Spark plug replacement runs $100-$350 on 4-cylinder cars; $200-$500 on V6/V8; $400-$800 on engines with hard-to-reach plugs (V8 trucks with intake removal).
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DIY saves $50-$200 on most 4-cyl/V6 engines; check torque spec and use anti-seize sparingly.
Typical total runs $83–$517 in Kansas, with parts around $30–$200 and labor $53–$317 at the KS average labor rate of $106/hr.
New plugs (matched to OEM heat range); Coil-boot inspection; Anti-seize on threads where specified; Torque to spec.
Plug type (copper / platinum / iridium) Engine layout Whether coils need replacement Always get more than one written quote.
DIY saves $50-$200 on most 4-cyl/V6 engines; check torque spec and use anti-seize sparingly.
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