Edelbrock 65012 Installation Instructions

Please study these instructions carefully before installing your new Header. If you have any questions or problems, please contact
our Technical Hotline at : 1-800-416-8628 from 7 am - 5pm, Monday-Friday, Pacific Standard Time or e-mail us at
edelbrock@edelbrock.com. Please fill out and mail your warranty card.
HEADERS: These components are designed to improve the exhaust efficiency of the GM C.P.I. (Central Port Injection) V8 engine. This
system does not require welding for installation and retains all O.E.M. emissions equipment. These Edelbrock headers are
street legal in all 50 states.
Suggested Tools Needed for Installation. This vehicle has metric fasteners:
K 3/8" ratchet socket set with extensions and universal 13mm and 15mm swivel sockets
K Set of combination wrenches
K Jackstands, screwdrivers, pliers, crescent wrench, etc.
K Liquid penetrant, (GM #1052627) anti-seize compound (GM #5613695)
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.
NOTE: High temperature spark plug wires and boots are recommended to withstand heat from Headers.
DISASSEMBLY
1. Disconnect negative battery cable.
2. Unbolt exhaust pipes from manifolds.
Right Side
1. Disconnect and remove spark plug wires.
2. Disconnect E.G.R. flange.
3. Disconnect A.I.R. flange.
4. Unbolt dip stick tube.
5. Unbolt and remove manifold.
6. Install flange gasket and header from top. Install
header bolts, lock washers, and thick flat washers
supplied, ensure proper alignment and tighten bolts.
Note: Thick washers are to be used on slotted holes
of port flange.
7. Install E.G.R. flange using supplied gasket.
8. Install A.I.R. flange using supplied gasket (use factory
hardware).
Left Side
1. Disconnect and remove spark plug wires.
2. Disconnect A.I.R. flange.
©2005 Edelbrock Corporation
Catalog #65012 & #65013
For 1999-2005 GM, 1500/2500 Series Pick Up,
Suburban, Tahoe, Yukon 4.8L/5.3L/6.0L V8 Auto,
2 & 4 WD, Dual Catalytic with A.I.R. and EGR
Catalog #65012 (Ceramic) & #65013 (Ti-Tech)

INSTALLATION INSTRUCTIONS

3. Unbolt and remove manifold.
4. Install flange gasket and header from top. Install
5. Re-install spark plug wires.
6. Install A.I.R. flange using supplied gasket (use factory
ASSEMBLY OF EXHAUST PIPE
Note: The stock donut on 4.8L & 5.3L gasket on right exhaust
manifold will be re-used with headers.
This system comes with 2 exhaust crush rings. On 4.8L & 5.3L
V8s, only one will be used on the left side collector. 6.0L
vehicles will use one on the left side and one on the right side
to replace factory-installed crush rings.
Page 1 of 2
Edelbrock Header
INSTALLATION INSTRUCTIONS
header bolts, lock washers, and thick flat washers
supplied, ensure proper alignment and tighten bolts.
Note: Thick washers are to be used on slotted holes
of port flange.
hardware).
Note: Due to production tolerances, it may be
necessary to bend the motor mount heat shield for
better clearance.
Rev. 1/05
DA/mc