BOLD MAGENTA part numbers are new for 2026 PARTS-UNLIMITED.COM 2026 | STREET ELECTRICAL & GAUGES 888 DISCLAIMER: *EMIS (EMISSIONS CATEGORIZATION CODE). SEE PAGES 4-6 FOR CATEGORY CODES, IMPORTANT EPA/CARB EMISSION DEFINITIONS AND REGULATORY COMPLIANCE AND NOTICE REGARDING NOISE REGULATIONS. PRODUCTS NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES IF NOT CATEGORIZED AS “1” OR “4”. IRIDIUM SPARK PLUGS • Six times harder than platinum, iridium doesn’t melt in temperatures up to 4,000 °F •360° laser welding of electrode provides a seal that resists wear even in the worst conditions •Ground electrode features a tapered cut and U-groove that form a large volume area for the flame’s center •Use NGK reference chart to order spark plugs U-GROOVE SPARK PLUGS PART # THREAD REACH IK20 14 mm 19 mm IW16 14 mm 19 mm IW20 14 mm 19 mm IU22 10 mm 19 mm IUF22 10 mm 12.7 mm IW22 14 mm 19 mm IX22B 12 mm 19 mm PART # THREAD REACH IU24 10 mm 19 mm IU24A 10 mm 19 mm IUH24 10 mm 19 mm IW24 14 mm 19 mm IWF24 14 mm 12.7 mm IX24 12 mm 19 mm IX24B 12 mm 19 mm PART # THREAD REACH IU27 10 mm 19 mm IU27A 10 mm 19 mm IUH27 10 mm 19 mm IW27 14 mm 19 mm IX27 12 mm 19 mm IU31A 10 mm 19 mm HOT “U” RESISTOR PLUGS PLUG # THREAD REACH W24ESR-U 14 mm 3/4” W27ESR-U 14 mm 3/4” PLUG # THREAD REACH X22EPR-U9 12 mm 3/4” X24EPR-U9 12 mm 3/4” PLUG # THREAD REACH X24ESR-U 12 mm 3/4” HOT “U” STANDARD PLUGS PLUG # THREAD REACH U22FS-U 10 mm 1/2” W16FS-U 14 mm 1/2” W20EP-U 14 mm 3/4” W22EP-U 14 mm 3/4” PLUG # THREAD REACH W22ES-U 14 mm 3/4” W24ES-U 14 mm 3/4” W24FS-U 14 mm 1/2” W27ES-U 14 mm 3/4” PLUG # THREAD REACH X22ES-U 12 mm 3/4” X24ES-U 12 mm 3/4” X27ES-U 12 mm 3/4” IRIDIUM PLUG NGK REFERENCE # IK20 BKR6E, BKR6E-11 IW16 BP5ES, BPR5ES, BP5ES-11, BPR5ES-11, BPR5EVX-11, BPR5EIX, ZGR5C IW20 BP6ES, BPR6ES, BPR6ES-11, BPR6EVX-11, BP6EV, BPR6EIX-11 IU22 C7E, CR7E IUF22 C6HA, C6HSA, CR6HS, CR6HSA, C7HSA, CR7HS, CR7HSA, C7HVX IW22 BP7ES, BPR7ES, BPR7ES-11, BP7EVX, BPR7EIX IX22B DP7EA-9, DPR7EA-9, DPR7EVX-9, DPR7EIX-9, PJR7A IU24 C8E, CR8E, CR8EVX, CR8EIX IU24A CR8EK IUH24 CR8EH-9, CR8EHIX-9 IW24 B8EG, B8ES, B8EGV, B8EV, B8EVX, BP8ES, BPR8EX, BR8ES, BR8ES-11, BR8EG, BR8EV, BR8EVX, BR8EIX, R4118S-8 IRIDIUM PLUG NGK REFERENCE # IWF24 B8HS, B8HV, B8HVX, BR8HS IX24 D8EA, D8EVX, DR8EA, DR8ES, DR8ESL, D8EIX IX24B DP8EA-9, DP8EVX-9, DPR8EA-9, DPR8EIX-9 IU27 C9E, CR9E, CR9EVX, CR9EIX IU27A CR9EK IUH27 CR9EH-9, CR9EHVX-9, CR9EHIX-9 IW27 B9EG, B9EGV, B9ES, B9EV, B9EVX, BPR9ES, BPR9EVX, BR9ECS, BR9EG, BR9ES, BR9EV, BR9EVX, BR9EYA, BR9EIX, R4118S-9 IX27 D9EA, DR9EA, DR9EIX, J9A, JR9B, JR9C IU31A CR10EK
RkJQdWJsaXNoZXIy OTcxOTk3