Owners manual

1986-93 Ford Mustang GT 5.0L
W/AOD Automatic Transmissions
Full Length Headers
Part # 1531/15310
2
INS-176
STEP 11
STEP 17
• Clean off all of the old gasket material from the
cylinder head surfaces.
STEP 15
STEP 14
• Repeat step 14 to install the passenger side
BBK Header. Tighten the header bolts and re-
install the starter.
• With the engine lifted, push the engine over to
the passenger side until you can slip the BBK
Header into place. Be sure to re-install the
dipstick tube with the header on the driver side.
Install the supplied gasket and using the
supplied header bolts to hold the header in
place.
• Re-install the steering shaft into the steering
column shaft and then to the rack joint.
STEP 12
• Remove the EGR crossover tube from the back
of the heads and remove the entire EGR tube
assembly.
STEP 13
• Remove both motor mount stud nuts where the
mount bolts to the frame and jack up the engine
so that the studs are clear of their mounting
pads. Use extreme caution when lifting the
engine.
STEP 16
• Lower the engine back down and re-install the
motor mount nuts. NOTE!!! Before tightening
the motor mounts make sure the engine is
sitting evenly and both studs are all the way
through the motor mounts leaving enough
clearance between the steering shaft and
header to prevent rubbing.
STEP 20
• Install the supplied studs in the collectors and
bolt up BBK Part # 1810 catted or # 1811 Off-
Road X-Pipe Assembly. Then reconnect the
rear flow pipes to the BBK X-Pipe.
STEP 19
• Remove the oxygen sensors from the stock
mid-pipe and install them into the collectors of
the BBK Headers. Reconnect them to the wire
harness plugs. NOTE!!! Be sure to add a
small amount of anti-seize to the top thread
of each oxygen sensor using the supplied
anti-seize packet. As you thread the oxygen
sensor back into the part the anti-seize will
spread evenly throughout the threads.
STEP 22
• The header bolts should be re-checked after
500 miles of driving.
STEP 21
• Reconnect the negative battery terminal. Start
the engine and check for any leaks.
STEP 18
• Install the spark plugs, wires, air intake
components, and engine fan shroud.
Hardware Included
• KIT001
o HDW114 Header Bolts (16pcs)
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)
• 00007 Gasket kit (1 set)