Failure mode - Ford 6.2L Boss Gasoline (Super Duty 2011-2019, SVT Raptor 2010-2014; continued 2020-2022)

Ignition service wear (16 plugs / coils)

Reliability tier: aggregated - verify before ordering, see /disclosure/

Symptoms

rough idle / misfire as plugs age - doubled service surface (16 plugs per engine)
plug access and condition vary by bank; coils fail individually

Compare with the other causes of the same sign on this engine: misfire, rough idle, hesitation or surging (2 causes)

Root cause

Dual-plug SOHC heads double the plug count (16) and make ignition service the signature maintenance item of this engine; coils wear conventionally. Service consumption, not a defect pattern.

Diagnosis

service both plugs per cylinder as sets on an aged engine
test coils on a miss before replacing hardware in bulk

Fixes

service: plugs (x16) + coils as wear parts ()

ignition - more than one option: 6.2L Boss Ignition Coil (OEM), 6.2L Boss Ignition Coil, 2019+ (OEM, per side), 6.2L Boss Spark Plug, lead (OEM), 6.2L Boss Spark Plug, secondary (OEM)

Prevalence

common

Parts for this repair run about $55-$120: see them next to the other repairs on this engine in repair costs.