat this comparison as a fit-and-function check. Use the hanger to settle pump-size and mounting questions, use the plumbing kit to settle line-size and hanger-pairing questions, and verify anything the records leave open before you order.