Looking for in-stock aftermarket parts to modify or upgrade your 2004 Mitsubishi Eclipse with spark plugs? At Tunersports.com we carry a huge selection of the top name brand performance spark plug parts and accessories.

IN STOCK 6341The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® the ideal choice for any performance enthusiast. Iridium's high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.... NGK Iridium Stock Heat Spark Plugs Box of 4 (BKR5EIX) 2004-2005 Mitsubishi Eclipse GT / Spyder GT $55.51 |
IN STOCK 6418The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® the ideal choice for any performance enthusiast. Iridium's high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.... NGK Iridium Spark Plug Box of 4 (BKR6EIX) 2003-2005 Mitsubishi Eclipse GTS / Spyder GTS $55.51 |

IN STOCK 95159NGK Ruthenium HX is designed for newer engines which demand high ignitability. Double Fine Electrode (DFE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions.... NGK Ruthenium HX Spark Plug Box of 4 (FR6BHX-S) 2003-2005 Mitsubishi Eclipse GTS / Spyder GTS $68.68 |
IN STOCK 96457NGK Ruthenium HX is designed for newer engines which demand high ignitability. Double Fine Electrode (DFE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions.... NGK Ruthenium HX Spark Plug Box of 4 (FR5BHX) 2000-2004 Mitsubishi Eclipse RS 2000-2005 Mitsubishi Eclipse GS 2001-2005 Mitsubishi Eclipse Spyder GS $68.68 |

IN STOCK 6962NGK V-Power plugs feature a unique v-cut in the center electrode that directs the spark to the edge of the electrode, helping the spark develop more rapidly, increasing ignitability and reducing quenching.... NGK V-Power Spark Plug Box of 4 (BKR6E) 2003-2005 Mitsubishi Eclipse GTS / Spyder GTS $36.60 |