Installation Manual
2010-2013 Chevy Camaro V8 
Full Length Headers 
Part # 4021,40210,40215 
4031,40310,40315
2 
INS-149 
STEP 10 
STEP 15 
•  From underneath the vehicle, position the 
headers onto the heads and install a bolt or two 
to hold them in place. 
STEP 12 
STEP 11 
•  Transfer all 4 oxygen sensors from the stock 
exhaust manifolds and mid-pipes to the BBK 
Headers and cat/off-road sections. NOTE!!! Be 
sure to add a small amount of anti-seize to 
the top thread of each oxygen sensor using 
the supplied anti-seize packet. As you thread 
the oxygen sensor back into the part the 
anti-seize will spread evenly throughout the 
threads.
•  From above, position the gaskets in place and 
install all the supplied header bolts and tighten. 
First torque them to 11ft lbs then to 18ft lbs. 
•  Install the supplied studs into the header 
collector flanges. 
STEP 14 
•  Reconnect all 4 oxygen sensor plugs. 
STEP 13 
•  Install the supplied cat sections or off-road pipe 
sections to the collectors using the supplied 
hardware. Slide the stock exhaust clamps over 
the pipes to connect to the rear. Position the 
oxygen sensor bungs at a slight upward angle. 
Tighten the clamps and collector nuts. 
STEP 16 
•  Re-install spark plugs, wires, oil dipstick and 
tube. Re-install the air box and inlet tube. 
Reconnect the breather hose and Mass Air 
Sensor Plug. 
STEP 17 
•  Remove the oil cap and re-install the engine 
cover and replace the oil cap. Reconnect the 
battery and start the engine to check for any 
leaks. Re-torque the header bolts after about 
100 miles of driving. 



