BILLET FUEL FILTER CAP FOR 7.3L POWERSTROKE 1999-2003 ALUMINUM 2-PACK

iFJF part No.: FJ-CAP05-SI-2. Product Overview The iFJF Billet Aluminum Fuel Filter Cap is a permanent upgrade for the failure-prone OEM plastic fuel filter cap on 1999-2003 Ford 7.3L Powerstroke diesel engines. CNC-machined from 6061-T6 billet aluminum, this cap eliminates cracking, warping, and leaking the three most common failures of the factory plastic cap. Includes 2 caps for complete replacement of both fuel filter housing caps. Fits F250, F350, F450, F550 Super Duty and Excursion. Key Features CNC-Machined 6061-T6 Billet Aluminum : Precision-machined from solid aircraft-grade aluminum infinitely more durable than the OEM plastic cap that cracks and warps from heat cycling. Permanent Upgrade : Unlike the factory plastic cap that needs replacement every few filter changes, this billet aluminum cap lasts the lifetime of your truck. 7.3L Powerstroke Specific : Designed for 1999-2003 7.3L Powerstroke V8 diesel. Fits F250 F350 F450 F550 Super Duty and 2000-2003 Excursion. Replaces Ford F81Z9G270BA. Two-Pack Included : Both fuel filter caps included one for the primary filter housing and one for the secondary. Complete upgrade in one purchase. Leak-Free O-Ring Seal : Machined O-ring groove ensures a consistent, leak-free seal every time no more fuel seepage around the cap perimeter. Specifications Specification Detail Part Number FJ-CAP05-SI-2 OEM Reference F81Z9G270BA, 1831193C91, RK31449, 904-203 Material 6061-T6 Billet Aluminum (Silver Anodized) Engine 7.3L Powerstroke V8 Diesel (1999-2003) Quantity 2 Caps (Both Filter Housings) Fits F250 F350 F450 F550 1999-2003 | Excursion 2000-2003 | E350 E450 E550 2003 Thread Standard OEM Thread Pattern Warranty Lifetime Warranty Against Manufacturing Defects Why Choose iFJF? The OEM plastic fuel filter cap on the 7.3L Powerstroke is a well-documented failure point. The plastic degrades from diesel fuel exposure and heat cycling, eventually cracking or stripping threads potentially leaving you stranded with a fuel leak. Our billet aluminum cap is a one-time fix. Install it once and never worry about a cracked fuel filter cap again. This is one of the highest-ROI upgrades for any 7.3L Powerstroke owner. Frequently Asked Questions Q: Will this fit my 2001 F350 7.3L Powerstroke? A: Yes. Direct replacement for all 1999-2003 7.3L Powerstroke fuel filter housings in F250 through F550 Super Duty and Excursion. Q: Why upgrade from the plastic OEM cap? A: The OEM plastic cap (F81Z9G270BA) is notorious for cracking, warping, and leaking especially after repeated filter changes. This billet aluminum cap permanently solves that problem. Q: Does this include the O-ring? A: Yes. The cap incorporates an O-ring groove designed to work with the standard OEM fuel filter O-ring that comes with your replacement filter. Q: Is this for both filter housings? A: Yes. This 2-pack includes caps for both the primary and secondary fuel filter housings on the 7.3L Powerstroke. Q: Will this fit the 6.0L or 6.4L Powerstroke? A: No. This cap is designed specifically for the 1999-2003 7.3L Powerstroke fuel filter housing. The 6.0L and 6.4L use different filter systems. Q: Does this require any modifications? A: None. Same thread pattern and dimensions as the OEM cap. Simply remove the old plastic cap, swap the O-ring onto the new billet cap, and thread it on. Q: Can I overtighten this? A: The billet aluminum cap is much stronger than plastic, but we still recommend hand-tightening firmly approximately 18-22 ft-lbs. Overtighteni