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Air and Fuel› Air Cleaners, Filters, Intakes and Components

Turner Motorsport

CSL Airbox Kit

Name: CSL Airbox Kit
Brand: Turner Motorsport
SKU: 003313TMS01KT5

$2,957.99 $2,109.74 Save $848.25

SKU: 003313TMS01KT5

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

It alters and improves the OEM CSL airbox, achieving a 20% increase in airflow over the factory airbox and marginally improved flow compared to the BMW CSL box. This complete kit includes all necessary components except for a tune.

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Drawing inspiration from the legendary E46 CSL M3, this intake system aims to replicate and improve upon the sought-after CSL airbox design. Through careful alteration and enhancement, Turner Motorsport has achieved a claimed 20% increase in airflow over the standard factory airbox, and even marginal improvements over the OEM CSL box itself. This comprehensive kit provides all the components required for a complete transformation of your vehicle's intake system, suitable for installation within an afternoon. It is important to note that the installation of this intake will require the use of an Alpha N tune to optimize performance. For US vehicles manufactured from September 2004 onwards, a modification to the original PCV recirculation hose will be necessary; the included silicone hose will need to have a fitting removed and then be spliced into the factory PCV hose to maintain PCV functionality. It is crucial to be aware that this product is not for sale or use in the state of California on any pollution-controlled vehicle, as per the California Air Resources Board regulations. The kit is specifically designed to fit the BMW E46 M3 S54 3.2L, BMW Z3 M Coupe S54 3.2L, BMW Z3 M Roadster S54 3.2L, BMW Z4 M Coupe S54 3.2L, and BMW Z4 M Roadster S54 3.2L.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	Turner Motorsport
Part Number	003313TMS01KT5
Category	Air and Fuel

Videos

HOW TO Turner Motorsport E46 M3 CSL Airbox Installation: Dipstick Modification and Mounting DIY

E46 M3 Turner Motorsports CSL Box Fly By; RAW Sound

E46 M3 CHEAP CSL Intake Vs TURNER Motorsport CSL Intake - Review

UNBOXING and REVIEW OF DESIGN THE NEW TURNER MOTORSPORTS CSL AIRBOX IS IT THE BEST FOR YOUR E46 M3?

E46 M3 Turner Motorsport CSL Intake Dyno [4K]

BMW E46 M3 Turner Motorsports Carbon Fiber Diffuser! How to install DIY & First Impressions

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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