Stillen 508560 Stainless Steel Truck Header 04-09 Infiniti QX56 5.6L
These new STILLEN headers yield maximum power - 29 HP increase with 27 FT/LBs of torque at max gain. These are precision crafted from Stainless Steel and feature a limited lifetime warranty. As they eliminate catalytic converters, these are for OFF ROAD USE only. Shipped with an O2 signal emulator to defeat check engine lights. Check with us for use in forced induction applications.