Looking for a quick upgrade to you 3.5L engine? Khaos Motorsports has the answer with our helix bore throttle body spacer. CNC Machined from high quality 6061 aluminum, our spacer will be a direct bolt on to your vehicle and last for years to come!Developed to enhance off-idle torque from 800 rpm to approximately 3,000 rpm, Helix Bore design spins the incoming air charge as it passes through the throttle body spacer. This spinning action boosts the velocity of the incoming air and contributes to better atomization of the air/fuel mixture as the air charge enters the combustion chamber. The end result is more part-throttle torque, improved mid-range power, and overall combustion efficiency for better fuel economy. 2001 to 2004 Nissan Pathfinder 3.5L V6 models 2001 to 2004 Infiniti QX4 3.5L V6 models 2002 to 2004 Infiniti I35 3.5L V6 models 2002 to 2009 Nissan Altima 3.5L V6 models 2002 to 2009 Nissan Maxima 3.5L V6 models 2003 to 2006 Nissan 350Z 3.5L V6 models 2003 to 2006 Infiniti G35 3.5L V6 models 2003 to 2008 Infiniti FX35 3.5L V6 models 2003 to 2009 Nissan Murano 3.5L V6 models 2004 to 2009 Nissan Quest 3.5L V6 models 2006 to 2008 Infiniti M35 3.5L V6 models 2003-2006 03-06 Nissan 350Z 3.5L Engines. 2003-2006 03-06 Nissan Murano 3.5L V6 Engines. 2003-2006 Nissan Altima SE 3.5L V6 Engines. 2003-2006 Nissan Maxima SE 3.5L V6 Engines 2002-06 Nissan Maxima SE 3.5L V6 2003-04-05-06 Nissan 350Z 3.5L 2003-2006 Nissan 350Z Infiniti G35