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Honda Motorcycles Spark Plug Size Guide

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Honda Spark Plug Fitment Chart

ManufacturerModelStandard PlugIridium PlugElectrode Gap
HONDA@ 125 (NES 125)NGK CR8EH-9 0.8-0.9 MM
HONDAANF 125 INNOVANGK CPR6EA-9 0.9 MM
HONDACA 125 REBELNGK CR6HSANGK CR6HIX0.7 MM
HONDACB 1000 FNGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDACB 1000 R/+ NEO SPORTS CAFÉNGK IMR9E-9HES 0.8-0.9 MM
HONDACB 1000 R / RANGK IMR9E-9HES 0.8-0.9 MM
HONDACB 1100NGK LMAR8A-950.9 MM
HONDACB 1100 EX (EURO 4)NGK LMAR8A-9S 0.9 MM
HONDACB 1100 EX (SPEICHENRÄDER)NGK LMAR8A-9S 0.9 MM
HONDACB 1100 F / F2 SUPER BOL D’ORNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 1100 RNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 1100 RNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 1100 RS (EURO 4)NGK LMAR8A-9S 0.9 MM
HONDACB 125 FNGK CPR7EA-9NGK CR7EIX 
HONDACB 125 F (EURO 4)NGK CPR7EA-9NGK CPR7EAIX-9 
HONDACB 125 KNGK DR8HS 0.7-0.8 MM
HONDACB 125 R NEO SPORTS CAFÉNGK CR8ENGK CR8EIX 
HONDACB 125 SNGK DR8ES 0.6-0.7 MM
HONDACB 125 T (TWIN)NGK CR8HS 0.6-0.7 MM
HONDACB 125 T2 (TWIN)NGK CR8HS = 7 KWNGK CR7HS = 13KW0.6-0.7 MM
HONDACB 1300NGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDACB 1300 (ABS)NGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDACB 1300 SNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDACB 250 GNGK B8ES 0.7-0.8 MM
HONDACB 250 N (EURO-SPORT)NGK DR8ES-LNGK DR8EIX0.7 MM
HONDACB 250 N / NDNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 250 RSNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 300 R NEO SPORTS CAFÉ   
HONDACB 350NGK B8ES 0.6-0.7 MM
HONDACB 350 F FOURNGK DR8ESNGK DR8ES-L0.6-0.7 MM
HONDACB 360 G (DISC)NGK B8ES 0.7-0.8 MM
HONDACB 400 FOURNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 400 NNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 400 N / EURO-SPORTNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 450 K1-K5NGK B8ES0.7-0.8 MM
HONDACB 450 NNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 450 SNGK DR8ES-LNGK DR8EIX0.7 MM
HONDACB 50 JNGK CR6HSNGK CR6HIX0.7 MM
HONDACB 500NGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACB 500NGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDACB 500 FNGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDACB 500 F (EURO 4)NGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDACB 500 F (EURO 4)NGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDACB 500 F / FANGK CPR8EA-9NGK CPR8EAIX-90.8 – 0.9 MM
HONDACB 500 FOURNGK DR7ES0.6 MM
HONDACB 500 TWINNGK B8ESNGK BR8EIX0.8 MM
HONDACB 500 XNGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDACB 500 X (EURO 4)NGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDACB 500 X / XANGK CPR8EA-9NGK CPR8EAIX-90.8 – 0.9 MM
HONDACB 500 / S / CUPNGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDACB 550 F1 / F2 (FOUR-IN-ONE)NGK DR7ES0.7 MM
HONDACB 550 K3NGK DR7ES0.7 MM
HONDACB 600 F HORNETNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACB 600 F HORNETNGK CR9EH-9NGK CR9 EHIX-90.9 MM
HONDACB 600 F HORNETNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACB 600 F HORNETNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACB 600 F HORNETNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACB 600 F / S HORNETNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACB 650NGK DR8ES-LNGK DR8EIX0.7 MM
HONDACB 650 CNGK DR8ES-LNGK DR8EIX0.7 MM
HONDACB 650 FNGK CR9EH-9 0.8-0.9 MM
HONDACB 650 F (EURO 4)NGK CR9EH-9 0.8-0.9 MM
HONDACB 650 R NEO SPORTS CAFÉNGK IMR9E-9HES  
HONDACB 650 SCNGK DR8ES-LNGK DR8EIX0.7 MM
HONDACB 72 DREAMC7HWC10H0.6-0.7 MM
HONDACB 750 CNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 750 F BOL D’OR (FA / B / C / 2)NGK DR8ESNGK DR8EIX0.7 MM
HONDACB 750 F1 / F2NGK DR8ESNGK DR8EIX0.7 MM
HONDACB 750 FOUR K0-K6NGK DR8ESNGK DR8EIX0.7 MM
HONDACB 750 FOUR K7NGK DR8ES-LNGK DR8EIX0.7 MM
HONDACB 750 K (KZ / KA / KB)NGK DR8ES-LNGK DR8EIX0.7 MM
HONDACB 750 NIGHT HAWKNGK DPR8EA-9NGK DPR8EIX-90.8-0.9 MM
HONDACB 900 F BOL D’ORNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 900 F HORNETNGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDACB 900 F / F2 BOL D’ORNGK DR8ESNGK DR8EIX0.7 MM
HONDACB 900 FB BOL D’ORNGK DR8ESNGK DR8EIX0.7 MM
HONDACB SEVEN FIFTYNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDACB TWO-FIFTYNGK CR6HSANGK CR6HIX0.7 MM
HONDACB-1 (CB400 F)NGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDACBF 1000NGK CR8EH-9NGK CE8EHIX0.9 MM
HONDACBF 1000 FNGK IMR8C-9HES 0.8-0.9 MM
HONDACBF 125NGK CPR7EA-9NGK CPR7EAIX-90.9 MM
HONDACBF 250NGK CR8EH-9S0.9 MM
HONDACBF 500 / ABSNGK CR8EH-9S0.9 MM
HONDACBF 600 / ABSNGK CR8EH-9NGK CR8EHIX-90.9MM
HONDACBF 600 / ABSNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACBF 600 S / ABSNGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDACBF 600 S / ABSNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACBR 1000 FNGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDACBR 1000 FNGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDACBR 1000 F / DUALNGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDACBR 1000 F / DUALNGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDACBR 1000 RR FIREBLADENGK IMR9E-9HES0.9 MM
HONDACBR 1000 RR FIREBLADENGK IMR9E-9HES0.9MM
HONDACBR 1000 RR FIREBLADENGK IMR9C-9HES0.9 MM
HONDACBR 1000 RR FIREBLADENGK IMR9C-9HES0.9 MM
HONDACBR 1000 RR FIREBLADE (EURO 4)NGK IMR9E-9HES 0.8-0.9 MM
HONDACBR 1000 RR FIREBLADE SP (EURO 4)NGK IMR9E-9HES 0.8-0.9 MM
HONDACBR 1000 RR SP FIREBLADE   
HONDACBR 1000 RR SP-2 LIwithED EDITION   
HONDACBR 1000 RR / ABS FIREBLADENGK IMR9E-9HES0.9 MM
HONDACBR 1000 RR-R FIREBLADE (EURO 5)   
HONDACBR 1000 RR-R FIREBLADE SP (EURO 5)   
HONDACBR 1100 XX BLACKBIRD NGK CR9EHIX-90.9
HONDACBR 1100 XX BLACKBIRD NGK IMR9C-9H ’01-0.9 MM
HONDACBR 125 RNGK CR9ENGK CR9EIX0.7 MM
HONDACBR 125 RNGK CR8ENGK CR8EIX0.8 MM
HONDACBR 125 RNGK CR8ENGK CR8EIX0.7MM-0.8MM
HONDACBR 250 R / RANGK SIMR8A9 0.8-0.9 MM
HONDACBR 300 R / RANGK SIMR8A9  
HONDACBR 400 RRNGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDACBR 500 RNGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDACBR 500 R (EURO 4)NGK CPR8E-9  
HONDACBR 500 R / RANGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDACBR 600 FNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACBR 600 FNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDACBR 600 FNGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDACBR 600 FNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACBR 600 FNGK CR9EH-9 0.8-0.9 MM
HONDACBR 600 F (EINSPRITZER)GEM. HONDA ANGABEN  
HONDACBR 600 F (VERGASER)NGK CR9EH-9NGK CR9EHIX-90.8-0.9 MM
HONDACBR 600 FS SPORTNGK MR9A-9H  
HONDACBR 600 RRNGK IMR9C-9HES0.9 MM
HONDACBR 600 RRNGK IMR9E-9ES  
HONDACBR 600 RRNGK IMR9C-9H 0.9 MM
HONDACBR 600 RRNGK IMR9C-9HES 0.8-0.9 MM
HONDACBR 600 RR / ABSNGK IMR9E-9HES 0.9 MM
HONDACBR 650 FNGK CR9EH-9NGK CR9EHIX-90.8-0.9 MM
HONDACBR 650 F (EURO 4)NGK CR9EH-9NGK CR9EHIX-90.8-0.9 MM
HONDACBR 650 RNGK IMR9E-9HES  
HONDACBR 900 RR FIREBLADENGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACBR 900 RR FIREBLADENGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACBR 900 RR FIREBLADENGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDACBR 900 RR FIREBLADENGK IMR9A-9H0.9 MM
HONDACBR 900 RR FIREBLADENGK IMR9C-9H0.9 MM
HONDACBX 1000NGK DR8ES-LNGK DR8EIX0.7 MM
HONDACBX 1000 (PRO-LINK)NGK DR8ES-LNGK DR8EIX0.7 MM
HONDACBX 1000 (US-PRODUKTION)NGK DR8ES-LNGK DR8EIX0.7 MM
HONDACBX 550 F / F2NGK DR8ESNGK DR8EIX0.7 MM
HONDACBX 650 ENGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDACBX 750 FNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDACG 125NGK DPR8EA-9NGK DPR8EIX0.8MM
HONDACH 125 SPACYNGK DPR7EA-9NGK DPR7EIX-90.9MM
HONDACJ 250NGK B8ESNGK BR8EIX0.8MM
HONDACJ 360 TNGK B8ES 0.7-0.8 MM
HONDACL 250 SNGK DR8ES-LNGK DR8ES0.6-0.7 MM
HONDACLR 125 CITYFLYNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDACM 125 CNGK CR7HS 0.6-0.7 MM
HONDACM 185 TNGK CR7HSNGK CR7HIX0.7 MM
HONDACM 200 TNGK CR7HSNGK CR7HIX0.7 MM
HONDACM 250 CNGK CR7HSNGK CR7HIX0.6-0.7 MM
HONDACM 400 TNGK DR8ESNGK DR8EIX0.7 MM
HONDACMX 250 C REBELNGK CR6HSNGK CR6HIX0.7 MM
HONDACMX 250 REBELNGK CR6HSANGK CR6HIX0.7 MM
HONDACMX 500 (EURO 5)NGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDACMX 500 REBEL (EURO 4)NGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDACN 250 HELIXNGK DPR6EA-90.9 MM
HONDACR 250 R CROSSNGK BR9EGNGK BR9EIX0.6 MM
HONDACRF 1000 L AFRICA TWINNGK SILMAR8A9SDOPPELZÃœNDUNG0.8-0.9 MM
HONDACRF 1000 L AFRICA TWIN (DCT)NGK SILMAR8A9SDOPPELZÃœNDUNG 
HONDACRF 1000 L AFRICA TWIN (EURO 4)NGK SILMAR8A9SDOPPELZÃœNDUNG0.8-0.9 MM
HONDACRF 1000 L AFRICA TWIN ADVENTURENGK SILMAR8A9SDOPPELZÃœNDUNG 
HONDACRF 1100 L A.T. ADVENTURE SPORT (EURO 5)   
HONDACRF 1100 L A.T. ADVENTURE SPORT ES   
HONDACRF 1100 L A.T. ADVENTURE SPORTS DCT   
HONDACRF 1100 L A.T. ADVENTURE SPORTS DCT ES   
HONDACRF 1100 L AFRICA TWIN (EURO 5)   
HONDACRF 1100 L AFRICA TWIN DCT (EURO 5)   
HONDACRF 250 LNGK SIMR8A9 0.8-0.9 MM
HONDACRF 250 L (EURO 4)NGK SIMAR8A9  
HONDACRF 250 MNGK SIMR8A9  
HONDACRF 250 RALLY (EURO 4)   
HONDACRF 450 LNGK SILMAR9A9SNGK SILMAR10A9S 
HONDACROSSRUNNER (VFR 800 X)NGK IMR9D-9HVOREINGESTELLT
HONDACROSSRUNNER 800 (VFR 800 X EURO 4)NGK IMR9D-9H 0.8-0.9 MM
HONDACROSSRUNNER 800 (VFR 800 X)NGK IMR9D-9H 0.8-0.9 MM
HONDACROSSTOURER (VFR 1200 X / XD)NGK IMR8E-9HES 0.8 – 0.9 MM
HONDACROSSTOURER(VFR 1200 X / XD EURO 4)NGK IMR8E-9HES  
HONDACTX 1300 DXNGK CR8EH-9NGK CR8EHIX-9 
HONDACTX 700 NNGK IFR6G-11K 1.0-1.1 MM
HONDACX 500 (Shaft-Drive)NGK DR8ES-LNGK DR8EIX0.7 MM
HONDACX 500 CNGK DR8ES-LNGK DR8EIX0.7 MM
HONDACX 500 E (EURO)NGK DR8ES-LNGK DR8EIX0.6 MM
HONDACX 500 TURBO NGK DPR8EIX-90.9 MM
HONDACX 650 CNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDACX 650 ENGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDACX 650 TURBO NGK DPR8EIX-90.9 MM
HONDACY 50NGK CR6HSNGK CR6HIX0.7 MM
HONDADN-01 NSA 700 ANGK CPR8EA-9 08-10CPR8EAIX-9 08-100.9 MM
HONDAF6C GOLD WINGNGK BKR6E-11NGK BKR6EIX-111.0-1.1 MM
HONDAF6C VALKYRIE (GL 1500 C)NGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAFES 125 PANTHEON (2-Stroke-Oil)NGK BR8ESNGK BR8EIX0.7 MM
HONDAFES 125 PANTHEON (4-Stroke)NGK CR8EH-9 0.7-0.8 MM
HONDAFES 150 PANTHEONNGK BR8ESNGK BR8EIX 
HONDAFES 250 FORESIGHT (4-Stroke)NGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAFES 250 FORESIGHT (4-Stroke)NGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAFMX 650NGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAFT 500NGK DR8EANGK DR8EIX0.7 MM
HONDAFX 650 VIGORNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAGB 500 CLUBMANNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAGL 1000 K0-K2 GOLD WINGNGK DR8ES-LNGK DR8EIX0.7 MM
HONDAGL 1000 K3 GOLD WINGNGK DR8ES-LNGK DR8EIX0.7 MM
HONDAGL 1100 / DX GOLD WINGNGK DP8ES-L BIS 81NGK DPR8EA-9 From 820.7 – 0.9 MM
HONDAGL 1200 DX GOLD WINGNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAGL 1500 / SE GOLD WINGNGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAGL 1800 GOLD WINGNGK BKR6E-11NGK BKR6EIX-111.0-1.1 MM
HONDAGL 1800 GOLD WINGNGK CR6HSB-9 0.8-0.9 MM
HONDAGL 1800 GOLD WINGNGK CR6HSB-9 0.8-0.9
HONDAGL 1800 GOLD WINGNGK BKR6E-11NGK BKR8EIX-111.1 MM
HONDAGL 1800 GOLD WINGNGK BKR6E-11NGK BKR6EIX-111.1 MM
HONDAGL 1800 GOLD WING (with AIRBAG)NGK BKR6E-11NGK BKR6EIX-111.0-1.1 MM
HONDAGL 1800 GOLD WING DCTNGK CR6HSB-9 0.8-0.9
HONDAGL 1800 GOLD WING TOURNGK CR6HSB-9 0.8-0.9 MM
HONDAGL 1800 GOLD WING TOURNGK CR6HSB-9 0.8-0.9
HONDAGL 1800 GOLD WING TOUR DCTNGK CR6HSB-9 0.8-0.9 MM
HONDAGL 1800 GOLD WING TOUR DCTNGK CR6HSB-9 0.8-0.9
HONDAGL 500 D SILVER WINGNGK DR8ES-LNGK DR8EIX0.6 MM
HONDAGL 650 D SILVER WINGNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAGOLD WING F6BNGK BKR6E-11NGK BKR6EIX-111.1 MM
HONDAGOLD WING F6CNGK BKR6E-11NGK BKR6EIX-111.1 MM
HONDALEAD 100NGK CR6HSA 0.6-0.7 MM
HONDAMB 50NGK BR7HSNGK BR7HIX0.7MM
HONDAMB 80 SNGK BR8HSNGK BR8HIX0.7 MM
HONDAMBX 50 S / SDNGK BR9ES (S)NGK BR6ES (SD)0.7 MM
HONDAMBX 80 SW-D-2NGK BR9ESNGK BR9EIX0.8 MM
HONDAMCX 80 SNGK BR9ESNGK BR9EIX0.8 MM
HONDAMONKEY Z 125NGK CPR6EA-9 0.8-0.9 MM
HONDAMSX 125NGK CPR6EA-9 0.8-0.9 MM
HONDAMSX 125NGK CPR6EA-9 0.8-0.9 MM
HONDAMT 50 SNGK BR7HSNGK BR7HIX0.6-0.7 MM
HONDAMT 80NGK BR8HSNGK BR8HIX0.7 MM
HONDAMTX 125NGK BR9ESNGK BR9EIX0.8MM
HONDAMTX 200 RWNGK BR9ESNGK BR9EIX0.7 MM
HONDAMTX 50NGK BR7HSNGK BR7HIX0.7MM
HONDAMTX 50 SNGK BR7HSNGK BR7HIX0.7 MM
HONDAMTX 80 CNGK BR9HSNGK BR9HIX0.8 MM
HONDAMTX 80 RNGK BR9ES 0.6-0.7 MM
HONDAMTX 80 R2NGK BR9ES 0.7-0.8 MM
HONDANC 700 D INTEGRANGK IFR6G-11K 1.1 MM
HONDANC 700 SNGK IFR6G-11K 1.1 MM
HONDANC 700 XNGK IFRG6G-11K  
HONDANC 750 D INTEGRANGK IFR6G-11K  
HONDANC 750 D INTEGRA (EURO 4)NGK IFR6G-11K  
HONDANC 750 J NM4 VULTUSNGK IFR6G-11K 1-1.1 MM
HONDANC 750 S / SD (OHNE / with DCT)NGK IFR6G-11K  
HONDANC 750 S / SD (OHNE / with DCT) (EURO 4)NGK IFR6G-11K  
HONDANC 750 X / XD (OHNE / with DCT)NGK IFR6G-11K  
HONDANC 750 X / XD (OHNE / with DCT) (EURO 4)NGK IFR6G-11K  
HONDAND 50 MELODYNGK BPR6HS 0.7-0.8 MM
HONDANH 125 D LEADNGK BPR6HS 0.6-0.7 MM
HONDANH 50 LEADNGK BPR6HSNGK BPR6HIX0.6 MM
HONDANH 80 LEADNGK BPR6HSNGK BPR6HIX0.7 MM
HONDANHX 110 LEADNGK CR8EH-9NGK CR8HIX-90.8-0.9 MM
HONDANS 400 RNGK BR9ES 0.8 MM
HONDANSC 50 RNGK CR7HSANGK CR7HIX 
HONDANSR 125 RNGK BR9ECS 0.8 MM
HONDANSR 125 RNGK BR9ECS 0.8 MM
HONDANSR 50 SNGK BR5ES 0.7-0.8 MM
HONDANSS 125 FORZANGK SILMAR8C9 0.8-0.9 MM
HONDANSS 125 FORZA (EURO 4)NGK SILMAR8C9 0.8-0.9 MM
HONDANSS 250 FORZANGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDANSS 250 JAZZ ES-ABSNGK LMAR8A-9  
HONDANSS 300 FORZA   
HONDANSS 300 FORZANGK LMAR8A-9  
HONDANT 650 HAWK GTNGK DPR8EA-9NGK DPR8EIX-90.8-0.9 MM
HONDANT 650 V DEAUVILLENGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDANT 650 V DEAUVILLENGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDANT 700 DEAUVILLENGK CPR8EA-9NGK CPR8EAIX-90.9 MM
HONDANTV 650 REVERENGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDANX 250NGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDANX 250NGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDANX 650 DOMINATORNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDANX 650 DOMINATORNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAPC 800 PACIFIC COASTNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAPCX 125NGK CR7EA-9 0.8-0.9 MM
HONDAPCX 125NGK CPR7EA-9 0.8-0.9 MM
HONDAPCX 125NGK MR8K-9 0.8-0.9 MM
HONDAPS 125I (PES 125)NGK CR8EH-9 0.8-0.9 MM
HONDAPS 150INGK CR8EH-9 0.9MM
HONDAPS 250 BIG RUCKUSNGK DPR7EA-9  
HONDARVF 750 RNGK CR9EHIX 0.9 MM
HONDASES 125 DYLANNGK CR8EH-9 0.8-0.9 MM
HONDASFX 50 / SPORTNGK BR6HSA 0.7MM
HONDASGX 50 SKYNGK BR6HSANGK BR6HIX0.6 MM
HONDASH 100 SCOOPYNGK BR6HSA  
HONDASH 125NGK CR8EH-9 0.8-0.9 MM
HONDASH 125 MODENGK CPR7EA-9NGK CR7EIX 
HONDASH 125I   
HONDASH 125I (EURO 4)NGK CPR7EA-9NGK CPR7EIAX-9 
HONDASH 125I (EURO 5)   
HONDASH 150INGK CPR7EA-9NGK CPR7EAIX-90.8-0.9 MM
HONDASH 150I (EURO 4)NGK CR8EH-9  
HONDASH 150I (EURO 5)   
HONDASH 300 INGK LMAR8A-9 0.9 MM
HONDASH 300 INGK LMAR8A-9 0.8-0.9 MM
HONDASH 300 INGK LMAR8A-9 0.8-0.9 MM
HONDASH 50 FIFTYNGK BR6HSANGK BR6HIX 
HONDASH 50 SCOOPYNGK BPR4HSNGK BPR6HSA From 96-0.6-0.7 MM
HONDASILVER WING 400NGK CR8EH-9 0.9 MM
HONDASILVER WING / ABS (FJS 600)NGK CR8EH-9NGK CR8EHIX-90.8-0.9 MM
HONDASJ 100 BALI EXNGK BR6HSA 0.6-0.7 MM
HONDASJ 50 BALINGK BR6HSA 0.6-0.7 MM
HONDASL 125 SNGK DR8ES-L 0.6-0.7 MM
HONDASLR 650NGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDASRX 90 SHADOWNGK BR6HSA 0.6-0.7 MM
HONDASS 50 / MNGK C7HSA (70-75)NGK CR6HIX (70-75)0.7 MM
HONDAST 1100 PAN EUROPEANNGK CR8EH-9NGK CR8EHIX-90.8 MM
HONDAST 1100 PAN EUROPEAN (ABS / TCS)NGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDAST 1300 PAN EUROPEAN (ABS)NGK CR8EH-9NGK CR8EHIX-90.8-0.9 MM
HONDAST 50 DAXNGK CR6HSA 0.6-0.7 MM
HONDAST 50 G DAXNGK CR6HSANGK CR6HIX0.7 MM
HONDAST 70 DAXNGK CR7HSANGK CR7HIX0.6-0.7 MM
HONDASUPER CUB C125 ABSNGK CPR6EA-9 0.8-0.9 MM
HONDAS-WING 125 / ABSNGK CR8EH-9 0.7-0.9 MM
HONDASW-T400NGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDASW-T600 SILVER WINGNGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDASW-T600 SILVER WINGNGK CR8EH-9NGK CR8EHIX-90.8 – 0.9 MM
HONDATRX 250 TENGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDATRX 350 FENGK DPR7EA-9NGK DPR7EIX-90.9
HONDATRX 350 FMNGK DPR7EA-9NGK DPR7EIX-90.9
HONDATRX 400NGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDATRX 450 FENGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDATRX 450 RNGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDATRX 500 FANGK BKR5E-11 0.9 MM
HONDATRX 500 TMNGK BKR5E-11 0.9 MM
HONDATRX-650 RINCONNGK IFR5L-11 1.1 MM
HONDAVF 1000 F (INTERCEPTOR)NGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVF 1000 F2NGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDAVF 1000 RNGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDAVF 1100 CNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVF 500 F / FIINGK DPR8EA-9 (F)NGK DPR9EA-9 (F2)0.9 MM
HONDAVF 750 C (CC / CD / CE)NGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVF 750 C MAGNANGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDAVF 750 F (INTERCEPTOR)NGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVF 750 S / SD (SABRE)NGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVFR (800)NGK IMR9B-9H0.9 MM
HONDAVFR 1200 F / FD (with DCT)NGK IMR9E-9HES 0.8 – 0.9 MM
HONDAVFR 400 RNGK ER9EHNGK ER9EHIX0.7 MM
HONDAVFR 400 RNGK DPR8EA-9(NC21)NGK C8EH-9 (NC24)0.9 MM
HONDAVFR 750 FNGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDAVFR 750 FNGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDAVFR 750 FNGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDAVFR 750 FNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDAVFR 750 RNGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDAVFR 800NGK IMR9B-9H0.9 MM
HONDAVFR 800 (ABS)NGK IMR9B-9H0.9 MM
HONDAVFR 800 FNGK IMR9D-9HVOREINGESTELLT
HONDAVFR 800 F (EURO 4)NGK IMR9D-9H 0.8-0.9 MM
HONDAVFR 800 FINGK CR9EH-9NGK CR9EHIX-90.9 MM
HONDAVISION 110 (NSC110 WH)NGK CPR8EA-9NGK CPR8EAIX-90.8-0.9 MM
HONDAVISION 50 (NSC 50)NGK CR7HSANGK CR7HIX 
HONDAVT 1100 C SHADOWNGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAVT 1100 C2 SHADOW ACENGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAVT 1100 C3 SHADOW AERONGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAVT 125 C SHADOWNGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDAVT 125 C / C2 SHADOWNGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDAVT 1300 CX (FURY)NGK DCPR6E 0.8 MM
HONDAVT 500 CNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVT 500 ENGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVT 600 C SHADOWNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVT 750 CNGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAVT 750 C SHADOWNGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAVT 750 C SHADOW (OHNE ABS)NGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAVT 750 C SHADOW ABSNGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAVT 750 C / C2 SHADOWNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVT 750 C2B BLACK SPIRITNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVT 750 DC BLACK WIDOWNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVT 750 SNGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAVT 750 SPIRITNGK DPR7EA-9NGK DPR7EIX-90.9 MM
HONDAVT 750 SPIRITNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAVTR 1000 F FIRESTORMNGK DPR9EVX90.9 MM
HONDAVTR 1000 SP-1NGK FR9BI-111.1 MM
HONDAVTR 1000 SP-2NGK IFR9H-11 1.1 MM
HONDAVTX 1300NGK DCPR6E0.8 MM
HONDAVTX 1800NGK IFR6L-111.1 MM
HONDAWAVE 110 I (AFS 110 2 SH)NGK CPR6EA-9S 0.8-0.9 MM
HONDAX4 (CB 1300 DC)NGK DPR9EA-9NGK DPR9EIX-90.9 MM
HONDAX8R-S / X (SZX50 S / X)NGK BR6HSA 0.6-0.7 MM
HONDAX-ADV   
HONDAX-ADV (EURO 4)NGK IFR6G-11K  
HONDAXBR 500 / SNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAX-ELEVEN (CB 1100 SF)NGK CR8EHVX-9NGK CR8EHIX-90.9 MM
HONDAXL 1000 V VARADERONGK DPR8EIX-90.9 MM
HONDAXL 1000 V VARADERONGK DPR8EVX-9 / VERGNGK IJR8B-9 / INJECT0.9 MM
HONDAXL 1000 V VARADERONGK IJR8B-90.9 MM
HONDAXL 1000 V VARADERONGK IJR8B90.9 MM
HONDAXL 125NGK DR8ES-LNGK DR8EIX0.6 MM
HONDAXL 125 V VARADERONGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDAXL 125 V VARADERO (VARADERO 125)NGK CR8EH-9NGK CR8EHIX-90.9 MM
HONDAXL 185 SNGK DR8ES-L0.6-0.7 = 13 KW0.5-0.6 = 7 KW
HONDAXL 200 RNGK DR8EANGK DR8EIX0.7 MM
HONDAXL 250 RNGK DR8ES-LNGK DR8EIX0.7 MM
HONDAXL 250 RNGK DPR9Z0.7 MM
HONDAXL 250 SNGK DR8ES-LNGK DR8EIX0.6 MM
HONDAXL 350 RNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXL 50NGK CR6HS 0.6-0.7 MM
HONDAXL 500 RNGK DR8ES-LNGK DR8EIX0.7 MM
HONDAXL 500 SNGK DR8ES-LNGK DR8EIX0.7 MM
HONDAXL 600 LM / RMNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXL 600 RNGK DPR8EA-9NGK DP8EIX-90.9 MM
HONDAXL 600 V TRANSALPNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXL 600 V TRANSALPNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXL 600 V TRANSALPNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXL 650 V TRANSALPNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXL 650 V TRANSALPNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXL 700 V TRANSALPNGK CPR8EA-9NGK CPR8EAIX-90.9 MM
HONDAXLR 125 RNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXLV 750 RNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXR 125 LNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXR 400 RNGK DPR8Z 0.6-0.7 MM
HONDAXR 600 RNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXR 600 RNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXR 650 RNGK BKR8E-11 1.1 MM
HONDAXRV 650 AFRICA TWINNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXRV 750 AFRICA TWINNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAXRV 750 AFRICA TWINNGK DPR8EA-9NGK DPR8EIX-90.9 MM
HONDAZ 50 JZ / GZ MONKEY / GORILLANGK CR6HSNGK CR6HIX0.6 MM
HONDAZ 50 / J MONKEYNGK CR6HSNGK CR6HIX 
HONDAZOOMER 50NGK ER8EH-NNGK ER8EHIX0.6-0.7 MM

Reading your spark plug

spark plug colour guide 411x305 - Honda Motorcycles Spark Plug Size Guide

The image of the spark plugs above shows four common conditions that you’ll find your spark plugs in. From left to right the plugs are Normal, Rich, Lean and Very Lean. Full descriptions below.

Before you throw your old spark plug in the bin, check them to get an understanding of how well your engine is running.

Normal condition

If the plug is brown or light grey your can assume your engine is in good condition and the spark plug is functioning well. Even when a plug is in good condition small deposits will accumulate. This is normal.

Rich

There are many different causes of spark plug fouling. If the plug has oil on it, then it’s oiling up and may not work efficiently, potentially causing a misfire or stuttering under hard acceleration. If it’s just dark or black the bike could be running too rich. A heavy accumulation of carbon on the nose can cause a leakage path to earth. This can cause misfires and poor engine starting.

Causes: The causes of this can be anything from, a rich fuel mixture, too much choke, long periods of low-speed riding or idling in traffic, a blocked air filter or the plug’s heat range is too cold.

Lean

If the engine is running lean then the spark plug has a grey colour but you’ll probably see some black deposits on there too.

Causes: Insufficient cooling, blocked injectors, too lean a fuel mixture

Very Lean

If the engine is running dangerously lean the whole plug tip will be grey or white. If the temperature is over 850-degrees, pre-ignition may occur. Engine power will be reduced and you risk piston damage.

Causes: Insufficient cooling, blocked injectors, too lean a fuel mixture, ignition timing too far advanced, excessive combustion chamber deposits.

Motorcycle Spark Plug Fitting Guide + Tips

  • When you’ve removed your spark plugs, check the condition of the threads in the cylinder head and put a cloth over the cylinder head if you’re going to leave it exposed.

  • Install each spark plug by hand until you have wound the thread a couple of turns. This reduces the chances of you cross-threading the plug.

  • Torque the spark plug up to your manufacturer’s recommended settings. If you don’t have a torque wrench, then get the plug hand tight and then add a ½ turn for a plug with a gasket, and more like a ¼ turn for a tapered spark plug. Over-tightening can snap the spark plug – a nightmare.

  • Don’t put any lubricant or thread lock on the spark plug. Inspect your spark plug caps and replace if required.

Iridium Spark Plug vs Standard

A regular spark plug uses a copper central electrode whereas an iridium spark plug uses, you guessed it, iridium.

The metal in a spark plug has a single purpose: to channel the electrical energy through the spark plug. Iridium is far harder than copper and this allows the spark plug manufacturers to create a plug with a sharper ‘tip’ which better focuses the spark around the centre electrode without compromising its service life.

A typical copper spark plug will last around 20,000 miles and most get changed at a major service (usually around 16,000 miles) but an iridium spark plug will be good for around 50,000 miles and you do see people running them to 100,000 miles with no issues.

Copper is generally seen as being the best metal to use in terms of conductivity but iridium plugs are seen as premium as they last longer than standard plugs and can be built with smaller tolerances. Iridium spark plugs also have lower voltage requirements, meaning they perform better when starting and idling and some manufacturers also claim they offer a better throttle response.

Iridium plugs are more expensive than copper but seeing as they last longer and offer a more consistent performance throughout their lifetime, many bikes opt for an iridium ‘upgrade’.

Spark Plug Removal

 

halfords socket set 500x202 - Honda Motorcycles Spark Plug Size Guide

If you’re going to be doing any sort of work on the bike, treat yourself to a decent set of tools. Most of mine are from the Halfords Advanced range (formerly called Professional).

They have a lifetime guarantee and for an amateur bodger like me, they’re perfect.

The image above shows their 100pc range, which costs around £125. It’s a comprehensive bit of kit and includes a 1/4″, 3/8″ and 1/2″ drive, alongside plug sockets, universal joints and a wobble bar. Pretty much everything you’ll ever need for any motorcycle maintenance job.

Motorcycle Spark Plug Removal Tools

If you’ve not changed your plugs before, give yourself a couple of hours to complete the task. Here are the essentials you need for smooth re-plugging:

Your owner’s manual
You’ll need this to help you find the location of your spark plugs and how to access them. This may sound simple but often the manual offers up some time-saving tips for your particular model.

A spark plug socket
You’ll need a deep socket. A decent tool kit will have them. Don’t get confused between thread size and socket size. Motorcycle spark plug socket sizes are usually 16mm, 18mm or 20.6mm (21mm will do). Whereas the threads are usually 10mm, 12mm or 14mm. When it comes to motorcycles, access is usually tricky, so my tip is to buy a magnetic spark plug socket like this one. Once you’ve undone your old plug, this will help you remove it with far less effing and jeffing.

A wobble socket / universal joint
You’ll be lucky if there’s a straight line to your spark plug, so a universal joint will get you the angle you need to apply some torque. Again, a decent toolset will have one.

A 3/8″ drive
You could buy a specific spark plug T-bar but your home tool kit will have the drive you need to connect to your plug sockets.

A spark plug gap gauge
This nifty little tool only costs a few quid and will help you set the correct gap for your spark plug. However, modern plugs are almost all motorcycle-specific fit and so they come ‘pre-gapped’ and you won’t need to touch them. If you’re running a classic bike, you’ll probably need to set your gap and if your bike’s not running right, a gap tool can help you rule out a potential incorrect gap issue.

A torque wrench
It’s important to properly torque your spark plugs. Too tight and you’ll risk snapping it or it will be a mission to remove. Too loose and you risk an electrical short. Your owner’s manual will have the correct torque settings.

Motorcycle Spark Plug FAQ

What are the common motorcycle spark plug sizes?
Thread diameters of 10mm, 12mm, and 14mm are the most common. In fact, when it comes to motorcycles, it's rare to find any other sizes in use.

How long should a spark plug last?
Motorcycle spark plugs usually last around 16,000 miles, or at least this is when most manufacturer service schedules recommend you change them. That's typically once every other major service. However if you use Iridium spark plugs they will last a lot longer, usually well over 30,000 miles.

How do you clean motorcycle spark plugs?
Just remove the plug and use a wire brush to gently brush off any deposits on the electrode. Don't use a power tool, by hand is all that's required.

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