Description
Fuel Filter Cap for 1999-2003 Ford 7.3L Powerstroke
The fuel filter cap (F81Z-9G270-BA) is the lid on top of your 7.3L Powerstroke's fuel filter housing. Over time, the original cap's O-ring hardens and the plastic threads can strip — leading to air intrusion and hard starts. This OEM-spec replacement restores a perfect seal.
Key Features
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OEM-Spec Fit — Replaces Ford F81Z-9G270-BA / 1831193C91
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New O-Ring Included — Prevents air intrusion that causes hard starting
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Durable Construction — Heat and diesel-resistant material
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Simple Replacement — Unscrew old cap, screw on new one — 5 minutes
Compatibility
| Year |
Engine |
Models |
| 1999-2003 |
7.3L Powerstroke V8 |
F-250, F-350, F-450, F-550 Super Duty, Excursion |
FAQ
Q: What are symptoms of a bad fuel filter cap?
A: Hard starting (especially after sitting), air in fuel system, fuel odor under the hood, or visible fuel seepage around the cap.
Q: Do I need to replace the O-ring separately?
A: No. The new O-ring is included with the cap.
Q: Will this fix my hard start issue?
A: If the hard start is caused by air intrusion from a leaking cap seal — yes. This is one of the most common 7.3L hard-start causes.
