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

Cobb

Redline Carbon Fiber Intake

$875.00

SKU: COBB725350

Special Order
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 Cobb Tuning Redline Carbon Fiber Intake is an engine air intake system designed for the 2015-2021 Subaru WRX STI. It features a carbon fiber airbox lid with low thermal conductivity to reduce heat soak and a polished aluminum intake tube. The intake includes a high-flow cone filter and retains the MAF sensor for accurate air mass measurement.
Show original supplier description
The Cobb Redline Carbon Fiber Intake seamlessly blends performance and aesthetics for the 2015-2021 Subaru WRX STI. The system incorporates a 35% larger pre-oiled air filter, a black anodized billet aluminum adapter for the MAF housing, and a wire-reinforced black silicone coupler. For increased airflow and a more pronounced intake sound, a second billet plate can be removed from the fender side of the airbox. The Mass Air Flow (MAF) sensor housing features a custom conical air filter, a CFD-designed velocity stack, and an airflow straightener grid to ensure precise readings and minimize turbulence. The Redline Carbon Fiber Intake is compatible with existing COBB Off The Shelf (OTS) Maps that support the standard SF Intake, including Stage 1+SF and Stage 3 OTS Maps for 2015-2021 STIs. For a complete list of compatible maps, consult the COBB website's Maps Section. Note that this intake system will not fit with the COBB Radiator Shroud.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandCobb
Part NumberCOBB725350
CategoryAir and Fuel
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy