Genuine BMW 51-48-8-403-042 Door Panel Sound Insulation - Rear Right

The Genuine BMW Door Panel Insulation (part number 51-48-8-403-042) is an OEM sound-deadening and moisture barrier component designed specifically for the rear right (passenger side) door of BMW E53 X5 models from 2000 to 2006. This factory insulation panel installs behind the interior door panel to reduce road noise and vibration while protecting internal door components from moisture intrusion.

Key Features:

• Genuine BMW OEM part ensures perfect fit and original equipment specifications
• Reduces cabin noise by insulating against road noise and wind sound
• Acts as a vapor barrier to prevent moisture damage to door components
• Made from durable foam material designed to withstand temperature extremes
• Direct replacement for worn, torn, or missing door insulation
• Often requires replacement after window regulator service or door panel removal

This insulation panel is an essential component for maintaining interior comfort and protecting electrical components within the door cavity. When the insulation becomes damaged or is removed during service, it should be replaced to maintain proper sound deadening and moisture protection. Compatible with all BMW X5 E53 variants including 3.0i, 3.0d, 4.4i, 4.6is, and 4.8is models.