The Knecht air filter is a filter insert compatible with BMW E87, E90, E91, E92, and X1.

• Filter type: Filter insert
• Compatibility: BMW E87, E90, E91, E92, X1
• Height: 199 mm
• Outer diameter: 137 mm
• Inner diameter 1: 79 mm
• Height 1: 146 mm
• Outer diameter 1: 127 mm
• Length 1: 160.5 mm
• Net weight: 171 g