The genuine Motorcraft EC-743 Engine Oil Filler Cap is a premium OEM replacement designed to provide a secure and reliable seal for your engine’s oil fill system. Manufactured to Ford’s original factory specifications, this cap helps prevent oil contamination, leaks, and pressure loss while maintaining proper engine performance and protection.
Constructed from durable heat- and chemical-resistant materials, the EC-743 is built to withstand harsh engine bay temperatures and everyday driving conditions. Whether your original cap is cracked, leaking, or missing, this direct-fit replacement restores factory functionality with OEM-quality reliability and fitment.
Key Features
- Genuine Motorcraft OEM replacement part
- Direct-fit design for quick and easy installation
- Helps prevent oil leaks and contamination
- Heat- and chemical-resistant construction
- Manufactured to Ford factory specifications
- Ideal replacement for worn, damaged, or missing oil caps
Vehicle Applications
- Ford F-250 Super Duty
- Ford F-350 Super Duty
Powerstroke Engine Compatibility
- 1994–2003 — 7.3L Powerstroke
- 2003–2007 — 6.0L Powerstroke
- 2008–2010 — 6.4L Powerstroke
OEM Cross Reference
- Motorcraft EC-743
- Ford F3AZ-6766-B
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