BOLD MAGENTA part numbers are new for 2025 PARTS-UNLIMITED.COM 2025 | OFFROAD ELECTRICAL & GAUGES 1166 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 PLUG NGK REFERENCE # IK16 BKR5E, ZFR5F IW16 B6L, BR5ES, BPR5ES, BP5ES-11, BPR5ES-11, BPR5EVX-11 IW20 BP6ES, BPR6ES, BPR6ES-11, BPR6EVX-11, BP6EV IU22 C7E, CR7E IUF22 C7HSA, CR7HSA, C7HVX IW22 BP7ES, BPR7ES, BPR7ES-11, BP7EVX IWF22 B7HS, BR7HS, BP7HS, BPR7HS, B7HVX, BP7EVX IX22 D7EA, DR7EA, DR7ES, D7EVX IX22B DP7EA-9, DPR7EA-9, DPR7EVX-9, PJR7A IRIDIUM PLUG NGK REFERENCE # IU24 C8E, CR8E, CR8EVX IU24A CR8EK IW24 B8ES, BR8ES, BR8ES-11, B8EG, BR8EG, BR8EGV, B8EV, BR8EVX IWF24 B8HS, BR8HS, B8HV, B8HVX IX24 D8EA, DR8EA, DR8ES, DR8ESL, D8EVX IX24B DP8EA-9, DPR8EA-9, DP8EVX-9, DPR8EVX-9 IU27 C9E, CR9E, CR9EVX IU27A CR9EK IUH27 CR9EH-9, CR9EHVX-9 IRIDIUM PLUG NGK REFERENCE # IW27 B9ES, BR9ES, B9EG, BR9EG, B9EGV, B9EV, BR9EV, B9EVX, BR9EVX, BR9ECS IX27 D9EA, DR9EA, JR9B IX27B DP9EA-9, DPR9EA-9, DP9EVX-9, DPR9EVX-9 IU31A CR10EK IW31 B10EG, B10EGV, B10ES, B10EV, B10EVX, BPR10EVX, BR10ECS, BR10EG, BR10ES, BR10EV, BR10EYA IRIDIUM SPARK PLUGS BETTER METALS MEAN BETTER SPARK PLUG DESIGNS • Six times harder than platinum, iridium doesn’t melt in temperatures up to 4,000 °F •Because the iridium electrodes of these plugs can be shrunk to only 0.4 mm, voltage requirements decrease while firing performance improves •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 and stock these plugs 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” W20ES-U 14 mm 3/4” PLUG # THREAD REACH W22EP-U 14 mm 3/4” W22ES-U 14 mm 3/4” W24ES-U 14 mm 3/4” W24FS-U 14 mm 1/2” PLUG # THREAD REACH W27ES-U 14 mm 3/4” X22ES-U 12 mm 3/4” X24ES-U 12 mm 3/4” X27ES-U 12 mm 3/4” U-GROOVE SPARK PLUGS PART # THREAD REACH E3 PART # CHAMPION REF # NGK REF # 2103-0125 14 mm 3/4” E3.31 N84, N84G, N86, N86G, N87, N87G, RN2, RN2C, RN2G, RN3, RN3C, RN3G, RN7GY BR8EIX, BR8ES, BR8EV, BPR9EIX, BPR9ES, BPR9EVX, BR9EYA, BZ8ES, BZ9ES 2103-0083 14 mm 3/4” E3.34 RN7YC, RN9YC, RN10Y4, RN11YC, RN12MC4, RN12YC, RN14MC5, RN14PMP5, RN14YC BPR5EIX, BPR5ES, BPR6EIX, BPR6ES, BPR7EIX, BPR7ES, BUR4EB11, BUR5EB11, BUR6EA, BUR7EA11, GR45, GR4GP, GR4IX, GR55, GR5IX, IGR7AG, PGR5C11, PGR6A, PGR7A, ZGR5C 2103-0084 12 mm 3/4” E3.36 RA6HC, RA8HC D6EA, DCPR7E, DCPR7EIX, DCPR8E, DCPR8EIX, DPR7EA9, DPR7EIX, DPR8EIX9, DR7EIX, DR7ES, DR8EIX, DR8ES, IZKR7B 2103-0085 14 mm 3/4” E3.38 G3, G57C, G59C CR7E, CR7EIX, CR8E, CR8EHIX9, CR8EIX, CR9E, CR9EHIX9, CR9EIX, CR9HIX9, IMR8C9H, IMR9A9H, IMR9C9H, IMR9C9HE, IMR9D9H, MR8AI9, PMR6B, PMR7A, PMR8A, PMR8B, PMR9B E3 RESISTOR SPARK PLUGS •Unique electrode shape maximizes the power created by the spark plug – Diamond Fire technology •Electrode is a combination of performance and technology that results in an improved flame kernel shape •This flame front ignites the bulk air/fuel mixture faster, moves heat into the combustion chamber faster and creates a more localized pressure front for faster pressure rise during the cylinder power stroke •The result is more complete combustion and an improvement in engine performance •A truly premium performance plug •Sold each
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