aFe 48-38031 Twisted Steel Stainless Headers for 21-25 Jeep Wrangler 392 6.4

Vehicle Fitment

• 2021-2024 Jeep Wrangler Unlimited Rubicon 392 (V8 6.4L HEMI)
• 2024-2025 Jeep Wrangler Unlimited Rubicon 392 Final Edition (V8 6.4L HEMI)

Features

• Twisted Steel Series performance exhaust headers for improved flow
• Constructed from mandrel-bent 304 stainless steel for strength and corrosion resistance
• 1-7/8" to 3" primary tubing with heavy-duty flanges for leak-free sealing
• Mitered merge collectors reduce turbulence and enhance scavenging
• Retains factory O2 sensor locations for seamless integration
• Direct bolt-on fit - no cutting or modifications required
• Up to ~11 hp and ~13 lb-ft torque gains over stock manifolds
• 100% MIG-welded for race-proven durability

Specifications

• Brand: aFe Power
• Part Number: 48-38031
• Series: Twisted Steel Stainless Headers
• Material: 304 stainless steel
• Piping: 1-7/8" → 3" mandrel-bent tubing
• Collector: Mitered merge design
• Installation: Direct bolt-on
• Emissions: EPA Federal compliant (not CARB exempt/legal in CA/CO/NY/ME)
• Warranty: Manufacturer 2-year limited warranty

Included Components

• 1x Left twisted steel header
• 1x Right twisted steel header
• Header flanges and mounting hardware

Product Description

The aFe Power 48-38031 Twisted Steel Stainless Headers are a high-flow performance upgrade engineered for **2021-2024 Jeep Wrangler Unlimited Rubicon 392** and **2024-2025 Wrangler 392 Final Edition** equipped with the **6.4 L V8 HEMI engine**. Built from mandrel-bent 304 stainless steel, these headers replace restrictive factory manifolds with a design that improves exhaust gas flow, enhances throttle response, and increases horsepower and torque - with gains up to approximately +11 hp and +13 lb-ft torque.

Featuring heavy-duty laser-cut flanges and mitered merge collectors, the 48-38031 headers reduce exhaust turbulence while maintaining a direct bolt-on installation that retains factory oxygen sensor locations and does not require cutting or modification of the stock exhaust system. Precision engineering and 100% MIG-welded construction ensure long-lasting durability and a secure, leak-free fit. Note that while this part meets Federal emissions standards, it is not CARB exempt and may not be legal for sale or use in certain states that require California emissions compliance.