Description
Product Overview
The EC781 Oil Filter Cap & FL2016 Filter Combo solves the most common oil change frustration on Ford 6.0L and 6.4L Powerstroke engines: the failure-prone plastic OEM oil filter cap. This combo pairs our CNC-machined EC781 billet aluminum cap (replaces 3C3Z-6766-CA / 1840754C91) with a high-quality FL2016 oil filter — everything you need for an oil change that eliminates the plastic cap problem permanently.
Key Features
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CNC Billet Aluminum Cap: 6061-T6 aluminum with anodized finish replaces the OEM plastic cap (3C3Z-6766-CA) that cracks, warps, and rounds off. Precision-machined 36mm hex for sure-grip socket engagement.
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FL2016 Oil Filter Included: High-capacity filter element rated for the 15-quart oil system of the 6.0L/6.4L Powerstroke. Synthetic-blend media for extended drain intervals.
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Leak-Proof Design: Flat-machined sealing surface and included Viton O-ring ensure a consistent seal that won't weep oil down the side of the filter housing.
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Direct Drop-In Replacement: Same thread pitch and height as OEM. Threads into the factory oil filter housing with zero modifications.
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Never Strip Again: The OEM plastic 36mm hex rounds off after a few oil changes — especially when hot. Our billet aluminum hex won't round, strip, or deform.
Compatibility
| Year |
Make |
Model |
Engine |
| 2003-2007 |
Ford |
F-250/F-350/F-450/F-550 Super Duty |
6.0L Powerstroke V8 |
| 2008-2010 |
Ford |
F-250/F-350/F-450/F-550 Super Duty |
6.4L Powerstroke V8 |
| 2003-2005 |
Ford |
Excursion |
6.0L Powerstroke V8 |
| 2003-2010 |
Ford |
E-350/E-450 Super Duty Van |
6.0L Powerstroke V8 |
Specifications
| Specification |
Value |
| Part Number |
FJ-OF2016-CAP03-CK |
| Cap OE Cross Reference |
3C3Z-6766-CA, 1840754C91, EC781 |
| Filter OE Cross Reference |
FL2016, PF2016 |
| Cap Material |
6061-T6 Billet Aluminum, Anodized |
| Socket Size |
36mm Hex |
| Oil Capacity (Engine) |
15 Quarts (6.0L) / 15 Quarts (6.4L) |
Frequently Asked Questions
Q: What's included in this combo?
A: This combo includes one EC781 billet aluminum oil filter cap (anodized finish) and one FL2016 oil filter. Everything you need for an oil change with the OEM plastic cap upgrade.
Q: Why replace the OEM plastic oil filter cap?
A: The factory plastic oil filter cap on 6.0L and 6.4L Powerstroke engines is notorious for cracking, warping, and leaking — especially after multiple heat cycles. The tab that engages the socket wrench rounds off, making filter removal extremely difficult. Our EC781 billet aluminum cap is a permanent solution.
Q: Does this fit the 2003 Excursion with the 6.0L?
A: Yes. This combo fits 2003-2005 Ford Excursion with the 6.0L Powerstroke, as well as 2003-2010 F-250 through F-550 Super Duty trucks with 6.0L or 6.4L engines. Also fits 2003-2010 E-Series vans with 6.0L.
Q: What torque should I use on the cap?
A: Hand-tighten the cap first, then torque to 18-22 ft-lbs using a 36mm socket. Do NOT overtighten — the O-ring does the sealing, not the threads. Over-torquing can strip the aluminum housing threads ($800+ to replace the oil filter housing).
