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                Manufacturer: HKS

                HKS 50003-M40G - Super Fire Racing Iridium Spark Plug

                $23.92
                $23.97
                Super Fire Racing Spark Plug, G Type
                SKU: HKS-50003-M40G
                Availability: Out of Stock - on backorder and will be dispatched once in stock.
                Fitment:
                Please Select Vehicle To Confirm Fitmenteditedit...
                Fitment Notes:

                ALL PLUGS SOLD INDIVIDUALLY

                HKS S-Series Super Fire Racing Spark Plugs

                HKS S-Series Super Fire Racing Spark Plugs are high performance Iridium plugs designed to handle advanced levels of tuning and still offer easy start-up and smooth idling.

                M-Series Super Fire Spark Plugs

                HKS M-Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti-carbon build-up.

                *M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load.

                The Iridium alloy is used because of its durability and reliability. On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity. With a high melting point of 2454 degrees C, opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration. The Iridium plugs are available for multiple applications and offered in “colder” heat ranges of 7 and up and specifically for rotary, heat ranges of 9 and up are offered.

                ALL PLUGS SOLD INDIVIDUALLY

                HKS S-Series Super Fire Racing Spark Plugs

                HKS S-Series Super Fire Racing Spark Plugs are high performance Iridium plugs designed to handle advanced levels of tuning and still offer easy start-up and smooth idling.

                M-Series Super Fire Spark Plugs

                HKS M-Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti-carbon build-up.

                *M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load.

                The Iridium alloy is used because of its durability and reliability. On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity. With a high melting point of 2454 degrees C, opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration. The Iridium plugs are available for multiple applications and offered in “colder” heat ranges of 7 and up and specifically for rotary, heat ranges of 9 and up are offered.

                Products specifications
                Heat Range NGK # 8
                Fitment Vehicle Specific
                Thread Size 14mm × 19mm
                Wrench Size 20.8mm