Installation Manual
2005-09 Ford Mustang GT & GT500 
Long Tube Headers 
Part # 1641,16410,16415 
1649,16490,16495
2 
INS-107 
STEP 6
STEP 8
•  Remove the bolts from the top and bottom of 
the steering shaft and remove the shaft. You 
may find more working space by removing 
the motor mounts from the engine by 
removing the nuts that secure the mounts to 
the K-Member and carefully jacking the 
motor up and supporting it with a block of 
wood, then removing the fasteners that 
attach the mounts to the engine block. DO 
NOT ATTEMPT TO LIFT THE ENGINE BY 
JACKING UNDER THE OIL PAN.  
STEP 7 
•  Remove the stock exhaust manifold and gasket. 
(Some of the manifold bolts are easier to access 
while working under the hood) 
•  Install the BBK Header and supplied gasket. 
NOTE!!!
 On some applications it may be 
easier to re-use some of the original style 
stud type hardware. 
•  Insert and finger tighten the supplied collector 
studs, and re-install the motor mount and 
dipstick tube. 
Driver Side 
STEP 9



