FLOWMASTER 718116 Flow FX Cat Back Exhaust System Installation Guide

Installaon Instrucons
718116
2021 22 FORD F150
2.7T, 3.5T & 5.0L ENGINE

OVERVIEW:

1. Take a moment to read and understand these instrucons before installing your Flowmaster performance system.
   NOTE: Please inventory all parts now before con nuing and if necessary, report any missing items to our tech line. This will avoid poten ally stranding your vehicle unl any missing replacement parts arrive.

REMOVE STOCK EXHAUST SYSTEM:

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 me to cool completely before touching any factory engine components. To ease prepara on and installaon of your new kit:
   • Apply penetra ng lubricant to mounts, bolts and clamps before you remove them.
   • Use stands as necessary to support parts as you detach them from your vehicle and again as you install new parts.

3. Cut tailpipe at muffler exit. Disassemble hanger wires from is olators and remove tailpipe secon from vehicle.

4. Support muffler and disassemble wire hangers from isolators. Remove and retain (x2 ea.) flangenuts and bolts, disconnect inlet pipe and remove exhaust system. INSTALL FLOWMASTER EXHAUST SYSTEM:

5. Remove nuts from stock and Flowmaster clamps, applyan  seize compound to bolts and reinstall nuts. NOTE: The image in this step is intended for illustrave purposes only and may or may not accuratelyrefl ect components included in your kit.

6. Every slipfit connecon in this kit must seat 3″ deep except for muffler connecons which must seat 2″ deep.
   Find all slipfit components in your kit and mark them accordingly so your Flowmaster exhaust system fits properly onto your vehicle.

7. If your vehicle falls within the specificaons listed below, apply the corresponding modifica ons or assembly combina ons to this kit to ensure it will install properly.
   WHEEL BASE| BODY STYLE| BED LENGTH| INLET ASSY:| MODIFICATION
   ---|---|---|---|---
   141″| Regular Cab| 8′| Inlet Pipe only| Trim 4″ from inlet pipe
   145″| SuperCrew| 5’5| Inlet Pipe only| None
   145″| SuperCab| 6’5| Inlet Pipe only| None
   157″| SuperCrew| 6’5| Inlet+Extension| Trim 6″ from extension pipe
   163″| SuperCab| 8′| Inlet+Extension| None

8. Place flange (9) on inlet pipe (1) then connect assembly to head pipe. Fasten flanges with (x2 ea.) nuts and bolts (removed step 4) just enough to hold parts. Orient inlepipe straight with its bend facing down for proper fit.

9. If applicable, place clamp (7) onto extension (2) then connect it to inlet pipe. Tighten clamp just enough to allow for adjustment . NOTE: Complete this step if you have a V8 model vehicle, otherwise, move on to next step.

10. Remove factory frame hanger, retain bolts and transferunuts over to forward posi on. Install side frame hanger (5) to vehicle with (x2) bolts (12). Hang rubber hanger (10) on side frame hanger end.

11. Place clamp (7) onto muffler (3) then connect it to inlet/extension pipe. Tighten clamp just enough to allow for adjustment then place (x2) clamps (8) onto muffler outlets.

12. Connect exit pipe assembly (4) to muffl er. Adjust systemun lps are posi oned properly then hold them in place with a stand. Tighten clamps just enough to hold parts in place.

13. Verify system is properly posioned, then insert bracket (11) onto exit pipe assembly. Set bracket against vehicle frame and mark holes. Remove bracket, drill holes then fasten bracket in place with bolts (removed step 10).

14. Adjust exhaust components for fit maintaining 1⁄2 ” clearance and compensa ng for suspension, travel and vibra on, then ghten all clamps.

15. Recommended: Secure slipfit connec ons with a 1-inch tack weld then spray high temp paint over each weld to prevent rust and premature corrosion.

Congratulaons, the installa on of your FLOWMASTER performance exhaust system is now complete!

www.flowmastermufflers.com
Technical Support866-464-6553
Rev 04/05/22

Documents / Resources

| FLOWMASTER 718116 Flow FX Cat Back Exhaust System [pdf] Installation Guide
PK1065, 526HA, 527HA, 718116 Flow FX Cat Back Exhaust System, Flow FX Cat Back Exhaust System, Cat Back Exhaust System, Back Exhaust System, Exhaust System, System
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