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Japan : 11/09 09:36   EN
Europe, UK: Sunday, Nov 15 ~
USA: Thursday, Nov 12 ~
Australia: Saturday, Nov 14 ~
Asia: Friday, Nov 13 ~
UAE: Saturday, Nov 14 ~

Order within 2 Hours 23 mins with Scheduled Delivery. If you place an order within this time, We will ship Thursday, Nov 12 2026. This delivery time is calculated by DHL and FedEx. You can check the exact delivery date on checkout page.

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     Description (2,756 characters)
[Screw part φ14×19mm/Wrench 20.8mm Heat range equivalent to NGK No. 8/L
・For long type such as FJ model]
・This is a set of 4 HKS Super Fire Plug Type-M, 50003M40G.
・This is the strongest plug, enhanced by the selection of materials and new design of shape to improve ignition performance, durability and fouling resistance, bring out the performance of tuned engines and also be effective for normal engines.
・By adopting a 0.6mm iridium alloy center electrode, the required voltage is reduced, and combined with the platinum square tip ground electrode, it improves ignition performance and has excellent durability, and the tip is shortened and tapered to secure the volume of space.
・By providing a thermo edge + auxiliary spark gap at the tip of the insulator, a minute discharge is generated to burn off accumulated carbon and prevent misfires that occur in various combustion environments.
・Furthermore, because rotary engines meet different performance requirements than reciprocating engines, a specially designed RE type with a storage-shaped platinum ground electrode is used to ensure reliable ignition.
・For manufacturer compatibility, please see HKS SUPER FIRE RACING M series LINE UP Plug Type Screw Size Wrench Size Heat Range Part Number 4-piece set JIS Type φ14×19mm 16mm NGK No. 7 equivalent 50003-M35 50003-M35-4 NGK No. 8 equivalent 50003-M40 50003-M40-4 NGK No. 9 equivalent 50003-M45 50003-M45-4 ISO Type φ14×19mm 16mm NGK No. 7 equivalent 50003-M35i 50003-M35i-4 NGK No. 8 equivalent 50003-M40i 50003-M40i-4 NGK No. 9 equivalent 50003-M45i 50003- M45i-4G type φ14×19mm 20.8mm NGK No. 7 equivalent 50003-M35G 50003-M35G-4 NGK No. 8 equivalent 50003-M40G 50003-M40G-4 NGK No. 9 equivalent 50003-M45G 50003-M45G-4X type φ12×19mm 16mm NGK No. 8 equivalent 50003-M40X 50003-M40X-4XL type φ12×26.5mm 16mm NGK No. 9 equivalent 50003-M45XL 50003-M45XL-4 NGK No. 8 equivalent 50003-M40XL500 03-M40XL-4 Long reach type φ14×26.5mm 16mm Equivalent to NGK No. 7 50003-M35iL 50003-M35iL-4 Equivalent to NGK No. 8 50003-M40iL 50003-M40iL-4 Equivalent to NGK No. 9 50003-M45iL 50003-M45iL-4 HL type φ12×26.5mm 14mm Equivalent to NGK No. 8 50003-M40HL 50003-M40HL-4 Equivalent to NGK No. 9 50003-M45HL 50003-M45HL-4 Equivalent to NGK No. 10 50003-M50HL5 0003-M50HL-4 Conical Seat Long Reach φ14×25mm 16mm Equivalent to NGK #7 50003-M35LF 50003-M35LF-4 Equivalent to NGK #8 50003-M40LF 50003-M40LF-4 RE Type φ14×21.5mm 20.8mm Equivalent to NGK #9 50003-M45RE 50003-M45RE-4 Equivalent to NGK #10 50003-M50RE 50003-M50RE-4 Equivalent to NGK #10.5 50003-M25RE 50003-M25RE-4
Product Category: Claire Online Shop Parts Electronic Parts Spark Plug Set for 1 Vehicle, Motorcycle, Bicycle Automotive Ignition System Parts Spark Plugs
Product Code: 50003m40g-4

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