Description
Ford 6.4L Powerstroke Fuel Filter FD-4617 — HPFP Insurance
The FD-4617 Fuel Filter is the correct replacement for 2008-2010 Ford 6.4L Powerstroke diesel engines. The 6.4L was Ford's first common-rail diesel with DPF — and its Siemens high-pressure fuel pump is notoriously sensitive to fuel contamination.
6.4L HPFP: Why Filtration Is Everything
The Siemens HPFP in the 6.4L generates 30,000+ psi for piezo injectors. Unlike the 6.7L's CP4.2, the 6.4L pump is NOT known for random failure — but contaminated fuel WILL destroy it. When the HPFP fails ($3,000+ for the pump alone), metal debris travels through all 8 injectors, both fuel rails, and the high-pressure lines. Complete fuel system replacement: $8,000+.
Specifications
| Part Number |
FD-4617 |
| OEM Cross-Reference |
8C3Z-9N184-C, Motorcraft FD-4617 |
| Fitment |
2008-2010 F-250, F-350, F-450, F-550 6.4L Powerstroke |
| Quantity Required |
2 (primary frame-mounted + secondary engine-mounted) |
| Service Interval |
Every 10,000 miles — more frequent than the 6.7L due to DPF regen heat |
6.4L Known Issues — The Short Production Run Problem
The 6.4L was only produced for 3 model years (2008-2010). As these trucks age, parts availability is shrinking. Common issues:
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Radiator failure: Plastic end tanks crack at 100-150K miles
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#7/#8 piston cracking: High EGTs during DPF regeneration
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Rocker arm failure: Needle bearings disintegrate
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Up-pipe bellows: Crack and leak exhaust
FAQ
Q: How many fuel filters does my 6.4L need?
A: TWO. Both the frame-mounted primary filter and the engine-mounted secondary filter use the same FD-4617 element. Always buy a pair and change both simultaneously.
Q: Why change 6.4L filters every 10K miles vs 15K for the 6.7L?
A: The 6.4L's DPF regeneration system injects fuel on the exhaust stroke, increasing overall fuel temperatures. Hotter fuel accelerates filter media degradation. More frequent changes are cheap insurance.
Q: Are 6.4L and 6.0L filters interchangeable?
A: No. The 6.4L uses FD-4617. The 6.0L uses FD-4616. They have different thread patterns and seal dimensions. Using the wrong filter will cause leaks.
Q: My 6.4L is deleted — do I still need to change filters this often?
A: Yes. While DPF regeneration increases fuel temperature, the HPFP is still lubricated solely by diesel fuel. Clean fuel = happy pump. Stick to the 10K interval regardless.
