<p>This BMW Valvetronic Wiring Harness (OEM 7633265) is a used genuine part, removed from a donor vehicle. It serves the valvetronic variable valve lift system on the 4.4L twin-turbo V8 (N63 family). A failing harness can trigger valvetronic fault codes, rough idle, or reduced power.</p><p><strong>Fits:</strong> BMW 550i (2014-2016), BMW 550i GT (2013-2015), BMW 550i GT xDrive (2013-2017), BMW 550i xDrive (2014-2016), BMW 650i (2013-2018), BMW 650i Gran Coupe (2013-2019), BMW 650i xDrive (2013-2018), BMW 650i xDrive Gran Coupe (2013-2019), BMW 750Li (2013-2015), BMW 750Li xDrive (2013-2015), BMW 750i (2013-2015), BMW 750i xDrive (2013-2015), BMW Alpina B6 xDrive Gran Coupe (2015-2019), BMW Alpina B7 (2013-2015), BMW Alpina B7 xDrive (2013-2015), BMW Alpina B7L (2013-2015), BMW Alpina B7L xDrive (2013-2015)</p><p><strong>OEM part number:</strong> 7633265.</p><p><strong>Condition:</strong> Used OEM, pulled in-house from a donor vehicle scanned with factory diagnostic tools; tested where possible, with per-part condition notes. 30-day returns.</p>