The Bosch O-Ring BDU4XX is a genuine sealing component designed for Bosch mid-drive motors. This small but essential part helps protect internal motor components from moisture, dust, and debris, ensuring long-term performance and reliability for your ebikes drivetrain.

FEATURES

FEATURES:

• O-ring seal for Bosch BDU4XX mid-drive motors
• Prevents ingress of water, dust, and dirt
• Maintains internal protection and system integrity
• Precision fit for high-performance ebike applications
• Genuine Bosch replacement part
• Designed specifically for ebike use