Reviewed By Brett C (ATLANTA, GA) Reviewed for a 2011 Chevy Avalanche —1/18/2015 11:00 AM
The install instructions are poor at best. Many more steps required than listed in guide.
Reviewed By Robert M (MEMPHIS, TN) Reviewed for a 2012 Chevy Avalanche —6/4/2014 9:07 PM
These headers instantly provided more HP and gas mileage. If you are on the fence about purchasing headers, you shouldn't be, these headers are exactly what I was hoping for. I've purchased a cold air intake, gibson dual exhaust and superchips power programmer over the past years. The headers provided the most noticeable HP and MPG gains. Only issue was the lack of detailed instructions when removing exhaust manifolds. Additional tools required, O2 sensor removal required and not mentioned.
Reviewed By Nick M (LONGWOOD, FL) Reviewed for a 2013 Chevy Silverado —12/31/2014 10:51 PM
These headers will fit on silverados all the way up to 2013 (mine). Headers went on great looks good. Should be noted that the y-pipe should go on first for ease of installation. Also it has no rear o2 port holes
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