Check to make sure you received the proper parts for your application. The header number will be stamped on the engine flange. If you are unsure you have received the proper
parts call before you start work.
Be sure to work safe! Whenever you work under the vehicle be sure that it is located on
level, solid ground and is supported by adequate safety stands! Remember: Hot asphalt
will not support most jack stands!
Many factors affect the installation of headers, some of which are broken or aftermarket
motor mounts, accidents that impact the configuration of the frame, and/or the installation
of different engines or aftermarket cylinder heads.
Attention Customers breaking in new engines: Due to the extreme heat generated during the break-in process, the appearance of the ceramic coating may be altered in certain
areas. The protection characteristics and thermal barrier properties of the coating is never
compromised. It is recommended that a cast iron manifold or old set of headers be used
for this process.
Notice: The coating of these headers can be marred or scratched during installation. If the
header needs to be returned and is damaged, you will be charged for recoat.
JBA uses sealing beads on all its headers. We have found that when installed correctly, the
raised bead around each port increases the pressure exerted on the gasket directly adjacent to
the port and effectively prevents leaking gaskets. It is normal for the flange to be raised off the
cylinder head the thickness of the sealing bead. It is important when installing the header, to install all bolts loosely, then tighten evenly to ensure the flat installation of the flange. The torque
sequence from one flange to another will vary, but generally every bolt on a header should be
first fit snug, starting from the inside of the flange working out, alternating from top to bottom
so that the bolt connects the flange to the manifold to the point where they barely touch. Second, using the same inside-out pattern, tighten each bolt until finished. This method will help
prevent leakage and will give the user the best possible performance out of their pair of headers.
1. Place vehicle in a location where the floor is solid and flat, with adequate lighting. Do not
attempt to work on a hot engine. Heat causes metal to expand and makes removal of fasteners
difficult at best. Disconnect the battery cables from the battery. Raise the front of the vehicle to
obtain adequate access to the bottom exhaust manifold flanges. Use large-base jack stands to
support the vehicle. Do not rely on the jack! Block the tires to prevent the vehicle from rolling
off the jack stands.
2. Spray WD-40 or some type of penetrating oil on all accessible fasteners and fittings before
attempting to remove them.
3. From underneath the vehicle disconnect the Y-pipe from the exhaust manifold.
4. Remove the nuts attaching the heat shields to the factory manifolds. Then unbolt and remove
the manifolds.
5. Using a gasket scraper, remove all carbon deposits and high spots from head surface. At this
time apply a high temperature sealer to exhaust pipe flare in order to avoid problems due to lack
of space later on in the installation.
6. Using the supplied gaskets and fasteners install the new headers. Be sure to prepare the new
header bolts by applying a small amount of anti-seize to the threads before installing. Torque the
fasteners to 23 ft./lbs.
7. Reconnect the exhaust system to the headers using the supplied hardware. Torque the fasteners to 35 ft./lbs.
8. Check to make sure there is adequate clearance on plug wires, battery cables, wire looms,
brake lines, etc.
9. Re-connect battery cables.
10. Recheck everything!
11. Start the engine and let it warm up. Check for leaks. Shut engine off and let it cool down.
Check to make sure all fasteners are tight.
12. All tubular headers require maintenance including periodically checking and retightening of
the header bolts.
Parts List:
(1) Driver’s Side Header Assembly
(1) Passenger’s Side Header Assembly
(16) 8mm -1.25 x 25mm header bolts &lock washers
(2) Header gaskets (Header to Head flange)
(4) 3/8” x 2 1/2” Collector Bolts, Nuts & Washers.
(2) Cable ties
Applicable for 04-06 ONLY!
LIMITED ONE YEAR WARRANTY
All JBA HEADERS and exhaust products are guaranteed, to the original purchaser, to be free of defects in materials and workmanship for one year. This warranty
covers the replacement or repair of the product only and does not cover the cost
of removal and installation, customer applied aftermarket coatings or any discolor-
ation or corrosion of nished surfaces.
Damage or product failure resulting from collision, improper installation, off-road
use, road hazards, the use of exhaust insulating wrap or like products or rust occurring after installation, is not covered by the warranty. The warranty extends only
to the original purchaser.
Should a part become defective it should be returned to the original selling retailer
and must be accompanied with the sales receipt. If there is no retailer in your area,
call the factory for a return authorization and return your part prepaid to the factory
for inspection. PerTronix reserves the rights to replace or repair the alleged defective part and return the part freight collect.
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