Edelbrock 5728 User Manual

Edelbrock Cat-Back Exhaust System

For 2001-2006 Suburban/Yukon XL and

2002-2006 Avalanche

5.3L V8, 2 & 4 WD

Catalog #5728

INSTALLATION INSTRUCTIONS

Please study these instructions carefully before installing your new Cat-back Exhaust System. If you have any questions,
contact our Technical Hotline at: 1-800-416-8628, 7am - 5pm, Monday-Friday, Pacific Standard Time or e-mail us at

[e-mail]. Please fill out and mail your warranty card.

Suggested Tools for Installation:

❑ 3/8" ratchet set with SAE and metric sockets
❑ 9/16” and 15mm wrench
❑ Jackstands and jack
❑ Liquid penetrant and rubber lubricant

DISASSEMBLY

1. Raise vehicle and support with proper jackstands for
the weight, leaving the suspension hanging.

2. Use caution around hot exhaust systems to avoid
burns.

3. Use penetrating oil on all nuts and bolts.

4. Remove the bolts and clamps from the system and
lubricate the rubber hangers.

5. Use a long pry bar to pull the rubber hangers off of the
pipe hangers.

6. Remove the old system. In some cases, you will find it
easier to cut the overaxle pipe to remove it.

ASSEMBLY

1. Bolt I-pipe to factory outlet flange (behind catalytic
converters). Note: Do not tighten flange bolts at

this time (snug only).

2. Slip the muffler onto the intermediate pipe with a
3-1/2” band clamp on the front. Note: Inlet end of
muffler is marked. Snug the clamp so you can adjust
the system later.

3. Install a 3 1/2”band clamp on the front of the overaxle
pipe and engage it into the stock rubber hangers as you
slip it into the muffler. Snug the clamps.

4. Slip tailpipe onto overaxle pipe, install 3” band clamp
and snug clamp.

5. Install hanger clamp assembly #23-4039 onto I-pipe
and engage into stock rubber hanger. Snug clamp to
pipe.

6. Working from the front of the system, align and tighten
each pipe from the cat back.

7. Check for clearance to body, frame, and driveline as
you tighten the system from front to rear.

8. Check for leaks and correct, if necessary.

WARNING!!!

Exhaust gas contains carbon monoxide, a deadly invisible gas. Correct any leaks before driving!

©2005 Edelbrock Corporation
Catalog #5728

Page 1 of 2

Brochure #63-0361

Rev. 11/05 - DA/mc

KIT CONTENTS

Catalog #5728

Qty. Part # Description

1 25-3186 I-Pipe
1 25-3190 Overaxle Pipe
1 25-3157 Tail Pipe
1 25-55726 Muffler
1 46-6612 3” Band Clamps
2 46-6613 3-1/2” Band Clamps
1 23-4039 Hanger Clamp Assembly

Overaxle Pipe Assembly

Hanger

WARNING: Support your vehicle with proper
jackstands or ramps rated for the total vehicle weight.
Place stands so that the rear axle is allowed to hang
free for easy system removal.

Edelbrock Corporation

2700 California St.

Torrance, CA 90503

Tech Line: [phone]

Tech Fax: [phone]

E-Mail: [e-mail]

I-Pipe Assembly

WARNING: These cat-back systems are engineered
to fit stock catalytic converters or equivalent
replacements. If you original system has been
modified, Edelbrock will not warranty fit or
performance.

©2005 Edelbrock Corporation
Catalog #5728

Page 2 of 2

Brochure #63-0361

Rev. 11/05 - DA/mc