Genuine 116-987-00-44-64 Mercedes-Benz Windshield Washer Reservoir Plug

The Genuine 116-987-00-44-64 is an OEM Mercedes-Benz windshield washer reservoir plug designed to seal unused pump or port openings on the washer fluid reservoir. This small but critical component prevents fluid leaks and contamination when a reservoir port is not occupied by a pump or hose fitting — commonly needed on vehicles without headlamp washers or heated washer systems.

As a Genuine Mercedes-Benz part, this plug is manufactured to the exact tolerances and material specifications required by the factory, ensuring a secure, leak-free fit that aftermarket alternatives may not provide.

Key Features:

• Genuine OEM Mercedes-Benz part — exact factory replacement
• Seals unused reservoir ports on windshield washer fluid tanks
• Commonly used on vehicles without headlamp washer systems
• Manufactured to precise Mercedes-Benz factory specifications
• Provides a secure, leak-free seal to protect washer fluid reservoir integrity

Cross-Reference / OEM Part Numbers: A1169870044, 116987004464, 1169870044

This plug is a low-cost but important component when replacing or installing a washer fluid reservoir on compatible Mercedes-Benz vehicles. Often sold in multiples when completing a full reservoir installation on models without headlight washers.