Febi 12173 Air Filter Housing Grommet

Febi 12173 Air Filter Housing Grommet

Febi 12173 is an air filter housing grommet built for the rocker cover mounting point. It uses an M6 x 1 outside thread, a 17 mm thread length, and a rubber-metal buffer design with threaded stud connections on both sides for a secure OE-style fit.

Use this febi hardware when replacing a worn or damaged air filter housing grommet on BMW applications such as the 325Ci, 330i, X5, and Z4. The compact 20 mm height and 19 mm outer diameter help maintain proper mounting alignment where the air intake housing interfaces with the rocker cover.

Key Features

• Brand: Febi / febi
• Part number: 12173
• Air filter housing grommet for rocker cover mounting
• Outside thread: M6 x 1
• Thread length: 17 mm
• Height/thickness: 20 mm
• Outer diameter: 19 mm
• Rubber-metal buffer type A with threaded stud on both sides

Detailed Description

Febi 12173 is a mounting grommet used at the rocker cover to support air filter housing attachment points and help maintain a stable connection between the intake housing and engine cover area. The rubber-metal buffer construction is suited to applications where controlled support and threaded fastening are required. This part cross-references BMW OE numbers 11 12 1 730 356 and 1730356 for the same application. Febi 12173 is listed for a wide range of BMW models, including 2001-2006 BMW 325Ci, 2001-2006 BMW 330Ci, 2001-2006 BMW 330i, 2004-2006 BMW X3, 2001-2006 BMW X5, and 2003-2006 BMW Z4.

What It Helps Address

• Loose or unstable air filter housing mounting at the rocker cover
• Worn rubber-metal support that no longer holds alignment
• Threaded attachment issues at the intake housing connection point
• Noise or vibration from a deteriorated mounting buffer
• Improper seating of the air filter housing on BMW intake assemblies

Installation Notes and Tips

Verify the mounting location on the rocker cover and confirm thread size, thread length, and outer diameter before installation. Compare the removed part to Febi 12173 to ensure the M6 x 1 outside thread and 20 mm overall height match the original hardware. For best results, inspect the surrounding mounting points for wear or damage before securing the replacement grommet.

Quality Assurance

Febi supplies OE-style replacement hardware for European vehicle applications, with dimensional specifications that support accurate fitment. Confirm vehicle fitment against the listed BMW models and OE cross-reference numbers before ordering.