PerTronix Dougs Headers D3353-3 User Manual
Disassembly
Page 1 of 3
Part # 0110-003015
Rev 2 3-5-13
DSL
HEADER INSTALLATION INSTRUCTIONS
D3353, D3353-1, D3353-2 & D3353-3
APPLICATION
1999
–2001 GM PICK-UP 2 Wheel Drive 4.8L, 5.3L, 6.0L V8
PerTronix
©
thanks you for choosing
DOUG’S HEADERS, the best fitting, highest quality header on the market. In order
to realize the full potential of our good fit, please read and understand these instructions completely prior to starting work.
CHECK TO MAKE SURE YOU RECEIVED THE PROPER PARTS FOR YOUR APPLICATION. THE HEADER NUMBER WILL
BE STAMPED ON THE ENGINE FLANGE. IF YOU ARE UNSURE YOU HAVE RECEIVED THE PROPER PARTS CALL
BEFORE YOU START WORK.
BE SURE TO WORK SAFE! WHENEVER YOU WORK UNDER THE VEHICLE BE SURE THAT IT IS LOCATED ON LEVEL,
SOLID GROUND AND IS SUPPORTED BY ADEQUATE SAFETY STANDS!
REMEMBER: HOT ASPHALT WILL NOT SUPPORT MOST JACK STANDS!
Many factors affect the installation of headers, some of which are broken or aftermarket motor mounts, accidents that impact the
configuration of the frame, and/or the installation of different engines or aftermarket cylinder heads. Most installations require
some welding. If you are uncomfortable with welding operations, we recommend that you contact a professional exhaust
system specialist to install your new headers.
Attention Customers breaking in new engines: Due to the extreme heat generated during the break-in process, the
appearance of the ceramic coating may be altered in certain areas. The protection characteristics and thermal barrier properties
of the coating is never compromised. It is recommended that a cast iron manifold or old set of headers be used for this process.
Notice: The coating of these headers can be marred or scratched during installation. If the header needs to be returned and is
damaged, you will be charged for recoat.
DISASSEMBLY
1.
Disconnect the negative battery cable from the battery.
2.
If a car lift is not available, raise the vehicle 2 feet or higher and support it with
adequate safety stands. Make sure the vehicle is on a flat solid surface and is stable.
If you use the leveling jacks to raise the vehicle place safety stands under the vehicle
also.
3.
Apply penetrating oil to all nuts and bolts to be removed.
4.
Unplug O
2
sensor wire and remove O
2
sensor from head pipe. Use care to not damage
the wire or the sensor. Do not lose the gasket.
5.
Cut the head pipe about just ahead of the weld on the inlet side of the catalytic
converter. Unbolt and remove the head pipe.
6.
Remove the air cleaner assembly and ducting.
Corporate Office: PerTronix Inc. 440 E. Arrow Highway, San Dimas, California 91773 * Phone 909.599.5955 * FAX 909.599.6424 * www.dougsheaders.com