3
WARNING!
- Do not rely on bumper jacks or chassis jacks for support during header installa-
tion. The subject vehicle should be raised and supported with jacking equipment and
jackstands or ramps intended for undercarriage auto maintenance. It is extremely dangerous to
work under an improperly raised and/or supported vehicle.
WARNING!
- Make certain there is ample clearance around components such as brake lines,
brake proportioning valves, fuel lines, hoses and pumps, and electrical components and wires.
In some cases it may be necessary to relocate items that may be adversely affected by exhaust
system heat.
NOTE:
These procedures are documented on factory standard-equipped vehicles with original
configuration compliance. Any modification of the subject vehicle may dictate modification to
these procedures.
INSTALLATION PROCEDURES
1) Disconnect the battery.
2) Raise the front of the vehicle approximately 24 inches and support it with jack stands or
other suitable supports. (
WARNING!
- Do not rely on bumper jacks or chassis jacks for
support during header installation. The subject vehicle should be raised and supported
with jacking equipment and jackstands or ramps intended for undercarriage auto
maintenance. It is extremely dangerous to work under an improperly raised and/or
supported vehicle.)
3) Disconnect the O2 sensor harness from the motor. Remove the front two O2 sensors from
each side of the catalytic converter pipes.
4) Remove the catalytic converter pipes. Be careful not to damage the facctory gaskets as
they will be reused with the new headers.
5) Begin to remove the passenger side manifold bolts. Retain all hardware as it will be
reused with your new headers.
6)
To remove the passenger side manifold and heat shield it will be necessary to raise the
motor up approximately 2”.
To do this you first must find a suitable place to support the
engine. Then remove the main center bolt, the two bolts attached to the engine and the
engine mount heat shield.
THY-470
NISSAN/ SUZUKI 4.0L
FRONTIER, PATHFINDER, XTERRA/
EQUATOR, 2005-12, 2/4WD
