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5-2003 Powerstroke 7
7L 5" Downpipe Back Exhaust w/ Muffler (521034)
Best practice: Machine both the head and block for perfect flatness
Run cooler and stronger with this easy upgrade to your Super Duty
or do I buy that separately
1994-2002 Cummins 5.9L 2 Low UnLoc (1030703) 2011 - 2019 Ford Engine Components 5-2003 Powerstroke 7Vehicle maneuverability is reduced while in 4WD. When the 2Low Unloc is turned on, you disable the front wheel drive mechanism allowing for full torque to be available to the rear wheels only. The front wheels will NOT be driven, delivering normal 2WD maneuverability while in low range! This will also allow for sharp "All The Way Over" turns without the front axle u joint hopping or binding.