aFe Twisted Steel 409 Stainless Steel Shorty Header

Fitment: Jeep Wrangler YJ (91-99)

Part #: 48-46201

Overview

The aFe Twisted Steel 409 Stainless Steel Shorty Header is a high-performance exhaust component designed specifically for Jeep Wrangler YJ models equipped with the 4.0L I6 engine. Crafted from durable 409 stainless steel, this mid-length tube header enhances exhaust flow, supporting improved engine response and efficiency. Ideal for enthusiasts seeking to optimize their vehicle’s power delivery and sound, these headers combine advanced engineering with rugged construction to deliver reliable performance and a refined exhaust note. Whether you're upgrading for increased responsiveness or enhancing your vehicle’s sound profile, this header offers a significant upgrade over stock components.

Key Features

This header features a meticulously designed tube and collector layout to maximize flow and velocity, ensuring your engine breathes more freely. Constructed with precision TIG welding, it guarantees durability and consistent quality. The mid-length tube design balances performance gains with ease of installation, making it suitable for both experienced mechanics and DIY enthusiasts. The use of 409 stainless steel provides excellent corrosion resistance, ensuring longevity even in demanding conditions. Pulse control technology integrated into the design helps optimize exhaust pulses for smoother flow and improved power across the entire RPM range. The header’s compact shorty style maintains clearance and fitment within the engine bay, making it an effective upgrade without extensive modifications.

Construction & Design

Built from high-grade 409 stainless steel, this header is engineered for durability and corrosion resistance. The mitered collector and precisely bent tubes are designed to promote optimal exhaust flow, reducing backpressure and enhancing engine efficiency. The TIG welding process ensures strong, reliable joints that withstand heat and vibration, providing a long-lasting performance upgrade.

Driving Feel & Feedback

Installing this header can improve throttle response and engine sound, giving your Jeep a more aggressive and refined exhaust note. The enhanced flow characteristics support better engine breathing, which can translate into more immediate throttle response and a more engaging driving experience.

Installation & Fitment

Designed as a direct bolt-on replacement for the stock headers on Jeep YJ models with a 4.0L I6 engine, installation typically requires basic mechanical skills. Proper fitment should be verified against the vehicle’s specifications and the part number provided.

What’s Included

The package includes the aFe Twisted Steel 409 stainless steel shorty header, hardware necessary for installation, and gaskets if specified in the product details. Additional components or modifications are not included.