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PLEASE study these instructions carefully before installing your new strut tower brace. If you have any questions, contact our
Technical Hotline at: 1-800-416-8628 from 7:00 am t- 5:00 pm, Monday-Friday, Pacific Standard Time or e-mail us at:
Edelbrock@Edelbrock.com.
• Application: Designed for 2005-2008 Ford Mustang GT with 4.6L 3V V8. This strut tower brace is much more effective than
other brands because it triangulates the front sturt towers to the vehicle firewall. The firewall mounting point virtually eliminates
all strut tower flex by transferring sideload into two mounting points instead of just one.
• Tools Needed: In addition to common hand tools, you will need the following:
❑ SAE wrenches
❑ Metric wrenches
Proper installation is the responsibility of the installer. Improper installation will void warranty and may result in
NOTE: 2007 & Later model vehicles equipped with the GT
appearance package will require the removal of the
plastic engine cover to install the strut tower brace.
1. Remove both the inside nuts from the top of the struts.
Install bracket #23-2147 on driver side and bracket #23-
2148 on passenger side over the stud where nuts were
removed. Just snug nuts at this time.
2. Pop up plastic covers on wiper arms and remove nut.
NOTE: Wiper arms will need to re-installed in the same
position as removed.
3. Remove plastic shrouding to gain access to the wiper well.
4. Position the main brace assembly. Install the 3" bolts into
the end of the main brace. Align the strut tower brace
assembly and end brackets to locate the position on the
firewall that will need to be drilled. Mark the firewall, then
remove main brace assembly and drill two 3/8" dia. holes
in the firewall.
5. Re-install the main brace assembly into position. Install the
reinforcing plate into the wiper well area, using supplied 3/8
button head bolts, washers, and nuts. Reinforcing plate
should sit on top on pinch weld at base of windshield. Drill
1/4 holes through pinch well and bolt using supplied 1/4
hardware.
NOTE: Check for clearance between strut tower brace and
any underhood components, A/C lines, cable, hoses, etc.
©2007 Edelbrock Corporation
Brochure No. 63-5223
Strut Tower Brace for 2005-2008 Ford Mustang GT
poor performance and engine or vehicle damage.
INSTALLATION INSTRUCTIONS
Edelbrock Corporation, 2700 California St., Torrance, CA 90503
Tech-Line: 800-416-8628
E-Mail: Edelbrock@Edelbrock.com
❑ Metric sockets
❑ 3/8" drill bit, and 1/4" drill bit
IMPORTANT NOTE:
6. Align the strut tower brace assembly. Tighten the factory
strut tower nuts and bolts first, then tighten the 3" bolts on
the main brace. Finally, tighten the firewall reinforcing plate
bolts.
7. Re-install plastic shrouding and winshield wipers.
NOTE: To further upgrade your Mustang suspension, use
other quality Edelbrock suspension products such as
springs, shocks, panhard rod, subframe connectors and,
upper and lower trailing arms.
Qty.
❑ 1
❑ 1
❑ 1
❑ 1
❑ 2
❑ 2
❑ 4
❑ 8
❑ 2
❑ 4
❑ 2
Catalog #5223
INSTALLATION INSTRUCTIONS
KIT CONTENTS
Description
Main Brace Assembly
End Support Bracket (Left) #23-2147
End Support Bracket (Right) #23-2148
Firewall Reinforcing Plate
3/8"-16" x 2-3/8" bolts (for end brackets)
3/8"-16" x 1" button head bolts
3/8" Nylock Nuts
3/8" AN Flat Washers
1/4-20 x 1" Bolt
1/4- AN Washer
1/4-20 Nyloc Nut
Catalog #5223
Rev. 9/07 - KS/mc
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