About this part
Two replacement retainer geometries for repairing broken attachment tabs on the BMW X1 E84 engine air-filter housing. The creator links the original repair write-up and supplies physical comparisons, loose parts and installed engine-bay views for both shapes. The printed pieces repair features of the larger air-filter housing rather than reproducing a separately serviced BMW child component, so no housing parent number is assigned. Print in PETG as documented or a higher-temperature engineering polymer, fasten exactly as shown, and verify intake sealing, bonnet clearance and retention after heat cycling.