The FD4615 name is commonly used when shopping for a dual-stage fuel filter service kit for certain early 6.7L Power Stroke trucks. That part number is useful, but it should never be the only piece of information used to order a filter. The truck's model year, engine, original filter arrangement, and reference numbers all need to agree.
This guide focuses on the 2011–2016 Ford Super Duty applications listed on the Vypart product page. It explains what the kit contains, how the two filtration stages differ, how to avoid confusing it with later-model kits, and what to check before and after installation.
What is included in an FD4615-style kit?
The kit is designed around two service locations:
- A frame-mounted primary fuel filter and water separator
- An engine-mounted secondary fuel filter
- The sealing rings needed for the listed installation
The frame-mounted stage helps manage water and larger contaminants before the fuel moves farther through the system. The engine-mounted stage adds filtration before fuel reaches downstream components. Replacing both during the same service helps avoid leaving one restricted filter in the system.
The Vypart FD4615 fuel filter kit for 2011–2016 Ford 6.7L Power Stroke trucks is listed with both filters and required sealing rings. It is an aftermarket replacement product and is not manufactured or sponsored by Ford or Motorcraft.
Listed vehicle applications
The product page identifies these applications when equipped with the 6.7L Power Stroke diesel engine:
- 2011–2016 Ford F-250 Super Duty
- 2011–2016 Ford F-350 Super Duty
- 2011–2016 Ford F-450 Super Duty
- 2011–2016 Ford F-550 Super Duty
Do not apply this model-year range to a truck solely because it has a 6.7L badge. Filter configurations changed across generations. The listing specifically notes that FD4615 is different from the FD4624-style kit used on many 2017 and newer applications.
Reference numbers and fitment clues
The Vypart page lists FD4615, BC3Z-9N184-B, BF9895 KIT, DF4615, F76160, and 33615 as reference numbers. These identifiers help compare a new kit with an old filter, maintenance invoice, or parts catalog.
Use the following checklist before ordering:
- Confirm the truck is a listed 2011–2016 F-250, F-350, F-450, or F-550.
- Confirm it has the 6.7L Power Stroke diesel engine.
- Compare numbers on the removed filters or trusted service records.
- Compare the filter shapes, caps, ports, and sealing surfaces.
- Verify which components, sensors, or drains are reused.
- Check that the kit includes the seals required by the service procedure.
Photographs can support the comparison, but appearance alone is not proof of fitment. Small differences in dimensions or sealing surfaces can matter.
When should the fuel filters be inspected or replaced?
Use the maintenance schedule and information provided for the exact truck. Operating conditions can change service needs. Frequent towing, long idle periods, dusty work sites, fuel-quality concerns, and water-in-fuel warnings all deserve attention, but they do not create one universal interval for every truck.
Possible signs of restriction or contamination can include difficult starting, reduced power, uneven running, or warning messages. Those symptoms have many other causes, so they should lead to diagnosis rather than automatic filter replacement. A scan, fuel-system inspection, and service-history review may be needed.
Prepare before opening either housing
Fuel-system cleanliness begins before the old filter is removed. Wash or wipe away dirt around the frame-mounted assembly and the engine-mounted housing. Use clean tools and keep new filters protected until installation.
The frame-mounted assembly may retain diesel fuel and water. Prepare an approved drain container and follow the service procedure for draining before loosening the housing. Wear appropriate eye and hand protection, work in a ventilated area, and keep ignition sources away.
Review the complete procedure before starting. It should identify access points, removal steps, seal locations, tightening instructions, priming steps, and leak checks. If the work requires lifting the truck, use equipment and support points specified for the vehicle.
Replacement workflow: focus on cleanliness and orientation
A general dual-filter workflow looks like this:
- Verify the kit and compare both new filters with the original parts.
- Clean the exterior of each filter housing and surrounding area.
- Drain the frame-mounted separator as directed.
- Remove the old filter without introducing debris into the open housing.
- Remove every old O-ring and inspect its groove.
- Install the specified new seals using the approved preparation method.
- Seat each new filter in the correct orientation.
- Reassemble and tighten components according to the service manual.
- Prime the system using the vehicle-specific procedure.
- Start the engine and inspect both service locations for leakage.
Do not use compressed air, dirty shop towels, or unapproved chemicals inside the housings. If contamination enters an open fuel passage, clean it only using the method authorized by the service information.
Four avoidable installation errors
Mixing early and later 6.7L kits
An early FD4615-style kit and a later-generation kit may both be described as 6.7L Power Stroke fuel filters. The engine name is not enough. Match the model year and physical configuration.
Leaving an old seal behind
An old O-ring can remain in a groove and create a double-seal condition when a new ring is installed. Confirm each old seal is removed and each new one is placed in the correct groove.
Forcing a filter or cap
If a component does not seat naturally, stop. A misaligned filter, pinched seal, cross-threaded cap, or wrong part can be damaged by additional force.
Skipping the final leak inspection
A truck that starts is not automatically ready to drive. Observe the frame-mounted and engine-mounted locations with the system operating, then recheck after a short drive when safe.
What if the truck is a 2017 or newer model?
Do not assume FD4615 remains correct. Many later 6.7L Power Stroke applications use a different kit. Locate the truck's full build information and compare the original filters and current catalog data. If the vehicle falls outside the product page's stated range, select a verified later-model application instead of adapting this kit.
Make fitment the first maintenance step
Successful diesel filter service begins before the hood is opened. Confirm the year, engine, filter arrangement, and part-number references. Then follow the exact service procedure for draining, sealing, tightening, priming, and leak inspection.
The full Vypart fuel and motor oil collection separates available kits by diesel engine family and model-year range, making it easier to compare before ordering.
Safety note: Diesel fuel is combustible, and fuel-system work can involve hot components and retained pressure. Follow the vehicle manufacturer's instructions, use suitable protective equipment, and consult a qualified technician if fitment or service steps are uncertain.