ISR Performance O2 Sand Cast Turbine Outlet - Nissan SR20DET

Factory Nissan SR20DET O2 housing are extremely restrictive, ISR Performance Cast 3" O2 Housing are substantially larger allowing the exhaust to flow more efficiently compared to stock ISR Performance Cast O2 Housing is a true 3" O2 housing as Most other O2 housings are 2.7".

What’s in the Box:

• 1x O2 Sand Cast Turbine Outlet 
• 1x 5 bolt exhaust gasket
• 1x 3 bolt exhaust gasket
• 3x Exhaust studs
• 3x nuts
• 3x lock washers

Legal only for use in competition vehicles which may never be registered, licensed, and/or used on public streets or highways; and also for use in other exempted vehicles.