Looking for aftermarket parts to modify or upgrade your Isuzu I-Mark 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 5555NGK 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 (PFR6G-11) 1989-1989 Isuzu I-Mark RS $70.06 |

OUT OF STOCK 7084NGK 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 GP Single Platinum Spark Plug Box of 4 (BPR6EGP) 1981-1985 Isuzu I-Mark DLX 1981-1987 Isuzu I-Mark Base 1982-1983 Isuzu I-Mark LS 1987-1989 Isuzu I-Mark S 1988-1989 Isuzu I-Mark XS 1989-1989 Isuzu I-Mark LS $37.05 |

IN STOCK 2756NGK 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-11) 1989-1989 Isuzu I-Mark RS $37.31 |
IN STOCK 3764The 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-11) 1989-1989 Isuzu I-Mark RS $55.51 |

IN STOCK - LOW 3903The 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 (BPR6EIX-11) 1981-1985 Isuzu I-Mark DLX 1981-1987 Isuzu I-Mark Base 1982-1983 Isuzu I-Mark LS 1987-1989 Isuzu I-Mark S 1988-1989 Isuzu I-Mark XS 1989-1989 Isuzu I-Mark LS $55.51 |

IN STOCK 6741NGK 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/Platinum Spark Plug Box of 4 (IFR6E-11) 1989-1989 Isuzu I-Mark RS $70.82 |

IN STOCK - LOW 7092NGK 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 (BKR6EGP) 1989-1989 Isuzu I-Mark RS $41.29 |

OUT OF STOCK 7133NGK standard plugs are constructed for longer life and optimum performance.... NGK Standard Spark Plug Box of 4 (BPR6ES-11) 1981-1985 Isuzu I-Mark DLX 1981-1987 Isuzu I-Mark Base 1982-1983 Isuzu I-Mark LS 1987-1989 Isuzu I-Mark S 1988-1989 Isuzu I-Mark XS 1989-1989 Isuzu I-Mark LS $36.17 |

IN STOCK 5553NGK standard plugs are constructed for longer life and optimum performance.... NGK Traditional Spark Plug Box of 4 (BKR6ES-11) 1989-1989 Isuzu I-Mark RS $35.52 |

OUT OF STOCK 6261NGK 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 (BPR6EY-11) 1981-1985 Isuzu I-Mark DLX 1981-1987 Isuzu I-Mark Base 1982-1983 Isuzu I-Mark LS 1987-1989 Isuzu I-Mark S 1988-1989 Isuzu I-Mark XS 1989-1989 Isuzu I-Mark LS $35.20 |