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Volvo S80 1999-2006 » Spark Plugs
 Bosch Super Copper Core Plugs
Heavy-duty copper core center electrode delivers superior durability and reliability. Nickel chromium ground electrode means consistent performance and prolonged service life. Nickel-plated rolled threads mean complete anti-seize and corrosion protection. Metal glass-fused center electrode seal prevents combustion leakage. Angular, five-ribbed insulator design prevents misfire due to current leakage.
Bosch Platinum Plugs
Only Bosch uses a pure platinum center electrode, heat-fused into an extended insulator which reaches self-cleaning temperature only seconds after starting. Electrode gap remains virtually unchanged throughout the plug's longer service life; no need to clean or re-gap. Heavy-duty tapered ground electrode means extended service life, reduced electrode temperature, and improved access to air/fuel mixture. Lower ignition voltage requirement vs. other plug designs deliver reliable cold weather starts and superior operation under all driving conditions.
Denso Iridium Plugs
Denso Iridium plugs are serious power and performance for even the most serious of performance minded customers. Pure Iridium has a melting point of almost 700șC higher than platinum and better withstands overheating, detonation, and oxidation wear. Denso Iridium plugs are combined with Rhodium for superior heat resistance and response. With high power and high heat turbo engines, you need all the help you can battling heat and detonation. Bring in a ringer with Denso Iridium plugs.We highly recommend iridium when running an ECU upgade as the high boost levels are hard on plugs which can lead to high load misfiring. Iridium plugs have shown real improvements in this area. Please check fitment listed below to ensure products will fit your specific vehicle.
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FR7DPX Reviewed by John from CA
Got five plugs for the 60,000 mile tune up. They came gapped but after I installed them the car stalled at low RPM and ran very rough. Called customer service and was told that I should NOT re-gap them. I found the right gap on the Internet and regap them accordingly. Car has been running fine since. Good product, bad customer service!
ipd customer service response: From my experience as a technician, I recommend you never trust a pre-gapped spark plug. You should always check them. -Kevin
November 2008
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