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INSTALLATION INSTRUCTIONS FOR 
DYNOMAX DUAL KIT: 19389

2004 Dodge Durango w/4.7L, 5.7L V8 Engines,

2WD/4WD

2701 N. Dettman Rd.

Jackson,  MI  49201

NOTE: Read all instructions before starting any work.

1. Remove the OE front muffler assembly and the OE rear resonator assembly.

To assist in removal, it is recommended that the rubber hanger isolators be 
lubricated with WD-40 or a similar product.

2. Install DynoMax front pipe 

41801

to the outlet of the converter/y-pipe assembly.

The rod hanger should slip into the the rubber isolator located off the passenger 
side frame rail. Finger tighten the supplied 2

³⁄₄

" U-Bolt clamp onto the inlet of 

this pipe.

3. Install DynoMax muffler 

17665

onto the outlet end of pipe 41801. The outlet 

end of the muffler is marked with the word ‘OUTLET’. The muffler body should 
lie flat when properly installed with the muffler inlet connection closes to the 
drive shaft. Finger tighten a 3" U-Bolt clamp onto the muffler inlet connection.
(If equipped, attach the OE electrical grounding strap nut to one of the muffler 
clamp u-bolt ends when performing the final tightening sequence. See step 6.)

4. Install rear extension pipe 

52225

into the outlet of the muffler. Position the two 

rod hangers into the proper rubber isolators above the rear of the muffler. The 
two rod hangers should point toward the rear of the vehicle when properly 
installed. Finger tighten a 3" U-Bolt clamp onto the muffler outlet connection 
to this pipe.

5. Install tail pipe 

55211 

onto the outlet of pipe 52225. Slide the tail pipe rod 

hanger into the two rubber isolators at the rear of vehicle.

6. Beginning from the inlet end, position all components and tighten clamps.

Please see full system diagram on the back page.

Form: 700037

04/04

KIT CONTAINS:

(1) 17665 MUFFLER
(1) 41801 PIPE 
(1) 52225 PIPE 
(1) 55211 PIPE 
(1) 2

³⁄₄

" CLAMP

(3) 3" CLAMPS 
(1) INSTRUCTION SHEET

DANGER WARNING:

SHOULD THE PURCHASER DECIDE TO INSTALL

ANY EXHAUST PRODUCT AT HOME, BE WARNED THAT PASSENGER
CAR OR LIGHT DUTY TRUCK/VAN “BUMPER” JACKS ARE INTENDED
FOR EMERGENCY USE ONLY. THE USE OF FRAME CONTACT JACK
STANDS IN CONJUNCTION WITH A FLOOR JACK AS MAIN SUPPORT
IS HIGHLY RECOMMENDED TO MINIMIZE ACCIDENTAL DROPPING
OF A VEHICLE DURING THE INSTALLATION PROCESS.

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