[INDUSTRY LEADER] - As an original equipment global leader in mass air flow technology, all Bosch Mass Air Flow (MAF) sensors ensure low levels of harmful emissions with greater fuel efficiency and improved engine performance [OPTIMAL PERFORMANCE] - OE technology provides the correct function and calibration to ensure trouble-free operation and emission compliance while providing up to 20 percent better fuel consumption [SUPERIOR DESIGN] - Bosch OE MAF sensors feature a patented design that increases robustness against water and particulate damage, reduces sensor drift, and lowers pressure drop [PRECISION CALIBRATION] - 100% new sensor and housing are calibrated and sold together (select part numbers only - housing will be shown in photos if included), ensuring precise sensor readings and optimal engine performance [TROUBLE FREE INSTALLATION] - OE identical connector ports and attachment points ensure an exact fit and a trouble free installation process Compatible with select vehicles (Note: engine affects fitment - verify specific vehicle fitment details with fit checker above): BMW: 1999-03 540i, 1999-01 740i, 1999-01 740iL, 2000-03 X5, 2003 Z8; LAND ROVER: 2003-04 Range Rover