Sale

Exhaust› Headers, Manifolds and Components

Active

GEN 4 Header

$1,849.99 $1,812.99 Save $37.00

SKU: EXH-E46-HDR

Out of Stock
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Active Autowerke E46 M3 Gen 4 Header is a performance exhaust header designed to increase exhaust flow and eliminate restrictions that can rob horsepower. It is suitable for both naturally aspirated and supercharged forced induction applications. Constructed from 100% 304 stainless steel, this header features robust exhaust flanges with recessed mounting holes for easy installation. The factory exhaust catalysts are removed during installation, making this solution recommended for off-road applications.
Show original supplier description
The Active Autowerke E46 M3 Gen 4 Header is engineered to optimize exhaust flow and enhance performance without sacrificing power. Developed to create optimum flow and eliminate restrictions, this header is ideal for naturally aspirated and supercharged forced induction E46 M3 models. Its construction utilizes 100% 304 stainless steel, ensuring long-term durability and resistance to corrosion. The key features include the creation of optimum flow, elimination of restrictions, and dyno-tested improvements in HP and torque gains. The header boasts a polished 100% 304 stainless steel construction and offers precise, OEM-style fitment. It is important to note that the factory exhaust catalysts are removed with this header, and it is recommended for off-road applications. A Check Engine Light (CEL) may occur without the Active Autowerke Software Upgrade for off-road use. The product comes with an illustrated instruction manual and is backed by a two-year warranty.

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

BrandActive
Part NumberEXH-E46-HDR
CategoryExhaust
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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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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