Twisted Steel Headers | 48-36103

aFe Power is proud to introduce the Twisted Steel Street Series Long Tube Headers for the Nissan 350Z and Infiniti G35. Engineered for performance enthusiasts, these headers are designed to unlock the hidden horsepower and torque potential of the VQ35DE engine—delivering real gains in throttle response, exhaust tone, and overall driving excitement.

Featuring 1-5/8” to 1-3/4” stepped primaries and mandrel-bent, 16-gauge 304 stainless steel tubing, these headers offer superior flow and strength. Each header is crafted with optimized tube lengths for improved scavenging and performance across the RPM range. The thick, laser-cut flanges ensure a leak-free seal, and the TIG-welded construction offers lasting durability even in high-heat applications.

Designed as a direct bolt-on for race or off-road use (not CARB legal), these headers eliminate the factory catalytic converters and are intended for use with aFe’s matching Y-pipe or other aftermarket mid-pipes. If you’re looking for a dramatic boost in both sound and power, this is the upgrade you’ve been waiting for.

Features

• Designed for 2003–2007 Nissan 350Z / Infiniti G35 (RWD, VQ35DE engines)

• Stepped 1-5/8” to 1-3/4” mandrel-bent stainless steel primaries for maximum flow

• Long tube design with optimized tube lengths for improved torque and horsepower

• Heavy-duty 3/8" thick flanges for a warp-resistant, leak-free seal

• Precision TIG welds and brushed finish for premium quality and durability

• Eliminates restrictive factory cats for maximum exhaust flow (for off-road/race use only)

• Backed by aFe’s limited warranty

• Not CARB legal – for off-road use only

Includes

• Left and right long tube headers

• Header gaskets and installation hardware

• Detailed installation instructions 

Vehicle Fitment

• Infiniti G35 Base 2003
• Infiniti G35 Base 2004
• Infiniti G35 Base 2005
• Infiniti G35 Base 2006
• Infiniti G35 X 2004
• Infiniti G35 X 2005
• Infiniti G35 X 2006
• Nissan 350Z 35th Anniversary Edition 2005
• Nissan 350Z Base 2003
• Nissan 350Z Base 2004
• Nissan 350Z Base 2005
• Nissan 350Z Base 2006
• Nissan 350Z Enthusiast 2003
• Nissan 350Z Enthusiast 2004
• Nissan 350Z Enthusiast 2005
• Nissan 350Z Enthusiast 2006
• Nissan 350Z Grand Touring 2005 
  
• Nissan 350Z Grand Touring 2006 
  
• Nissan 350Z Performance 2003 
  
• Nissan 350Z Performance 2004 
  
• Nissan 350Z Performance 2005 
  
• Nissan 350Z Touring 2003 
  
• Nissan 350Z Touring 2004 
  
• Nissan 350Z Touring 2005 
  
• Nissan 350Z Touring 2006 
  
• Nissan 350Z Track 2003 
  
• Nissan 350Z Track 2004 
  
• Nissan 350Z Track 2005 
  
• Nissan 350Z Track 2006

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