Re: Balance shafts on 4.0 SOHC
My 2003 4.0 FX4 definitely had a balance shaft. I believe that all 4.0 SOHC 4x4's had it for the 2001~2005 model years. For 2006 and later, Ford eliminated the 4x4 balance shaft.
If yours does not have the balance shaft, it's likely that your engine was replaced at some point.
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2003 FX4 Level II, Supercharged 5.0L V8, Headers, Duals
BW4406 manual transfer case, Aussie Locker, Torsen L/S, 4.10's
Bilstein 7100 rezzies, Cadillac/Mustang rear discs, Duff traction bars
Keypad Entry, Lock LEDs, ABS switch, sway bar discos
Heated seats, Explorer EATC, Trip Computer and consoles
2003 XLT 2.3L M5OD-R1 reg cab, 2011 Taurus SEL, 2016 C-MAX Energi Plug-in Hybrid
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