Original equipment spark plug is rated 50 out of 5 by 2 rated 5 out harley davidson motor company as the agent for the selling dealer sign in below or continue as a guest if you just created a new accountyoull receive a confirmation email shortly sign in. Spark plug size 12 mm spark plug type harley davidson 6r12 spark plug gap 0038 0043 in 097 109 mm spark plug torque 12 18 ft lbs 16 24 nm oiling system pump twin gerotor dual scavenge crank mounted and driven internal oil pump dry sump. What csoday says i agree you need to develop a feel for the spark plugs i think using a torque wrench on them is asking for it if the heads were cast iron i might feel differently but ive seen cases of over tightening on plugs leading to thread failure in aluminum heads. This video cover the reading and replacement of the spark plugs on a 1996 harley davidson softail fatboy but these same steps can be used to replace the plugs on any of the harley models or any
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