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

Turner Motorsport

CSL Airbox Intake

Name: CSL Airbox Intake
Brand: Turner Motorsport
SKU: 003313TMS01KT

$3,345.99 $2,434.21 Save $911.78

SKU: 003313TMS01KT

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

It achieves a 20% increase in airflow over the factory airbox and improves flow compared to the OEM CSL box. This complete kit includes all necessary components for installation, transforming your M3 in an afternoon. A tune is required for operation.

Show original supplier description

The Turner Motorsport CSL Style intake kit is engineered to elevate the performance and sound of the E46 M3, drawing inspiration from the sought-after CSL model. By altering and improving the OEM CSL airbox design, this intake system boasts a 20% increase in airflow over the standard factory airbox, and even offers a marginal improvement over the BMW-designed CSL box itself. This results in a more responsive engine and a captivating intake symphony. This comprehensive kit includes everything needed for installation, transforming your M3's intake system in approximately an afternoon. However, it is crucial to note that an Alpha N tune is required for proper operation. Additionally, for US vehicles with a production date of 09/2004 and later, the original PCV recirculation hose must be re-used and modified. The included silicone hose will need a fitting removed and then spliced into the factory PCV hose to maintain PCV functionality. Please 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. It is specifically designed for the BMW E46 M3 with the S54 3.2L engine and SMG transmission.

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	003313TMS01KT
Category	Air and Fuel

Videos

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

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

E46 M3 Turner Motorsports CSL Box Fly By; RAW Sound

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

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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