Owners manual

Installation Instructions
2841 W. Clarendon ● Phoenix, AZ 85017 ● Phone [phone] ● Fax [phone]
http://www.pacesetterexhaust.com
#70-1133 #72C1133 2000/06 Jeep Wrangler 4.0 L, Incl. Unlimited & Rubicon
Before beginning installation, read and make sure you understand all instructions, and have necessary
equipment at hand.
WARNING: Before working on the vehicle, make sure that it is well supported by jack stands or
ramps of sufficient load capacity for the weight of the vehicle. NEVER work on any vehicle which
is supported only by its service jack.
1. Disconnect battery. Raise vehicle on lift (preferred), or on jack stands or ramps.
2. Disconnect all four 02 sensors. Unbolt catalytic convertor / Y-pipe assembly from bottom of exhaust
manifolds. Unbolt Y-pipe outlet flange and remove Y-pipe.
3. Remove lower intake manifold bolts.
4. Remove radiator overflow bottle. Remove drive belt, unbolt power steering pump and lay off to the side.
5. De-pressurize fuel loop and disconnect fuel line. Remove air cleaner duct. Disconnect wire harness and
vacuum hoses. Disconnect throttle linkage and remove intake manifold.
6. Remove remaining manifold bolts and remove exhaust manifolds. Remove O2 sensors from exhaust
manifolds. They will be installed in new header.
7. Clean gasket surface at cylinder head. Apply a high temperature gasket sealer such as Permatex Ultra-
Copper on gasket supplied with kit. Install header with original nuts on end studs, and one original bolt and
washer in center hole.
8. Re-install intake manifold with remaining original bolts and shim washers supplied with header kit.
These washers must be aligned so that the step is toward the intake manifold. The washer will be parallel
with the cylinder head when installed properly.
9. Torque header bolts from center out in stages. Final torque should be 18 ft.lbs.
10. Install original O2 sensors into fittings on new header. Reinstall Y-pipe.
11. Reconnect wire harness, vacuum lines and fuel line.
12. Remove jack stands and lower vehicle. Re-connect battery and start engine.
Check for exhaust leaks, rattles, clearance problems. Correct if necessary.