Owners manual

2007-2011 Jeep Wrangler 3.8L V6
Full Length Headers W/ Y-Pipe
Part #4050,40500,4051,40510
2
INS-188
STEP 7
• Re-install the factory head pipe and muffler, and
then tighten all connections.
• NOTE!!! The photo above shows the Y-Pipe
as one piece. The Y-Pipe comes in 2 pieces
and uses a supplied coupler. Install the Y-
Pipe and only snug the hardware at the
collectors and coupler. Re-install the cross
member. Be sure to check the clearances
around the Y-Pipe. Then tighten all the
connections starting with the coupler, ensuring
that both tubes are straight and aligned
properly. Then tighten the collectors.
STEP 8
STEP 10
• Transfer the oxygen sensors from the stock
manifolds over to the BBK Full Length headers.
STEP 9
• Using the oxygen sensor extensions reconnect
all of the oxygen sensors. NOTE!!! The longer
oxygen sensor extension is used for the Y-
Pipe.
• Zip tie the Y-Pipe oxygen sensor extension
away from the exhaust along the cross member.
• Re-connect the negative battery terminal. Check
all hardware after 100 miles of driving.
Coupler
Hardware Included
• KIT007
o HDW152 Stud, M12-1.75x65MM (4pcs)
o HDW040 Hex Nut, M12-1.75 (4pcs)
o HDW021 Lock Washer ½” (4pcs)
o HDW023 Flat Washer ½” (4pcs)
• CHD343 12” Oxygen Sensor Extension (2pcs)
• CHD343-1 24” Oxygen Sensor Extension (1pc)
• 00105 Gasket Kit (1pc)