No personal experience with it, but all the pictures I've seen of it show Continental on the side.

AutohausAZ seems to have the best price on this ATM @ $480. But if keeping the vehicle I'd buy it at FCP for sure @ $527. Shame someone else doesn't make a quality replacement. Pierburg was the OE supplier for the majority of N52 pumps (not just X5 chassis) if I recall.

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2005 X5 4.4i Build 04/05 Maintenance/Build Log
Nav, Pano, Sport (Purchased 06/14 w/ 109,000 miles) (Sold 8/15 w/121,000 miles)

2006 X5 4.8is Build 11/05 Maintenance/Build Log
Nav, DSP, Pano, Running Boards, OEM Tow Hitch, Cold Weather Pckg (Purchased 08/15 w/ 90,500 miles)

2010 X5 35d Build 02/10
Nav, HiFi, 6 DVD, Sports Pckg, Cold Weather Pckg, HUD, CAS, Running Boards, Leather Dash, PDC, Pano (Purchased 03/17 w/ 136,120 miles)