Washer Reservoir Cap 15- Mustang

The Washer Reservoir Cap for 15–present Mustang models is a critical fluid containment component engineered by Drake Automotive Group to maintain windshield washer system integrity. Whether you're restoring an original Mustang or maintaining a modern S550, this cap seals the washer fluid reservoir against debris, evaporation, and contamination. As a mechanic, you know that a compromised washer cap allows dirt and moisture into the system, leading to clogged nozzles and pump failure—costly problems that proper sealing prevents from the start.

Manufactured to OEM specifications (MPN FR3Z-17632-BL), this cap features a precision-molded design that creates a watertight seal while remaining easy to remove for routine fluid refills. The compact footprint—4.25 x 1.4 x 5.9 inches—fits the factory reservoir mounting point without modification, and the lightweight construction (0.21 lbs) means zero added engine bay burden. Drake's engineering ensures the cap threads smoothly and holds firm under vibration and temperature cycling, critical for under-hood reliability during aggressive driving or daily commutes.

This replacement cap is ideal for DIY Mustang enthusiasts, professional shops, and fleet maintenance teams who need to restore washer system function on 2015 and newer Mustangs. Original caps deteriorate from UV exposure and thermal stress, cracking or loosening over time and causing slow fluid loss or system contamination. Installation is straightforward—simply unscrew the old cap and thread the new one onto the reservoir until snug; no tools or special knowledge required. Whether you're performing a full fluid system refresh or swapping a damaged cap, Drake's FR3Z-17632-BL delivers OEM-grade performance at aftermarket pricing.