BBK Performance 16325 User Manual

Revised 2/25/13

STEP 1

Disconnect negative battery cable.

STEP 2

Raise car and support on stands or place on car lift.

STEP 3

From under car, unplug rear O2 oxygen sensors. Loosen clamps at front of H-pipe. Remove

STEP 4

Remove four nuts and bolts on lower strut bar and remove bar.

STEP 5

Remove starter and unplug front O2 oxygen sensors at back of engine.

STEP 6

Unbolt steering shaft at rack and pinion connection and place shaft up out of the way.

STEP 7

Place a jacking device under the bell housing and remove the driver side motor mount from

Fig. 1

STEP 8

Remove exhaust manifold nuts. Jack up engine slightly to remove stock manifold and gasket.

STEP 9

Looking at the BBK header flange, remove the studs that correspond with the notches in the

stud to confirm which thread pitch to use.

STEP 10

Make sure head surface is clean and install supplied gasket over studs.

STEP 11

Remove O2 sensor from exhaust manifold and install in collector of BBK header. BE SURE

STEP 12

Position the BBK header in place over the studs and install the nuts and required bolts. This

STEP 13

Reinstall the motor mount and steering shaft. Lower engine back down.

STEP 14

Remove passenger side motor mount from engine and jack motor up. Remove the exhaust
manifold nuts and remove the manifold and gasket.

STEP 15

Remove studs in head to

correspond

to notched header flange. (Three on pass side)

STEP 16

Remove O2 sensor from stock manifold and install in collector of BBK header. BE SURE TO

APPLY ANTI-SEIZE.

STEP 17

Make sure head surface is clean and install supplied gasket over studs.

STEP 18

Install the header on the studs, install stock nuts, install supplied bolts and tighten all. Reconnect

STEP 19

Reinstall the starter.

STEP 20

Reinstall the catalytic converters and clamps at the H-pipe connections.

STEP 21

Reconnect the rear O2 sensor plugs.

STEP 22

Reinstall the lower strut brace.

STEP 23

Reconnect battery terminal and start engine to check for leaks.

STEP 24

Nuts and bolts should be rechecked for tightness after 500 miles or so.

INS158

2011-2014 FORD MUSTANG
GT 5.0L TUNED LENGTH
HEADERS PART# 1632/0/5

TOOLS REQUIRED- 8, 10, 13, 15, 22mm wrenches, 10, 13, 15mm sockets, ratchet, various length extensions, 3/8 drive
universal, ratchet, anti-seize.

You will be reusing most of the stock manifold studs for
header

installation.

catalytic converter nuts at exhaust manifolds. Remove converters.

the engine. This will give access to the bottom row of header nuts.

flange. On the driver side it’s the two rear studs. Those will be replaced with supplied bolts.

Fig. 2 NOTE: There are 2 thread pitches supplied, because the manufacturer changed the

thread pitched used after 2011, you will have to compare the supplied bolt to the factory

TO APPLY ANTI-SEIZE.

might require lifting the engine up a bit higher to get header in place. Install nuts and two
supplied bolts and tighten. BE SURE TO APPLY

SUPPLIEDD BOLTS.

Five required bolts are provided.

ANTI-SEIZE

ON THE NUTS AND

the O2 sensor plug. BE SURE TO APPLY

IMPORTANT- All appropriate safety equipment and gear must be used during the installation of this or any BBK Performance products or any time you work on a vehicle.
BBK Performance Inc. accepts no responsibility for injuries or damage caused by or during the installation of this product.

ANTI-SEIZE

ON STOCK NUTS AND SUPPLIED

Revised 2/25/13

ATTENTION:

Please follow the ECU Relearn procedure on page 3 before
driving on the road.

Fig 1. Motor Mount

Shows nut

removed.

access.

Fig.2 Shows notches where bolts will be

installed and studs removed

IMPORTANT- All appropriate safety equipment and gear must be used during the installation of this or any BBK Performance products or any time you work on a vehicle.
BBK Performance Inc. accepts no responsibility for injuries or damage caused by or during the installation of this product.