Pre-filter 1-2-6, Revision: 02 (P#5891309) 5891309 Category: Siemens Healthcare Low Prices Price match guarantee Guaranteed Fitment. Always the correct part In-House Experts. We know our products Easy Returns. Quick & Hassle Free 5891309 – Pre-filter 1-2-6, Revision: 02 Description Description Pre-filter 1-2-6, Revision: 02