Installation Instructions

8179132020-22 JEEP GLADIATOR TRUCK
3.6L ENGINEOVERVIEW:

1. Take a moment to read and understand these instructions
before installing your Flowmaster performance system.

NOTE: Please inventory all parts now before continuing andif necessary, report any missing items to our tech line. This
will avoid potentially stranding your vehicle until any missing
replacement parts arrive.

ITEMNO.

PARTNO.

DESCRIPTION

QTY.

126791S

Inlet Pipe12843047-Z

Muffler

1326792SY-Pipe

1486627S

Right Exit Pipe

1586628S

Left Exit Pipe

16ST461

Tips

2

N/A

PK1022

Hardware Package includes:

17517HA

Rear Frame Hanger

18MC250BS

21/2" Stainless Band Clamp

29MC300BS

3" Stainless Band Clamp

2PREPARE VEHICLE FOR KIT INSTALLATION:
2. Raise vehicle up on a hoist or rack to working height. If

you don’t have access to a hoist or rack, support vehicle
with jack stands.
WARNING: Avoid serious burns! Allow your vehicle
time to cool completely before touching any factory
engine components.

To ease preparation and installation of your new kit:• Apply penetrating lubricant to mounts, bolts and clamps
before you remove them.
• Use stands as necessary to support parts as you detachthem from your vehicle and again as you install new parts.

Rev 02/08/22

Page 1 of 6

3. Support then cut tailpipe at muffler exit. Unbolt rearhanger mount from frame then slide tailpipe section outand down from vehicle. Leave hanger mount on system.

4. Loosen ball clamp, disconnect inlet pipe at catalytic

converter and slide exhaust system out and down fromvehicle.

INSTALL FLOWMASTER EXHAUST SYSTEM
5. Release tab to remove ball clamp from inlet pipe andretain it for later use. Remove nuts from stock andFlowmaster clamps, apply anti-seize compound to bolts
and re-install nuts.

NOTE: The image in this step is intended for illustrative
purposes only and may or may not accurately reflectcomponents included in your kit.

6. Every slip fit connection in this kit must seat 3" deep

except for muffler connections which must seat 2" deep.
Find all slip fit components in your kit and mark themaccordingly so your Flowmaster exhaust system fitsproperly onto your vehicle.

817913Rev 02/08/22

www.flowmastermufflers.com
Technical Support (866) 464-6553

Page 2 of 6

7. Place factory ball clamp (removed step 5) onto inlet

pipe (1) then connect it to catalytic converter. Insert
wire hanger in isolator and tighten clamp enough toallow for adjustment.

1

8. Place clamp (9) onto muffler (2) then connect it to inlet

pipe. Tighten clamp just enough to allow for adjustment
then place clamp (9) onto muffler outlet.
299. Route y-pipe (3) over rear axle and connect it to muffler,
simultaneously inserting wire hanger into isolator.
Tighten clamp just enough to allow for later adjustment.

817913Rev 02/08/22

www.flowmastermufflers.com
Technical Support (866) 464-6553

3Page 3 of 6

10. Just behind passenger rear tire, unbolt wiring harness

bracket. Retain bolts (x2) for later use. Place clamp (8)onto right exit pipe (4) and connect it to y-pipe rightoutlet but do not tighten clamp.

84

11. Insert rear frame hanger (7) onto right exit pipe thenplace it on passenger frame rail, aligned to holes. Installwiring harness bracket and bolts (x2) (from step 10) andtighten exit pipe clamp to allow for later adjustment.

7

12. Place clamp (8) and rear hanger mount (removed step3) onto left exit pipe (5) then connect it to y-pipe left
outlet. Re-install rear hanger mount then tighten clamp
just enough to allow for later adjustment.
58817913
Rev 02/08/22

www.flowmastermufflers.com
Technical Support (866) 464-6553

Page 4 of 6

13. Place tips (x2) (6) onto side exit pipes and tighten inlets.
Rotate exit pipes and tips to desired distance from bodyor bumper, so angle cut on tips are properly positioned.
6614. Adjust exhaust components for fit; maintaining 1/2"

clearance and compensating for suspension, travel andvibration. Finally, tighten all clamps.
15. Recommended: Secure slip-fit connections with a 1-inchtack weld then spray high-temp paint over each weld toprevent rust and premature corrosion.

Congratulations, the installation of your FLOWMASTER
performance exhaust system is now complete!

817913Rev 02/08/22

www.flowmastermufflers.com
Technical Support (866) 464-6553

Page 5 of 6Installation Diagram

8179132020-22 JEEP GLADIATOR TRUCK
3.6L ENGINE

19293468576

Rev 02/08/22

www.flowmastermufflers.com
Technical Support (866) 464-6553

Page 6 of 6