EC781 Oil Filter Cap Aluminium Silver for Ford 6.0L 6.4L Powerstroke
Aluminium oil filter cap EC781, machined from 6061-T6 billet and silver anodised, with a plugged 1/8 in NPT port in the top for a pressure or temperature sender. Cross-references EC781, 1840754C91, 3C3Z-6766-CA, RK31821 and 904-204. Fits the Ford 6.0L Powerstroke from 2003 to 2007 and the 6.4L from 2008 to 2010 in the F-250 to F-550 Super Duty, plus the 6.0L Excursion.
| Tier Pricing (USD / unit) | |
|---|---|
| Qty | Unit Price |
| 1+ units | $43 |
| 10+ units🎯 Recommended | $40.85 |
| 50+ units | $36.55 |
| 100+ units | $34.40 |
📋 Key Specs
| Part Number | EC781 |
| Type | Oil filter cap, twist-on, for the cartridge housing on top of the engine |
| Material | 6061-T6 billet aluminium, silver anodised |
| Thread | B100 x P3 |
| Connection | 1-3/8 in (35 mm) socket; 1/8 in NPT gauge port, plugged |
| Seal | O-ring supplied with the cap |
| Contents | 1 x aluminium oil filter cap, 1 x O-ring |
| Application | Ford 6.0L Powerstroke 2003-2007 and 6.4L Powerstroke 2008-2010, F-250 to F-550 Super Duty; 6.0L Excursion 2003-2005 |
| Notes | Torque to 25 Nm (18 lb-ft). Outside diameter is not stated because the published figures for the plastic and aluminium caps differ by more than 10 mm; compare against the cap you remove. |
❓ FAQ
Yes. The same cap covers the 6.0L Powerstroke from 2003 to 2007 and the 6.4L from 2008 to 2010, both in the F-250 to F-550 Super Duty. The 6.0L Excursion from 2003 to 2005 uses it too.
Yes, one O-ring is in the box. The O-ring sits under the cap and seals against the housing, so a new one goes on with the cap rather than the old hardened ring.
It is a plugged 1/8 in NPT port for an oil pressure or temperature sender. Remove the plug and screw the sender in; nothing has to be drilled and no adapter is needed.
It replaces the same part numbers and fits the same housing, but the body is 6061-T6 billet aluminium with a silver anodised finish instead of moulded plastic. The plastic version is listed separately.
25 Nm, which is 18 lb-ft. That is the figure the factory cap uses as well; going past it is what splits the plastic cover on the standard part.
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
EC781 is the aluminium oil filter cap that closes the cartridge housing on top of the Ford 6.0L and 6.4L Powerstroke, and it goes on in place of the factory plastic cover. It threads onto the same housing, holds the same O-ring, and takes a 1-3/8 in (35 mm) socket on a B100 x P3 thread, so the FL2016 cartridge underneath is changed exactly as before. A plugged 1/8 in NPT port in the top is the one addition: it saves drilling a hole when an oil pressure or temperature sender is fitted.
