Genuine BMW Z3 M Secondary Air Injection Pump

The Z3 M Secondary Air Injection Pump from BMW pumps in fresh air to the exhaust, reducing cold-start emissions and awakening the catalytic converters early. These pumps are praised for their sealed bearings and a corrosion-resistant shell that can endure years of spirited driving. Installed on every performance-tuned Z3 M from 1998 to 2002, it suits the early belt driven and later electric layouts. Owners could then mix and match knowing there wouldn't be any issues. The catalog of BMW parts indicates that the Secondary Air Injection Pump is the single approved emission aid for all Z3 M variants with S52 or S54 powerplants globally. Through the pressurization of ambient air, the Secondary Air Injection Pump quickly brings the dual catalysts to operating temperature and aids in the accuracy of the oxygen sensors while reducing fuel consumption. A diverting gas path internal to the converter inhibits flame transmission on throttle lift. This provides additional safety to valves and mufflers. A one-way check valve connected to the Secondary Air Injection Pump blocks hot gas and increases service life. The on-board diagnostics quickly identify low flow rates, preventing small hose leaks from causing expensive damage. The Secondary Air Injection Pump takes a compact form and sits low in the bay beside the illustrious BMW straight six, keeping weight down and protecting the Z3 M's balanced handling for which it is famous. Owners of track-focused Z3 M machines appreciate the lightweight yet beneficial operation of the Secondary Air Injection Pump, which means cleaner power, a win-win for BMW purists. The pump of this secondary air injection system operates quietly, which makes early morning departures neighbor-friendly. The factory calibration, which needs no additional tuning, demonstrates the engineering depth that allows the BMW badge to continue communicating reliable fun for one and all BMW Z3 M fans.

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