Mercedes W245 Windshield Wiper Arm Cover Cap Nut Rear A0009980821

Mercedes W245 Rear Wiper Cover Cap is a precise component from the Wiper Arms group, designed for installation in the rear body area. It is responsible for the aesthetic and functional finishing of the wiper mount, protecting it from dirt and weather conditions. Thanks to its factory fit for Mercedes models of the W245 series, it ensures a cohesive look and proper operation of the rear wiper system.

Specifications and technical data

• SKU: A0009980821
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0009980821
• Substitutable numbers: A0009980821, A 000 998 08 21
• Location on the vehicle: Rear
• Category: Wiper Arms

Purpose and Function of the Component

The rear wiper cover cap serves several important functions in the rear window cleaning system. Firstly, it protects the connection between the wiper arm and the mechanism, limiting the ingress of moisture, dirt, and road salt. Secondly, it visually tidies up the mounting area, maintaining the vehicle's factory-ordered appearance at the rear. Its placement in the rear body area means this component operates in demanding conditions, making its correct selection crucial for the durability of the entire wiper system.

Compatibility with Mercedes W245

The described cover has been designed with the rear wiper construction of Mercedes B-Class W245 models in mind. This ensures correct geometry, appropriate profile, and mounting method, leading to a secure fit on the wiper arm and stable holding during operation. Using an original solution from the Wiper Arms group helps avoid problems typical of random aftermarket parts, such as play, unsightly gaps, or improper adhesion to the glass and bodywork.

Performance Characteristics and Installation

The component is prepared for operation in the rear of the vehicle, where it is exposed to intense dirt and variable weather conditions. The cover's design allows for:

• protection of the wiper arm-to-mechanism axis connection against moisture and dust,
• maintaining the aesthetic appearance of the rear window and tailgate,
• reducing the risk of accelerated corrosion in the wiper mounting area.

Due to its specific body platform fit, installation is straightforward and does not require modification of the wiper arm structure. A correctly fitted cover also facilitates potential future system servicing, as access to the mount remains predictable and in line with factory specifications.

Product Condition and Benefits of Choosing a Used Part

The offered cover is a used item, allowing for an economical repair of the rear wiper system while maintaining the original manufacturer's specifications. Choosing such a solution is particularly beneficial when the existing cover has suffered mechanical damage, cracking, or has lost its stable mounting. Using an original used part helps maintain visual consistency with other body elements and reduces costs compared to new components, while preserving proper protective and mounting function.

Expansion of the Mercedes Wiper Arms System

If you are planning a comprehensive repair or upgrade of the rear window area in your Mercedes and need other parts from the same group, such as arms, caps, or additional covers, check the available parts in the Mercedes Wiper Arms category.

Practical Purchasing Tips

When selecting a rear wiper cover, pay attention to its compatibility with the specific body series and its intended use for the rear of the vehicle. A correctly fitted part minimizes the risk of leaks and accidental slippage from the arm during operation. If you want to plan your purchases better and gather other original used components in one place, the guide describing the One-Stop-Shop approach might be helpful – find more information in the article Comprehensive Sourcing: From Engine to the Smallest Clip.