DIY Headers Install


take you time, don't rush.
take the time to set-up your work enviroment.
disconnect the negative battery cable.
remove fuel rail covers.
remove plug wires.
disconnect the o2 sensors (just unplug the connectors, leave the sensors installed).
drop the mid-section (h or x) pipe.
unbolt and remove the dipstick tube.
unbolt and remove the existing exhaust manifolds, drop them out the bottom of the car.
remove the o2 sensors (label them for side and position front/back).
install the front o2 sensors into the headers.
position the headers in place, bringing them up from under the car.
position the header to head gasket, use two bolts to hold everything in place.
reinstall the dipstick tube, do not bolt in place yet.
install and tighten the remaining header bolts.
bolt down the dipstick tube.
connect the front o2 sensors, becareful to route them away from the headers, tie them back.
install and connect the rear o2 sensors, route the wires away from heat sources.
connect the rear section of the x/h pipe, let the front section hang down a bit (do not use the rear hangers yet).
lift the front of the x/h pipe and match it up with the collector and connect.
connect the rear midsection hangers.
push up and down on the midsection, retighten any and all bolts/clamps.
install the plug wires.
reconnect the battery.
start her up, let her idle for a few minutes (2+), shut her down, let her cool, recheck all your bolts.
start her up, take her for a drive, 50+ miles, bring her back. recheck all bolts and retorque as required.
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