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Time to replace your spark plugs? This listing is for a set of 3 NGK replacement spark plugs for the 450 Turbo Model smart car (pre 07). Please note! The 450 model was manufactured prior to 2007. These plugs will not fit the new 451 model smart car.

Not sure which is the right plug for your smart? Give us a call at 562-981-6800 and we will be glad to assist you.

Here is some information on these plugs:

Multi-Ground Plug
14mm Thread Size
19mm (3/4") Reach
5/8" (16mm) Hex Size

Multi-Ground electrodes improve ignition capabilities and are less sensitive to increased voltage requirements due to gap growth. Designed to specific manufacturer ignition requirements in either supplementary gap, intermittent discharge, or semi-surface discharge, all for various firing tip self cleaning abilities. Multi-Ground plugs maintain all features of NGK's traditional plugs including corrugated ribs, pure alumina silicate ceramic insulator for greater strength and better heat transfer, copper core and triple interior seal. NGK