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

IN STOCK 5019NGK G-Power Series offers the performance and durability of platinum at a competitive price. Fine wire platinum tipped center electrode reduces required voltage for better starts, superior acceleration and increased fuel economy.... NGK G-Power Platinum Spark Plug Box of 4 (LTR5GP) 2000-2004 Ford Focus SE / ZTS / ZX3 2002-2004 Ford Focus SVT / ZTW / ZX5 $48.43 |
OUT OF STOCK 7159NGK G-Power Series offers the performance and durability of platinum at a competitive price. Fine wire platinum tipped center electrode reduces required voltage for better starts, superior acceleration and increased fuel economy.... NGK G-Power Spark Plug Box of 4 (TR55-1GP) 2000-2003 Ford Focus SE 2000-2004 Ford Focus LX $40.63 |

OUT OF STOCK 3692The 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 IX Spark Plug Box of 4 (TR65IX) 2003-2004 Ford Focus LX / SE / ZTS / ZTW 2003-2006 Ford Focus ZX3 / ZX5 $54.25 |
OUT OF STOCK 7316The 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 IX Spark Plug Box of 4 (TR55-1IX) 2000-2003 Ford Focus SE 2000-2004 Ford Focus LX $54.25 |

OUT OF STOCK 4477NGK 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 Iridium Long Life Spark Plug Box of 4 (IR6F-13) 2003-2004 Ford Focus LX / SE / ZTS / ZTW 2003-2006 Ford Focus ZX3 / ZX5 $69.16 |

OUT OF STOCK 2467NGK 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 Laser Platinum Spark Plug Box of 4 (PTR5A-13) 2000-2004 Ford Focus SE / ZTS / ZX3 2002-2004 Ford Focus SVT / ZTW / ZX5 $59.25 |
OUT OF STOCK 5598NGK 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 Laser Platinum Spark Plug Box of 4 (PTR6D-13) 2003-2004 Ford Focus LX / SE / ZTS / ZTW 2003-2005 Ford Focus ZX3 / ZX5 $64.69 |

IN STOCK - LOW 92714NGK 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 (TR6AHX) 2003-2004 Ford Focus LX / SE / ZTS / ZTW 2003-2006 Ford Focus ZX3 / ZX5 $66.88 |

OUT OF STOCK 4344The 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 Single Iridium Spark Plug Box of 4 (LTR5IX-11) 2000-2004 Ford Focus SE / ZTS / ZX3 2002-2004 Ford Focus SVT / ZTW / ZX5 $54.25 |
OUT OF STOCK 5141NGK 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 Single Platinum Spark Plug Box of 4 (TR6GP) 2003-2004 Ford Focus LX / SE / ZTS / ZTW 2003-2006 Ford Focus ZX3 / ZX5 $40.63 |

OUT OF STOCK 2683NGK 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 (TR55-1) 2000-2003 Ford Focus SE 2000-2004 Ford Focus LX $35.99 |
IN STOCK 4177NGK 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 (TR6) 2003-2004 Ford Focus LX / SE / ZTS / ZTW 2003-2006 Ford Focus ZX3 / ZX5 $35.12 |