I have decided to go with a Flowmaster Delta Flow 40 for my Screw 4X4, single inlet, single outlet using existing pipe. Can anyone that might have this tell me what part number this would be? The Flowmaster folks did not have any listings for a 2001 Screw.

 

Should be the same as for 97-99 F150. Go to www.flowmastermufflers.com and download the .pdf application guide for truck & SUV. Any muffler shop can put it on the rack and tell you what you need. Should be 2.5" pipe in and out.

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2001 F150 SCrew Lariat
5.4L 4x4
White/Silver
Flowmaster 40 Dual Chamber Muffler
Dual Exhaust Rear Exit/3-1/2" Chrome Slant Tips

On Order: Superchip & Airforce One induction

Priceline gas member ($1.41/gallon Premium)