Stainless Works Ford F-150 Ecoboost 2011-14 3.5L Off-Road Downpipe - Manual (Page 2)

WWW.STAINLESSWORKS.NET 800-878-3635 FAX: 440-543-9183
12. Remove (2) 12 mm nuts from transmission mount.
13. Remove (4) 12 mm bolts and nuts from cross member and remove cross member.
14. Remove 10 mm nut and 8 mm nut from front drive shaft shield.
15. Remove all (12) 10 mm bolts from front drive shaft and remove drive shaft.
16. Remove (4) 12 mm bolts from transmission mount and the 10 mm bolt from
hanger.
17. Unplug O2 sensors.
18. Remove (2) 10 mm nuts from left and (2) 10 mm from right head pipes and
remove, then slide transmission mount off.
19. Re-install transmission mount and cross member and tighten bolts.
20. Install left and right down pipes and left hanger.
21. Install Y-pipe with (2) 3” clamps.
22. Reconnect downpipe to OEM catback at 2-bolt flange using the factory bolts.
(When connecting to a Stainless Works catback, you will be supplied with a donut
gasket and bolts/ nuts.)
23. Reinstall O2 sensors and supplied O2 extension P/N 109214R on left rear O2.
24. Reinstall drive shaft and shield.
25. Reinstall (2) 6 mm bolts in left and right heat shields to cross member.
26. Adjust exhaust for fitment and tighten clamps.
27. Be sure to have adequate clearance around all wires, hoses and lines. If anything
is in contact with the exhaust system, it will melt. Make sure to have at least
½” of clearance and wrap any suspect areas with DEI thermal barrier wrap.
28. After double checking for clearance and making sure all lines, wires and hoses are
secured, drive the car for 10-20 miles and re-check all clamps and clearances.
Your system may be tack welded at the joints/ clamps to reduce shifting of the
system during heating and cooling cycles. Make certain to disconnect the battery
before performing any welding.