CSL style large volume carbon fiber airbox to suit the. BMW E46 M3 with the.This is genuine vacuum formed carbon fiber made in the EU. CSL style with internal trumpets and aluminium joiners, built to suit the original CSL filter (not included). Good improvements in noise and hp to be had. Made to order, 3-5 week lead time. The item "BMW E46 M3 CSL Style Large Volume Carbon Fiber Intake Airbox 3.2 S54 engines" is in sale since Sunday, September 29, 2019. This item is in the category "Vehicle Parts & Accessories\Car Tuning & Styling\Air Intake & Induction\Performance Airboxes". The seller is "rennsportfactory" and is located in Launceston. This item can be shipped worldwide.