Processing Of 2K-PU-Cavity Foam Rep-Alg-RAGRP41-4100X01 - 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.

Sourcing reference for cavity foam, refer to BMW Parts Department.

Properties of cavity foam:

2-component PU foam, solvent-free.
Excellent flow capacity, enables complete seal of cavities.
Good strength, preventing slipping in cavities.
Low water absorption, preventing corrosion.
Ideal for use as insulating and sealing compound.

Information on dangers/hazards :

Avoid eye and skin contact.
Wear eye protection, solvent-resistant protective gloves and protective clothing.
Do not inhale.
Apply in well ventilated rooms only.

WARNING: Processing time after mixing process: within 8 minutes!
Completely drain open cans after use.
Residual amounts which are not used can cause the can to explode on account of a chemical reaction (buildup of heat)!
Alternatively, cool the can containing the non-removed residual amount for several hours in cold water.
Do not eat, drink or smoke during this operation.
Keep heat and ignition sources well away.
Read the manufacturer's information on hazards/dangers (printed on the can) prior to application.

Processing instructions :

Observe the expiry date on the cartridge.
Do not use the spray can after the expiry date on the can has expired. After the Use by date the properties of the cavity foam will no longer meet the requirements of the BMW Group.
Cavity sealing of repair area possible after an air drying time of 1 hour.
Backing surface must be clean and free from dust, grease,
oil and stripping agent.
Application temperature at least 15°C. Optimally 20°C.
Remove fresh, non-hardened PU foam with adhesive cleaner 208.
Sourcing reference: BMW Parts Department.

Hardened PU foam can only be removed by mechanical means (machine).
Excess, hardened PU foam can be disposed of as residual waste.
Cans which are not entirely empty and unused whose expiry date has expired are classed as hazardous waste.

Observe country-specific waste disposal regulations.
Observe the manufacturer's processing instructions (printed on the can).
IMPORTANT: Foam expands many times over as it sets (change in volume).
Setting takes approx. 30 minutes. Then it is possible to perform mechanical work on it (e.g. drilling, cutting, etc).