Installing Cavity Sealing (Expanded) Rep-Rep-RAGRP41-4107101 - V.2 (M4 2021-2023)
WARNING: This page is about a different car, the 2025 BMW M4, 2024 BMW M4, 2023 BMW M4, 2022 BMW M4, and 2021 BMW M4. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Carry over schematic diagram to the relevant vehicle type.
The following repair represents the procedure for an already expanded cavity acoustic baffle.
The cavity acoustic baffle remains on the body in this instance.
Before these work steps, prepare the new part so that it is ready to install (adapting, cutting to size, applying welding primer etc.).
Clean contact surface (1) with cleaning agent R2.
Apply a bead (2) approx. 15 mm high of SEALANT D2 to contact surface (1).
If necessary apply sealant D2 somewhat thinner on each side, to prevent the sealant from running.
Fit, secure and weld up new part.
WARNING:
Ensure adequate ventilation over entire processing period.