F3AZ-6766-B Oil Fill Cap Aluminium Silver for Powerstroke 1993-2010
Aluminium oil fill cap F3AZ-6766-B, also sold as EC743, machined from 6061-T6 billet and silver anodised. Cross-references FOAZ-6766-A, E9TZ-6766-A, EC-775 and 1L3Z6766AA. Fits the Ford 250, 350, 450 and 550 Super Duty and the Econoline vans with the 7.3L, 6.0L and 6.4L Powerstroke, and the 1993 to 2010 petrol and diesel engines that use the same filler neck.
| Tier Pricing (USD / unit) | |
|---|---|
| Qty | Unit Price |
| 1+ units | $15.99 |
| 10+ units🎯 Recommended | $15.19 |
| 50+ units | $13.59 |
| 100+ units | $12.79 |
📋 Key Specs
| Part Number | F3AZ-6766-B |
| Type | Oil filler cap, quarter-turn bayonet |
| Material | 6061-T6 billet aluminium, silver anodised |
| Connection | Push down and turn a quarter to lock |
| Seal | New O-ring supplied with the cap |
| Contents | 1 x aluminium oil fill cap, 1 x O-ring |
| Application | Ford 7.3L, 6.0L and 6.4L Powerstroke in the F-250 to F-550 Super Duty and the E-150 to E-350 Econoline; also the 1993-2010 Ford petrol engines that use the same filler neck |
| Notes | Cross-references EC743, EC-775, FOAZ-6766-A, E9TZ-6766-A, 1L3Z6766AA, 3C3Z6766A, 90005, MO100, OC2321 and 14100. No body dimensions are quoted because the source page carries no measured size. |
❓ FAQ
Yes. The same cap covers the 7.3L, 6.0L and 6.4L Powerstroke valve covers, and the source listing also covers a long list of 1993 to 2010 Ford petrol engines that use the same filler neck.
Yes. One new O-ring is in the box. The seal sits under the cap against the filler neck, so a hardened old ring is not reused. Fit the new ring with the cap.
Yes, EC743 and EC-743 are the same cap under a different numbering, along with FOAZ-6766-A, E9TZ-6766-A and EC-775.
It is a quarter-turn bayonet: press down and turn to lock. There is no thread to cross, so it cannot be over-tightened the way a screw cap can.
Because the source page carries no measured body size, only the material and the cross-reference numbers. Guessing a diameter would be worse than leaving it out, so the page does not quote one.
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
F3AZ-6766-B is the aluminium oil fill cap for the Ford Powerstroke valve covers and for the wide range of 1993 to 2010 Ford engines that share the same filler neck. It is machined from a 6061-T6 billet and silver anodised, so the bayonet lugs and the grip ring keep their shape instead of wearing round like the plastic original. The cap presses in and turns a quarter to lock, the same motion as the factory part it replaces.
