• AEM Cold Air Intake | 2018 Subaru WRX STI 2.5L (21-836WR)
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AEM Cold Air Intake | 2018 Subaru WRX STI 2.5L (21-836WR)

AEM Cold Air Intake | 2018 Subaru WRX STI 2.5L (21-836WR)

21-836WR

In stock

$316.73 USD
$349.99 USD $316.73 USD
kADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The AEM Induction 21-836WR Cold Air Intake System is a performance upgrade designed to improve airflow and engine response for the 2018 Subaru WRX STI with a 2.5L engine. Constructed to replace the restrictive factory air filter and housing, this intake allows the engine to breathe more freely, resulting in increased horsepower and torque. Engineered for optimal airflow, it enhances throttle response and overall efficiency while maintaining durability and quality standards. The system features a high-flow air filter and a custom intake tube, ensuring maximum performance gains and reliable operation under demanding conditions.

This cold air intake is a universal fitment tailored specifically for the 2018 Subaru WRX STI 2.5L models. It serves as a direct replacement for the stock intake, providing an easy bolt-on installation for enthusiasts seeking improved performance on street or track. The kit includes the intake tube, high-flow filter, and necessary hardware for installation. Designed for daily driving, spirited street use, or track days, this intake system helps maximize airflow and engine output without compromising reliability or drivability.

Overview

AEM Induction Cold Air Intake

Part #: 21-836WR

Overview

The AEM 21-836WR Cold Air Intake System is designed to enhance the airflow and performance of your 2018 Subaru WRX STI 2.5L. Crafted for enthusiasts seeking improved response and efficiency, this intake replaces the restrictive factory air filter and housing, allowing your engine to breathe more freely. The system is engineered to support optimal airflow, contributing to increased horsepower and torque, while maintaining reliable filtration. Its precise fit and high-quality materials ensure durability and consistent performance under various driving conditions, making it an ideal upgrade for those looking to maximize their vehicle’s potential.

Key Features

This cold air intake features a thoughtfully designed construction that emphasizes airflow efficiency and durability. Key features include:
  • Oversized AEM Dryflow synthetic washable air filter for outstanding filtration and airflow
  • High-quality, corrosion-resistant aluminum tubing with a smooth interior surface to reduce turbulence
  • Precision-tuned intake length for optimized air velocity and response
  • Reinforced silicone couplings for secure, leak-free connections
  • Easy bolt-on installation with minimal modifications required
  • Designed to fit specific Subaru WRX STI models for a perfect, secure fit

Construction & Design

The intake system is constructed from durable, lightweight aluminum with a smooth, polished finish that resists corrosion. The oversized Dryflow synthetic filter is washable and reusable, ensuring long-term performance and ease of maintenance. The design emphasizes unobstructed airflow paths and precise fitment, supporting consistent engine response and efficiency.

Driving Feel & Feedback

Installing this cold air intake helps improve throttle response and engine sound, providing a more engaging driving experience. The increased airflow supports smoother acceleration and a more immediate throttle feel, enhancing overall driving enjoyment without compromising reliability.

Installation & Fitment

The system is designed for straightforward installation, typically requiring basic hand tools. It mounts directly to the factory mounting points on your Subaru WRX STI, with no need for cutting or permanent modifications. Fitment should be verified against your vehicle’s specific model and year.

What’s Included

The package includes the oversized Dryflow synthetic washable air filter, aluminum intake tube, silicone couplings, mounting hardware, and detailed installation instructions.
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