Mercedes X253 Rear Window Seal Door Left N/S Gasket Frame Trim A2537370371

The Mercedes X253 Left Rear Door Window Seal is a precise body component responsible for the tight fit of the window in the driver's side door frame. By matching the specific X253 generation and utilizing original geometry, this window seal and frame trim helps maintain proper acoustic insulation and water protection in the rear of the vehicle.

Specifications and technical data

• SKU: A2537370371
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2537370371
• Substitutable numbers: A2537370371, A 253 737 03 71
• Location on the vehicle: Rear, Left
• Category: Window Seals, Gaskets & Trims

Vehicle Application and Placement

This seal is designed for installation in the left rear door (driver's side on left-hand drive versions) of Mercedes X253 models. The component operates at the junction of the window and the door frame, creating a flexible barrier between the glass and the body. A correctly installed seal stabilizes the window in its track, reduces vibrations, and minimizes the risk of water and debris entering the door interior.

Technical Function and Installation Benefits

The left rear door window seal in the Mercedes X253 performs several important operational functions:

• Creates a watertight seal between the window and the door frame,
• Assists in maintaining proper cabin acoustic insulation,
• Reduces moisture ingress into the door interior and sill area,
• Stabilizes the window during raising and lowering, reducing its operational play.

Thanks to the original Mercedes geometry, the component maintains the correct line of contact with the window and frame, contributing to a cohesive appearance of the vehicle's side body and the proper functioning of the window regulator mechanism.

Characteristics of an Original Mercedes Part

This seal belongs to the group of Window Seals and Trim, components responsible for the sealing and aesthetics of glazing. The original Mercedes solution ensures:

• Compatibility with the factory left rear door frame,
• Proper guidance of the window edge throughout its entire range of operation,
• Maintenance of the factory contact line between the window and the body.

As part of the same body component group, the seal works in conjunction with other trim and seals in the door, creating a unified system for protection against water and noise. This is particularly important in premium vehicles where acoustic comfort and visual continuity of glazing are significant for the user.

Condition, Selection, and Practical Application

The item is offered in used condition, allowing for an economical replacement of a damaged or worn seal while maintaining the original manufacturer's specifications. When selecting, pay attention to:

• Compatibility with the X253 body generation,
• Correct placement – rear, left side,
• Fit with the existing door frame and window mechanism.

Replacing a worn seal with an original part of this type is particularly recommended when symptoms such as increased noise at higher speeds, signs of moisture in the lower part of the door, or noticeable play in the window track appear. Using the correct component helps restore the factory level of sealing for the rear body section.

Expansion of Modernization and Technical Knowledge

If you are planning a comprehensive repair or modernization of the glazing and door area in your Mercedes and require other parts from the same group, such as additional frame seals, trim strips, or window guides, check the available parts in the Mercedes Window Seals and Trim category.

For owners of older models who wish to consciously use used body components and improve the visual and functional condition of their car, an article describing practical modernization scenarios with used parts may be helpful – more information can be found in the material Second Life for a Youngtimer – How Used Car Parts Revitalize Cars from 1998–2012.