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Returns Accepted: ReturnsNotAccepted Warranty: No Part Brand: Pro Zen Motorsports Item Condition: Brand New Intake Pipe Material: Polished Aluminum T6061 Air Filter Brand: K&N Filter Well a lot of BMW 545 guys HAVE been waiting!!! Tired of the 3.5" diameter Over priced Stage 1 intake for your 4.4V8 545i Beemer. Heres the big Daddy of them all.. BIG 4" O.D. Diameter with Huge K&N Filter. Introdu...