Brake Reservoir Cap

Ford's official description

Motorcraft brake master cylinder caps are engineered to provide original equipment performance and reliability. They are designed to be installed using factory approved tools and methods. • Undergoes rigorous lab and real-world tests to meet Ford engineering standards. • Tested for strength, fatigue, and temperature extremes. • Designed for replacement using factory approved tools and methods.

Description from FordParts.com — fitment above is ours; always verify by VIN before ordering if you're unsure.