Looking for aftermarket parts to modify or upgrade your 2003 Mitsubishi Eclipse with spark plugs? At Tunersports.com we carry a huge selection of the top name brand performance spark plug parts and accessories.

OUT OF STOCK 2647NGK Laser Platinum Series plugs provide high ignitability and longer service life. Laser welded dual platinum surfaces ensure slow wear rate providing stable idel, superior anti fouling, improved fuel efficiency and lower emissions.... NGK Double Platinum Spark Plug Box of 4 (PFR5G-11)) 2001-2003 Mitsubishi Eclipse GT / Spyder GT $68.27 |

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 $54.25 |

OUT OF STOCK 6507NGK Laser Iridium plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high-performance engines.... NGK Laser Iridium Spark Plug Box of 4 (IFR6B) 2003-2003 Mitsubishi Eclipse GTS / Spyder GTS $70.66 |

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 $66.88 |
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 $66.88 |

IN STOCK - LOW 6364NGK standard plugs are constructed for longer life and optimum performance.... NGK Standard Spark Plug Box of 4 (BKR6ES) 2003-2003 Mitsubishi Eclipse GTS / Spyder GTS $35.09 |

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 $36.15 |