Ridex 191B0114 steering rack gaiter (boot) for BMW X3 F25 and X4 F26, front axle. Inner diameter 16 mm / 63 mm, length 204 mm. Concertina-style rubber boot that seals the steering rack housing, protecting the internal rack teeth and tie rod ball joints from dirt, water, and road debris. Compatible with THYSSEN KRUPP steering gear — the OE steering rack supplier for BMW X3 F25. Direct OEM-equivalent replacement for BMW part numbers 32 10 6 779 622 and 32 10 6 795 845. Supplied new in RIDEX quality.