aFe Twisted Steel Headers (48-36103) boost horsepower and torque for 2003–2006 Nissan 350Z and G35 with TIG-welded 304 stainless steel construction. These long-tube headers are mandrel-bent from 1-5/8 inch, 16-gauge 304 stainless steel for maximum flow and strength. Featuring 3-to-1 formed collectors, optimized tube lengths, and CNC-machined flanges, they are engineered for precise pulse control and long-term durability. In-house dyno testing on a 2003 Nissan 350Z showed gains of up to +9 horsepower and +12 lb-ft of torque with stock Y-pipe, and even more when paired with aFe’s performance Y-pipe (sold separately). These headers are a direct bolt-on installation using factory mounting points and require no cutting or welding.
Key Features :
1-5/8 inch 304 stainless steel primary tubes for strength and durability
Hand TIG-welded construction ensures leak-free performance
3-to-1 formed collectors reduce turbulence and improve exhaust velocity
Optimized tube lengths for true pulse control and performance gains
Dyno-proven gains of up to +9 horsepower and +12 lb-ft of torque
Direct bolt-on installation with no cutting or drilling required
Not CARB exempt—cannot be sold or used in California
Technical Notes:
This system is not CARB exempt and is not legal for sale or use on vehicles registered in California.
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