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©2004 Edelbrock Corporation
Catalog #67342
Page 1 of 2
Rev. 6/04
DC/mc
Edelbrock One-Piece Pro-Flo Header
For 1992-1995 Honda Civic Lx, Dx, Ex, Si
Catalog #67342
INSTALLATION INSTRUCTIONS
Please study these instructions carefully before installing your new Pro-Flo Header. They provide general guidelines to
be studied and understood before you remove your stock system. Failure to follow these instructions may void your
warranty. If you have any questions or problems, please contact our Technical Hotline at : 1-800-416-8628 from 7
am – 5 pm, Monday through Friday, Pacific Standard Time or e-mail us at Edelbrock@Edelbrock.com. Please fill out
and mail your warranty card.
DESCRIPTION: Edelbrock Pro-Flo header components are designed to improve the exhaust efficiency of the Honda Civic
1.5L & 1.6L engines. A performance gain can be expected with the installation of the system. This system requires no
welding for installation and retains all stock emissions equipment.
Suggested tools needed for installation: This vehicle has some metric fasteners.
❑ 3/8” ratchet socket set with extensions and a good assortment of metric sockets
❑ Combination wrenches (metric)
❑ Universal 12mm and 14mm swivel sockets
❑ Jackstands, screwdrivers, pliers, crescent wrench, etc.
❑ Liquid penetrant (GM #1052627 or equivalent); anti-seize compound (GM #5613695 or equivalent)
SPECIAL NOTICE: This Edelbrock part has received an Executive Order number (E.O.#) from the California Air Resources
Board (C.A.R.B.) making it legal for street use in all 50 states. To assist you with emission equipment certification, we
have included a silver fan shroud decal to help testing personnel verify the this part is a legal replacement on the vehicle
for which it is cataloged. The adhesive-backed decal should be affixed next to the existing emission and engine
specifications decal. Do not cover any part of your original emission decal.
WARNING: The use of "Thermal Wrap" or any aftermarket coating process will void the warranty on your Edelbrock
Headers. Those products will cause excessive heat and moisture buildup resulting in corrosion and failure of the header.
INSTALLATION INSTRUCTIONS
DISASSEMBLY
1. Disconnect battery negative cable from battery.
2. Raise vehicle and support with jackstand.
3. The use of penetrating oil when removing and
the use of anti-seize compound when installing
nuts and bolts will prevent the possibility of
broken or stripped nuts and bolts.
4. Make sure converter is cool.
5. Remove O
2
sensor (if applicable) being careful
not to destroy or rupture the unit.
WARNING: Do not clean this unit in any
cleaning solvents and do not rupture wire.
6. Remove the two nuts from hanger bracket.
Remove the two bolts and springs at the
catalytic converter. Then unbolt the three bolts
at the mid-section of manifold and remove lower
portion of manifold (B-section).
7. Remove the bolt that is attached to the engine
block in the lower section of manifold. Remove
bolts from manifold at cylinder head and pull
manifold out from top side. Note: Save all
factory nuts, bolts and springs to be used during
re-assembly.