FL2016 Oil Filter and EC781 Cap Kit Ford 6.0L 6.4L Powerstroke
The oil filter service for the Ford 6.0L and 6.4L Powerstroke as a set: the FL2016 cartridge, a new EC781 plastic cap and two O-rings. Replacing the cap with the element is what stops the seep that starts at a hardened cap ring, and the cap is supplied in the same plastic as the factory part so it torques to the housing the way it was designed.
📋 Key Specs
| SKU | FJ-OF2016-CAP03-CK |
| Kit contents | 1 x EC781 plastic oil filter cap, 1 x FL2016 oil filter cartridge, 2 x O-rings |
| Cap part numbers | EC781, 1840754C91, 3C3Z-6766-CA |
| Cap also replaces | 1837497C1, RK31821, 904-204 |
| Oil filter part numbers | FL2016, 3C3Z-6731-AA, 1840752C91, PF1704 |
| Oil filter also replaces | P7235, CH9549, 57311, P550528, LF16166, ML1034 |
| Cap material | Heat-resistant plastic, same grade as the factory cap |
| Cap colour | Black |
| Cap socket size | 1-3/8 in (35 mm) |
| Cap thread | B100 x P3 |
| Cap outside diameter | 3.98 in (101 mm) |
| Cap torque | 25 Nm (18 lb-ft) |
| Oil filter type | Cartridge element, drops into the cap |
| Oil filter valves | Pressure-relief and anti-drain-back |
| Oil filter dimensions | 3.25 x 3.25 x 7 in, outside diameter 4.5 in, 125 g |
| Abrasive capture | 98% |
| Service interval | 3,000-5,000 miles as stated on this listing; the factory manual for the 6.0L quotes 7,500 normal and 5,000 severe |
| Fitment | 2004-2010 E-350 / E-450 6.0L; 2004-2005 E-350 Club Wagon 6.0L; 2003-2007 F-250 to F-550 Super Duty 6.0L; 2008-2010 F-250 to F-550 6.4L; 2003-2005 Excursion 6.0L; 2006-2009 LCF 4.5L V6 |
| Weight | 0.35 kg (12.3 oz) |
| Warranty | 90 days against manufacturing defects |
❓ FAQ
Not on every service, but the cap is the part that fails first on these engines. It is plastic and lives in heat and oil vapour, and after eight to ten years it goes brittle and cracks at the hex or along a thread flank. If yours is dry and the groove is clean, the cap in this kit will last as long as the next one. If it is weeping, cracked, or the threads are chewed from a previous over-torque, changing it with the element saves a second strip-down.
The widest fitment of the group: 2003-2007 F-250 to F-550 Super Duty with the 6.0L, the same trucks 2008-2010 with the 6.4L, the E-350 and E-450 Super Duty 2004-2010, the E-350 Club Wagon 2004-2005, the Excursion 2003-2005 and the LCF 4.5L V6 2006-2009. The F-650 and F-750 are not on this list; they use a separately listed cap.
One seals the cap in its groove, and the second is a spare for the element stem. The ring is what hardens first and it is also the cheapest part of the job to get wrong, so a spare means the service does not stop because a seal tore on assembly or came out of the box damaged. Lubricate whichever you fit with clean engine oil and seat it without twisting.
The listing for this kit quotes 3,000 to 5,000 miles. The factory manual for the 6.0L gives 7,500 miles in normal service and 5,000 in severe service, counting towing, heavy loads, dust and a lot of short cold starts as severe. Use the manual figure that matches your duty cycle, and if in doubt go with the shorter one; a cartridge is cheap next to the high-pressure oil pump that fires the injectors.
One EC781 plastic cap, one FL2016 oil filter cartridge and two O-rings. The set is covered for 90 days against manufacturing defects, which covers a cracked moulding, a damaged thread, a collapsed filter medium and valve failure. Every batch is checked for thread form, hex fit, groove depth, pleat count and valve operation before it is packed.
MOQ varies by product: 5–100 units for standard parts (see product page). Tier pricing decreases with volume. Custom parts usually ≥ 50 units, evaluated by process.
Stock/short-run: 7–15 days; bulk orders 20–35 days; custom 30–45 days incl. sampling. Note your deadline in the inquiry — sales will confirm capacity.
Add products to the inquiry list and submit with contact info. Sales contact you within 24h and issue a formal quotation (tier pricing + proforma invoice) within 48h. The AI assistant can pre-fill inquiries in chat.
Yes. We develop from drawings/samples and support private labeling. Process: evaluation → sampling (15–25 days) → approval → mass production.
Payment: T/T 30% deposit + 70% before shipment / L/C / Trade Assurance. Shipping: FOB Ningbo/Shanghai, CIF or DDP; EU & NA warehouses; sea/air/express.
ISO 9001 & IATF 16949; CE/UL/ATEX on key products. Every batch ships with inspection reports; third-party inspection (SGS/BV) supported.
Description
Product Overview
This set covers one oil filter service on the Ford 6.0L and 6.4L Powerstroke V8 and it covers the part most services skip: the cap. You get the FL2016 cartridge, a new EC781 cap moulded in the same plastic as the factory part, and two O-rings.
Changing the cap with the element is worth doing because the seal is what usually fails. The cap lives in heat and oil vapour for a decade, the ring hardens and takes a set, and the first sign is a diesel smell and a damp patch on the housing a week after the filter was changed. A new ring fixes that only if the cap's groove is still true, which is why the two ship together. The fitment here covers the wide range: the F-250 to F-550 Super Duty in 6.0L and 6.4L, the E-350 and E-450 vans, the Excursion and the LCF 4.5L.
