aFe Twisted Steel 304 Stainless Steel Header w/ Cat

Fits 2013–2019 Subaru Outback with H4-2.4L engine

Part #: 48-36804-HC

Overview

The aFe Twisted Steel header system is crafted from high-quality 304 stainless steel tubing, measuring 1-5/8 inches to 2-1/2 inches in diameter, ensuring maximum strength, durability, and resistance to corrosion. Designed specifically for the Subaru Outback with the H4-2.4L engine, this system enhances exhaust flow and supports improved engine response. The inclusion of a less restrictive catalytic converter helps optimize exhaust flow, contributing to better performance and efficiency without sacrificing emissions compliance. Its factory-style flanges allow for a direct bolt-on installation, requiring no cutting or modifications, making it an ideal upgrade for enthusiasts seeking a straightforward, high-performance exhaust solution.

Key Features

This header system features mandrel-bent tubing for smooth, unrestricted airflow and optimized tube lengths for true pulse control technology, which helps improve exhaust scavenging and overall engine efficiency. The system is designed to fit seamlessly into the stock location, providing a hassle-free upgrade with a precise fit. Constructed from durable stainless steel, it offers long-lasting performance and resistance to heat and corrosion. The inclusion of a catalytic converter ensures compliance with emissions standards while supporting maximum flow and power gains. Its robust construction and optimized design make it an excellent choice for drivers looking to enhance their vehicle’s performance and sound.

Construction & Design

Built from high-grade 304 stainless steel, this header system features mandrel-bent tubing for optimal airflow and durability. The factory-style flanges ensure a secure, leak-free connection, and the system’s precise engineering allows for a direct bolt-on installation without modifications. The catalytic converter is designed to be less restrictive than stock, supporting improved exhaust flow while maintaining emissions compliance.

Driving Feel & Feedback

This header system helps improve exhaust flow, which can lead to a more responsive throttle and a more aggressive engine note. The optimized pulse control technology enhances overall engine response, providing a more engaging driving experience.

Installation & Fitment

Designed for a straightforward, bolt-on installation, this system fits directly into the stock locations on the Subaru Outback with no cutting or welding required. Properly fitted, it offers a hassle-free upgrade that maximizes performance and durability.

What’s Included

The package includes the mandrel-bent stainless steel headers, a catalytic converter, and all necessary hardware for installation.