3556028 KNORR-BREMSE SL7, SM7, ST7 Ø69mm Bellow

The 3556028 brake caliper tappet serves as a critical component within the air disc brake system. This specialized optional and dust bellow is designed to protect internal mechanisms from environmental contaminants, ensuring consistent braking performance and extending the service life of the caliper assembly.

This component is specifically engineered for compatibility with KNORR-BREMSE systems, specifically the SL7, SM7, and ST7 models. 3556028 is the OE-equivalent part used in KNORR-BREMSE SL7, SM7, and ST7 braking hardware. It provides a precise fit with a diameter of Ø 69 mm to maintain optimal mechanical tolerances during operation.

For workshop technicians performing brake system maintenance or overhauls, this part offers a reliable solution for addressing dust ingress or seal wear. It is essential for maintaining the integrity of the brake caliper assembly in heavy commercial vehicle applications. Regular inspection of these bellows during routine service helps prevent system failures caused by debris or moisture.