Iridium LongLife Spark Plug 3450 quality iridium spark plug designed as a direct replacement for applications specified by part number 3450. Engineered to deliver long service life, consistent ignition, and stable engine performance for gasoline engines that require this specification. Key benefits Durable iridium tip for extended service life and consistent spark over time. Stable ignition reduces misfires and helps maintain smooth idle and steady acceleration. Reliable performance for routine maintenance and scheduled spark plug replacement intervals. Directfit design that meets the installation specifications associated with part number 3450, enabling straightforward replacement without modification. What this product does and why you need it This spark plug produces the electrical spark required to ignite the air fuel mixture in gasoline engine cylinders. The iridium electrode provides a harder, longerlasting contact surface than standard materials, helping maintain efficient combustion and consistent engine starting and running behavior. Replacing worn or fouled plugs with a longlife iridium unit can restore engine smoothness and reduce the chance of misfires between service intervals. Important attributes Material: Iridium tipped electrode for enhanced durability. Function: Ignition component that sparks the air fuel mixture in internal combustion engines. Compatibility: Intended as a replacement for applications calling for part number 3450 and for gasoline engines that specify equivalent spark plug requirements. Performance: Designed to offer longlasting spark stability and dependable ignition throughout its service life. Installation: Direct replacement when the vehicle or equipment specifies part number 3450; follow vehicle manufacturer torque and gap recommendations. Typical use scenarios Routine maintenance: worn spark plugs during scheduled service to restore smooth idle and reliable starting. Long trip preparation: Install longlife plugs before a road trip to reduce the likelihood of ignitionrelated issues during extended driving. mileage engine care: Upgrade to an iridium longlife plug as part of a maintenance plan to extend service intervals and sustain consistent engine performance. Note: Always verify compatibility with your vehicle or equipment by matching the required part number and installation specifications before .