Prefilter NIOBE, Rev.: 01 (P#7737120) 7737120 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 7737120 – Prefilter NIOBE, Rev.: 01 Description Description Prefilter NIOBE, Rev.: 01