Circlip (DCS) 261

The DCS 261 circlip is a precision-engineered lock ring designed to securely fix the shaft drives within the transfer case. It prevents axial movement, ensuring that the drive components remain perfectly aligned even under high torque loads.

You should replace it if you notice excessive play in the drive shaft or hear metallic clicking noises from the drivetrain. Mechanics also recommend replacing this ring during any transfer case teardown, as these clips can lose tension or deform once removed.

It is not recommended. Circlips are designed to maintain a specific tension. Once they have been compressed or expanded for removal, they may not provide the same clamping force, which could lead to a shaft shifting and causing internal transmission damage.

This specific lock ring is designed for Mercedes-Benz vehicles equipped with the DCS (Double Clutch System) style transfer cases. While it fits many modern AWD models, you should always check your specific transfer case model number or VIN to ensure compatibility.

Yes, you will need a set of heavy-duty circlip pliers. Using standard pliers or screwdrivers can overstretch the ring or cause it to snap, leading to potential failure inside the drive housing.