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Genuine Motorcraft • New • OEM • Current Part Number Motorcraft FD-4647 Fuel Filter & Water Separator Ford 6.7L Power Stroke Turbo Diesel — F-250 • F-350 • F-450 • F-550 Super Duty — Replaces FD-4625-AA & FD-4641 Fits: 2017–2024 Ford Super Duty F250 / F350 / F450 / F550 with the 6.7L Power Stroke V8 Diesel engine. Use the fitment chart above or verify by VIN before ordering.
Protect your engine — replace with Motorcraft. This is a brand new, genuine Motorcraft FD4647 diesel fuel filter and water separator, the latest OE part number from Ford for the 6.7L Power Stroke fuel system. The FD-4647 is Ford's current, updated replacement for the earlier FD-4625-AA, FD-4641, and FD-4646 filters — if your truck currently runs any of those numbers, this is the correct, up-to-date part.
The 6.7 Powerstroke's high-pressure common-rail injection system operates at extreme pressures with very tight tolerances. Even microscopic dirt, rust, or water in diesel fuel will wear the high-pressure fuel pump and injectors — repairs that can easily run into the thousands. This Motorcraft filter traps those contaminants and separates water from the fuel before it ever reaches those components, exactly the way the factory-installed filter did on day one.
Built to strict Motorcraft standards with premium OE filter media, a durable housing, and a precise drop-in fit. No adapters, no modifications, no guesswork — the same quality and performance you expect from the Ford Motorcraft name, trusted by dealership technicians, fleet operators, and DIYers alike.
Why Choose This Filter 🛡 Protects Your Engine Removes dirt, debris, and water from diesel fuel, protecting the high-pressure injection pump and injectors — the most expensive parts of your fuel system. ⚙ High-Quality OE Design Built to strict Motorcraft standards with premium filter media engineered for the flow rates and pressures of the 6.7L Power Stroke. 🔧 Direct Replacement Exact factory fit for a quick, clean installation — seats and seals just like the original. No leaks, no rework, no comebacks. ✔ Genuine Motorcraft Part 100% authentic OEM Ford Motorcraft — the current superseding part number, not an aftermarket copy or an outdated leftover. Vehicle Fitment Model Years Engine Ford F-250 Super Duty 2017 2018 2019 2020 2021 2022 2023 2024 6.7L Power Stroke V8 Turbo Diesel Ford F-350 Super Duty 2017 2018 2019 2020 2021 2022 2023 2024 6.7L Power Stroke V8 Turbo Diesel Ford F-450 Super Duty 2017 2018 2019 2020 2021 2022 2023 2024 6.7L Power Stroke V8 Turbo Diesel Ford F-550 Super Duty 2017 2018 2019 2020 2021 2022 2023 2024 6.7L Power Stroke V8 Turbo Diesel
Gas engines (6.2L / 6.8L / 7.3L Godzilla) do not use this filter — diesel only. Always confirm fitment with the compatibility chart or your VIN before ordering.
Part Number Cross-Reference Motorcraft Part Number FD-4647 (FD4647) Replaces / Supersedes FD-4625-AA (FD4625AA, FD-4625, FD4625), FD-4641 (FD4641), FD-4646 (FD4646) Ford OE Reference Numbers HC3Z-9N184-C, HC3Z-9N184-J, LC3Z-9N184-A, PC3Z-9N184-C
If the filter currently in your truck is marked FD4625AA or FD4641, the FD-4647 is Ford's updated replacement for the same application.
Signs Your 6.7 Powerstroke Needs a New Fuel Filter
Hard starting or long crank times, especially in cold weather - Loss of power under load, while towing, or during acceleration
- Rough idle, hesitation, surging, or stalling
- Noticeable drop in fuel economy
- "Water In Fuel" (WIF) warning light on the dash
- Low fuel rail pressure codes such as P0087
Don't wait for a breakdown — a restricted filter starves the injection system and accelerates wear. A fresh genuine filter is cheap insurance.
Product Details BrandMotorcraft (Ford Motor Company) Part NumberFD-4647 Part TypeFuel Filter & Water Separator ConditionNew in original packaging Placement on VehicleEngine Compartment (engine-mounted) MaterialHigh-quality plastic housing with OEM filter media Fitment TypeDirect Replacement Includes(1) Genuine Motorcraft FD-4647 fuel filter & water separator, as pictured Protect Your Investment
Diesel fuel quality varies from station to station, and water or fine debris in the fuel is the #1 cause of injector and high-pressure pump failure on the 6.7L Power Stroke. Ford recommends replacing the fuel filters on a regular service interval — typically every 15,000 miles or every third oil change (see your owner's manual). Staying on schedule with genuine Motorcraft filters helps maintain fuel economy, easy cold starts, and full power under load, and protects against repairs that cost far more than the filter itself.
Installation tip: the filter is a straightforward DIY job with basic hand tools. After installing, prime the fuel system by cycling the ignition on and off a few times (per your owner's manual) before starting the engine, and check for leaks at idle. If your service schedule calls for it, replace the frame-mounted filter at the same time for complete fuel system protection.
✔ Fast shipping from our New York, USA warehouse ✔ Brand new, unopened, in original packaging ✔ Genuine OEM — built to fit and perform like the original ✔ Questions? Message us with your VIN — we'll confirm fitment
Compatible with select Ford, Lincoln & Mercury vehicles — for exact fitment, please check your vehicle's fitment information or message us with your VIN. Motorcraft® is a registered trademark of Ford Motor Company. Brand names and part numbers are used for identification and compatibility purposes only. This is a genuine Motorcraft product.
