NGK 7781 ZFR5LP-13G Iridium Platinum Spark Plug Chrysler Specific Dual Platinum Ignition

Adapted for 2000–2010 Chrysler 300C (including 3.5L V6 and 5.7L V8) and equivalent platforms such as Dodge Charger, Jeep Grand Cherokee; designed to optimize ignition efficiency at high-mileage engines. NGK 7781 ZFR5LP-13G Iridium-platinum spark plugs with center Iridium electrode and dual platinum side electrodes to significantly improve ignition stability and extend life beyond 80,000 km, while reducing carbon buildup risk. OEM numbers ZFR5LP-13G, SZFR5LP13G and 7781 for cross-checking. Replacement difficulty: medium; torque 25–30 N·m; avoid over-tightening to protect head threads. For B2B buyers, this spark plug has a resistance of 6 kΩ to damp electromagnetic interference; ensure differentiation for pre- and post-2005 models due to thread length differences.