Motorcraft FD-4596 Fuel Filter

Motorcraft FD-4596 Fuel Filter

$29.99
$29.99 $36.99
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Motorcraft FD-4596 Fuel Filter
  • Motorcraft FD-4596 Fuel Filter
  • Motorcraft FD-4596 Fuel Filter
  • Motorcraft FD-4596 Fuel Filter
  • Motorcraft FD-4596 Fuel Filter
Motorcraft FD-4596 Fuel Filter

Motorcraft FD-4596 Fuel Filter

$29.99
$29.99 $36.99

Keep your engine running strong with the Motorcraft FD-4596 Fuel Filter — the trusted OEM replacement filter for Ford Super Duty and E-Series vehicles with the 6.0L Power Stroke diesel engine.

Product Features:

  • 100% Genuine Motorcraft OEM part
  • Dual-stage filtration for superior dirt and water separation
  • Designed specifically for Ford Power Stroke 6.0L diesel engines
  • Improves engine performance and fuel efficiency
  • Direct-fit replacement – no modifications needed


Vehicle Compatibility:

Fits a wide range of Ford diesel vehicles:

  • Ford F-250 / F-350 / F-450 / F-550 Super Duty (2003–2007)
  • Ford Excursion 6.0L Diesel (2003–2005)
  • Ford E-Series Vans (E-250, E-350, E-450) with 6.0L Diesel (2004–2010)
🔍 Please verify fitment using your vehicle’s VIN or consult with your mechanic.


Cross Reference Part Numbers:

  • Fram: PS8018
  • WIX: 33899
  • Fleetguard: FS19596
  • Baldwin: BF46031
  • Donaldson: P550953
  • ACDelco: TP3012
  • Purolator: F65288
  • NAPA: 3899
  • Luber-Finer: LFF3349


What’s in the Box:

  • 1x Motorcraft FD-4596 Fuel Filter Kit
  • Includes filter, housing seals, and installation instructions

 


Fast Shipping Across the USA

All orders are processed within 1–2 business days. We ship nationwide with tracking included!

Order your Motorcraft FD-4596 today and keep your Power Stroke engine running clean and efficient.

Quality you can trust. Service you can count on.

 

❓ FAQ

Q: Where are the fuel filters located on my 6.0L Power Stroke, and how many are in the kit?

A: The Motorcraft FD-4596 kit is a complete dual-filter system that includes two distinct filters and their corresponding O-ring seals, as both must be changed together.

  • Primary Filter (Horizontal Fuel Conditioning Module / HFCM): This is a large, square-ish cartridge located on the frame rail underneath the driver's side floorboard. It houses the water separator.

  • Secondary Filter: This is a smaller, round cartridge located under the hood in the engine bay, right next to the oil filter housing.

Q: Why is it highly recommended to stick with the OEM Motorcraft FD-4596 over aftermarket options?

A: The 6.0L Power Stroke is notoriously sensitive to fuel filter design. The patented Motorcraft primary filter features a built-in water-blocking aqua-bloc membrane wrapper. Furthermore, the engine-mounted secondary filter features a precise height and a specialized top seal that interacts with a spring-loaded standpipe valve inside the factory housing cap. Many aftermarket filters are slightly too short or missing this geometry, which keeps the safety valve closed, restricting fuel flow or allowing unfiltered fuel to bypass the element entirely, destroying expensive fuel injectors.

Q: What are the exact step-by-step instructions for replacing both filters and bleeding the system?

A: Replacing the 6.0L fuel filters requires a precise order to avoid a massive mess on your frame rail and to ensure the fuel injection system is properly purged of air before cranking:

1.Drain the frame-mounted HFCM housing:Use a 6mm Allen wrench or brass plug.

Locate the horizontal fuel conditioning module (HFCM) on the frame rail under the driver's seat. Place a drain pan underneath, remove the brass drain plug, and let the accumulated water and diesel fuel drain completely. Inspect the plug for rust or debris, then re-install it securely.

2.Remove the primary frame filter:Use a 36mm socket.

Using a 36mm socket on a ratchet, unscrew the plastic filter cap on the front of the HFCM. Pull the cap and the old large filter out. Pull the old filter out of the cap, remove the old rubber O-ring seal, clean the cap threads, install the new O-ring from the kit, and snap the new large filter cartridge into the cap. Thread the assembly back into the housing and tighten it snug.

3.Remove the secondary engine filter:Use a 24mm or 15/16-inch socket.

Move to the engine bay. Unscrew the plastic fuel filter cap located next to the oil filter. Lift the cap up, snap the old small filter off, and remove the small O-ring from the cap. Clean the cap, fit the new lubricated O-ring, snap the new small filter into the cap, and lower it into the housing. Carefully thread it on by hand first, then torque it down snug.

4.Cycle the ignition to prime the system:Crucial to prevent fuel injector failure.

Do not attempt to crank the engine yet. Turn the ignition key to the "RUN" position (without cranking) and listen to the frame rail. You will hear the electric fuel pump hum and buzz as it pushes fuel and air through the lines. Leave the key on for 30 seconds until the pump stops running.

5.Repeat the priming cycle and start:Bleeds remaining air bubbles out.

Turn the key off, then back to the "RUN" position for another 30 seconds. Repeat this key-cycling process at least 3 to 5 times to completely purge all trapped air into the return system. Once the pump sounds quiet and consistent, crank the truck to start it, and check both housing areas for any leaks.

1.Drain the frame-mounted HFCM housing:Use a 6mm Allen wrench or brass plug.

Locate the horizontal fuel conditioning module (HFCM) on the frame rail under the driver's seat. Place a drain pan underneath, remove the brass drain plug, and let the accumulated water and diesel fuel drain completely. Inspect the plug for rust or debris, then re-install it securely.
2.Remove the primary frame filter:Use a 36mm socket.

Using a 36mm socket on a ratchet, unscrew the plastic filter cap on the front of the HFCM. Pull the cap and the old large filter out. Pull the old filter out of the cap, remove the old rubber O-ring seal, clean the cap threads, install the new O-ring from the kit, and snap the new large filter cartridge into the cap. Thread the assembly back into the housing and tighten it snug.
3.Remove the secondary engine filter:Use a 24mm or 15/16-inch socket.

Move to the engine bay. Unscrew the plastic fuel filter cap located next to the oil filter. Lift the cap up, snap the old small filter off, and remove the small O-ring from the cap. Clean the cap, fit the new lubricated O-ring, snap the new small filter into the cap, and lower it into the housing. Carefully thread it on by hand first, then torque it down snug.
4.Cycle the ignition to prime the system:Crucial to prevent fuel injector failure.

Do not attempt to crank the engine yet. Turn the ignition key to the "RUN" position (without cranking) and listen to the frame rail. You will hear the electric fuel pump hum and buzz as it pushes fuel and air through the lines. Leave the key on for 30 seconds until the pump stops running.
5.Repeat the priming cycle and start:Bleeds remaining air bubbles out.

Turn the key off, then back to the "RUN" position for another 30 seconds. Repeat this key-cycling process at least 3 to 5 times to completely purge all trapped air into the return system. Once the pump sounds quiet and consistent, crank the truck to start it, and check both housing areas for any leaks.

 

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