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Catalog #66252, #66253
©2006 Edelbrock Corporation

Page 1 of 3

Brochure #63-66252

Rev. 8/06 - DA/mc

TUBULAR EXHAUST SYSTEM

Applications: See Below

Catalog #66252, #66253

INSTALLATION INSTRUCTIONS

Please study these instructions carefully before installing your new 

Tubular Exhaust System (TES). If you have any

questions, please contact our 

Technical Hotline at : 1-800-416-8628

from 7 am - 5pm, Monday-Friday, Pacific

Standard Time or e-mail us at 

[email protected]

.

APPLICATIONS:

For 1998-1999 GM Tahoe,Yukon, Escalade 1500 Series, Suburban, and Pick-up, 5.7L-V8 Auto &

Standard Transmission, 2 & 4 WD with A.I.R. Dual catalytic.

TUBULAR EXHAUST SYSTEM:

These components are designed to improve the exhaust efficiency of the GM C.P.I. (Central

Port Injection) V8 engine. A performance gain can be expected by the installation of the system.

This system does

require welding for installation

and retains all O.E.M. emissions equipment.

Suggested Tools Needed for Installation:

This vehicle has metric fasteners.

Mig welder (recommended) or gas welder—Professional welding is highly recommended

❑ 

3/8” ratchet socket set with extensions and universal 13mm and 15mm swivel sockets

Combination set of open-end wrenches

❑ 

Jackstands, screwdrivers, pliers, crescent wrench, etc.

Hacksaw or Sawz-all

Liquid penetrant, (GM #1052627) anti-seize compound (GM #5613695)

NOTE:

Some models will require a special power steering pulley puller, K-D 2897 or equivalent

SPECIAL NOTICE:

This Edelbrock Tubular Exhaust System 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

Tubular Exhaust Systems. Those products can cause excessive heat and moisture buildup resulting in corrosion and
failure of the system.

NOTE:

High temperature spark plug wires and boots are recommended to withstand heat from T.E.S.

IMPORTANT NOTE:

Proper installation is the responsibility of the installer.  Improper installation will void warranty and may

result in poor performance and engine or vehicle damage.

KIT CONTENTS

Catalog #66252 (Ceramic-Coated), #66253 (Ti-Tech Coated)

Qty.

Description

1

Header left side #25-9458 (#66252)

1

Header right side #25-9457 (#66252)

1

Header left side #25-9136 (#66253)

1

Header right side #25-9137 (#66253)

1

Extension pipe left #25-9653

1

Extension pipe right #25-9654

1

4x4 Extension pipe (left) #25-9655

Qty.

Description

12

Hex header bolts; 3/8” - 16 x 1”

2

Chevrolet V8 port gaskets

2

Donut gaskets; 2-1/4”

4

Hex capscrews; 3/8” x 2”

16

Lock washers; 3/8”

4

Flat washers; 3/8”

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