[Screw part φ12×26.5mm/Wrench 14mm Heat range equivalent to NGK No. 8/For light and compact cars with long reach type] This is a set of four HKS Super Fire Plugs Type-M, 50003M40HL. This is the strongest plug, enhanced with improved ignition performance, durability, and fouling resistance, bringing out the performance of tuned engines and also effective for normal engines, thanks to the selection of materials and a newly designed shape. 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 while also being highly durable, 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: 50003m40hl-4