# NGK Spark Plugs: PWC & Jet Ski ## NGK Spark Plugs: PWC & Jet Ski 248 spark plug applications from NGK's marine catalogue, for the engines we supply parts for. Each line gives the plug NGK specifies, the iridium upgrade where one exists, and the electrode gap. **Check the gap before you fit.** Plugs are not always gapped correctly out of the box, and the wrong gap causes misfire and hard starting. Where a resistor plug is specified, fit a resistor plug — a non-resistor substitute can interfere with a tacho, sounder or engine electronics. - [Arctic Cat (Tigershark)](#arctic-cat-tigershark) - [Bombardier](#bombardier) - [Honda](#honda) - [Kawasaki](#kawasaki) - [Polaris](#polaris) - [Sea-Doo](#sea-doo) - [Suzuki](#suzuki) - [Tigershark](#tigershark) - [Yamaha](#yamaha) ### Arctic Cat (Tigershark) 20 applications Model Engine / details NGK plug Iridium upgrade Gap BARRACUDA 0.6 · 94→ BR9ES BR9EIX 0.8 mm DAYTONA 0.6 · 93→95 BR9ES BR9EIX 0.8 mm DAYTONA 0.8 · 770 · 96→96 BR9ES BR9EIX 0.8 mm DAYTONA 0.8 · 770 · 97→ BR9EYA BR9EIX 0.8 mm MONTE CARLO 0.6 · 640 · 94→96 BR9ES BR9EIX 0.8 mm MONTE CARLO 0.6 · 640 · 97→ BR9EYA BR9EIX 0.8 mm MONTE CARLO 0.8 · 770 · 96→96 BR9ES BR9EIX 0.8 mm MONTE CARLO 0.8 · 770 · 97→ BR9EYA BR9EIX 0.8 mm MONTE CARLO 0.9 · 900 · 96→ BR9ES BR9EIX 0.8 mm MONTE CARLO 1.0 · 1000 · 97→ BR9EYA BR9EIX 0.8 mm MONTEGO 0.6 · 94→96 BR9ES BR9EIX 0.8 mm MONTEGO 0.6 · 97→ BR9EYA BR9EIX 0.8 mm TIGERSHARK 0.6 · 93→97 BR9ES BR9EIX 0.8 mm TIGERSHARK 0.6 · 640 · 98→99 BR9EYA BR9EIX 0.8 mm TIGERSHARK 0.8 · 770 · 98→99 BR9EYA BR9EIX 0.8 mm TIGERSHARK 0.9 · 900 · 95→98 BR9ES BR9EIX 0.8 mm TIGERSHARK 0.9 · 900 · 99→ BR9EYA BR9EIX 0.8 mm TIGERSHARK 1.0 · 1000 · 98→ BR9EYA BR9EIX 0.8 mm TIGERSHARK 1.1 · 1100 (Excl. Li) · 99→ BR9EYA BR9EIX 0.7 mm TIGERSHARK 1.1 · 1100 Li · 99→ PZFR6H 0.7 mm ### Bombardier 31 applications Model Engine / details NGK plug Iridium upgrade Gap 5800 0.6 · 5801, 5802, 5803, 5810 · 88→ BR7ES BR7EIX 0.7 mm BARRACUDA 0.8 · Premium 6157, 6158 · 04→ BR8ES BR8EIX 0.6 mm BULLET 1.5 · 5599, 6115, 6162, 6163 · 04→ DCPR8E DCPR8EIX 0.6 mm EXP 0.6 · 93→ BR7ES BR7EIX 0.7 mm GS 0.7 · GS, GSI · 97→03 BR8ES BR8EIX 0.6 mm GS 0.8 · GSX · 96→97 BR8ES BR8EIX 0.6 mm GS 1.0 · GSX Limited · 97→03 BR8ES BR8EIX 0.6 mm GT 0.6 · GT · 91→93 BR7ES BR7EIX 0.7 mm GTI 0.7 · GTI, GTI 3 · 96→03 BR8ES BR8EIX 0.6 mm GTI 0.7 · GTI LE, STD 6133, 6134, 6135, 6136 · 04→ BR8ES BR8EIX 0.6 mm GTI 0.8 · GTI-RFI LE, STD 6137, 6138, 6139, 6140 · 04→ BR8ES BR8EIX 0.6 mm GTS 0.6 · GTS · 92→93 BR7ES BR7EIX 0.7 mm GTS 0.7 · GTS · 97→03 BR8ES BR8EIX 0.6 mm GTX 0.6 · GTX · 92→93 BR7ES BR7EIX 0.7 mm GTX 0.7 · GTX · 94→95 BR8ES BR8EIX 0.6 mm GTX 0.8 · GTX · 96→97 BR8ES BR8EIX 0.6 mm GTX 1.0 · GTX Limited · 98→03 BR8ES BR8EIX 0.6 mm GTX 4-TEC 1.5 · LTD. Supercharged 6141, 6142, 6143, · 04→ DCPR8E DCPR8EIX 0.6 mm GTX 4-TEC 1.5 · STD, Wake 6147, 6148, 61489, 6150 · 04→ DCPR8E DCPR8EIX 0.6 mm HX 0.7 · 95→03 BR8ES BR8EIX 0.6 mm SP 0.6 · 91→93 BR7ES BR7EIX 0.7 mm SP 0.8 · 97→ BR8ES BR8EIX 0.6 mm SPI 0.6 · 93→ BR7ES BR7EIX 0.7 mm SPX 0.6 · 93→93 BR7ES BR7EIX 0.7 mm SPX 0.7 · 94→97 BR8ES BR8EIX 0.6 mm SPX 0.8 · 97→ BR8ES BR8EIX 0.6 mm XP 0.6 · 91→92 BR7ES BR7EIX 0.7 mm XP 0.7 · 93→ BR8ES BR8EIX 0.6 mm XP 0.8 · 785 · 95→97 BR8ES BR8EIX 0.6 mm XP 1.0 · Limited · 98→03 BR8ES BR8EIX 0.6 mm XP 1.0 · XP-Di STD 6151, 6152 · 04→ ZFR4F-11 1.1 mm ### Honda 3 applications Model Engine / details NGK plug Iridium upgrade Gap AQUA TRAX 1.2 · F-12, F-12X · 02→ IMR9D-9H 0.9 mm AQUA TRAX 1.2 · R-12, R-12X RX1200N, T · 02→ IMR9D-9H 0.9 mm ARX 1200 1.2 · N2, N3, T2, T3 · 02→04 IMR9D-9H 0.9 mm Parts for these engines: [Honda parts](/collections/honda-marine-parts-outboard-engine-parts-components). ### Kawasaki 46 applications Model Engine / details NGK plug Iridium upgrade Gap 150 1.2 · Ultra · 04→ BR9ES BR9EIX 0.8 mm 300 0.3 · (Excl. SX) BR7ES BR7EIX 0.8 mm 300 0.3 · SX B7ES BR7EIX 0.8 mm 650 0.7 · SC, SX BR7ES BR7EIX 0.8 mm 650 0.7 · TS, X-2 BR7ES BR7EIX 0.8 mm 750 0.8 · FX BR8ES BR8EIX 0.8 mm 750 0.8 · SS, SX, Xi BR8ES BR8EIX 0.8 mm 750 0.8 · STS, SXi JT750B1 BR8ES BR8EIX 0.8 mm 750 0.8 · X4, XII, ZXI JH750C, E, F BR8ES BR8EIX 0.7 mm 900 0.9 · ZXI JH900A BR9ES BR9EIX 0.7 mm 1100 1.1 · STX, SXI · 98→ BR9ES BR9EIX 0.8 mm 1100 1.1 · STX JT1100A BR9ES BR9EIX 0.7 mm 1100 1.1 · ZXI JH1100A BR9ES BR9EIX 0.7 mm JB 0.7 · 650 Jet Mate · 89→92 BR7ES BR7EIX 0.8 mm JF 0.7 · 650 AX-2, 650 B TS · 86→96 BR7ES BR7EIX 0.8 mm JH 0.8 · 750 A Super Sport, B Xi (Excl. XiR) · 92→95 BR8ES BR8EIX 0.8 mm JH 0.8 · D XiR · 94→95 BR8ES BR8EIX 0.7 mm JH 0.8 · 750 E Super Sport, G · 96→ BR8ES BR8EIX 0.8 mm JH 1.1 · JH 1100-A · 98→00 BR9ES BR9EIX 0.8 mm JH 1.1 · Ultra 130 DI JH 1100-B · 01→04 PZFR7G-G 0.8 mm JH 1.2 · Ultra 150 JH 1200 · 99→00 R6918C-9 0.6 mm JH 1.2 · Ultra 150 JH 1200 · 00→ BR9ES BR9EIX 0.8 mm JS 0.4 · 400A · 75→78 B7ES BR7EIX 0.8 mm JS 0.4 · 440A, 440SX · 78→92 BR7ES BR7EIX 0.8 mm JS 0.6 · 550A · 82→85 BR7ES BR7EIX 0.8 mm JS 0.6 · 550B, 550SX · 86→95 BR8ES BR8EIX 0.8 mm JS 0.8 · 750 A · 92→94 BR8ES BR8EIX 0.8 mm JS 0.8 · 750 C SXI · 98→ BR8ES BR8EIX 0.8 mm JS 0.8 · 750 SX, SXI JS750A, B BR8ES BR8EIX 0.7 mm JS 0.8 · 800 SX-R JS800A · 03→ BR9ES BR9EIX 0.8 mm JT 0.8 · SXi Pro JT750C · 98→ BR8ES BR8EIX 0.8 mm JT 0.9 · STS JT900B · 01→02 BR9ES BR9EIX 0.8 mm JT 0.9 · STX JT900, C, D, E · 98→06 BR9ES BR9EIX 0.8 mm JT 1.1 · JT 1100-B (Excl. STX) · 98→99 BR9ES BR9EIX 0.8 mm JT 1.1 · STX, STX DI JT 1100-C, F, G · 00→ PZFR7G-G 0.8 mm JT 1.2 · STX-R, Ultra 150 JT 1200-A, B, C · 00→06 BR9ES BR9EIX 0.8 mm JT 1.2 · STX-12F JT 1200-B · 03→07 CR9EK CR9EIX 0.6 mm JT 1.5 · STX-15F, Ultra 250X JT 1500-A, B · 04→06 CR9EK CR9EIX 0.6 mm JT 1.5 · Ultra LX JT 1500 C · 06→07 CR9EKB CR9EIX 0.8 mm JT 1.5 · Ultra Jet 250X JT 1500 B · 08→09 PMR9B CR9EIX 0.7 mm JT 1.5 · Ultra 260X, 300LX, 310LX · 09→ PMR9B CR9EIX 0.7 mm STX 1.1 · 1100 Di · 02→ BR9ES BR9EIX 0.8 mm STX 1.1 · 1100 Di C1, F1 · 00→ PZFR7G-G 0.8 mm STX 1.2 · 1200, R (Excl. F) Dia. 14 mm plug · 00→04 BR9ES BR9EIX 0.8 mm STX 1.2 · 1200 12F, F Dia. 10 mm plug · 03→07 CR9EK CR9EIX 0.6 mm STX 1.5 · 1500 F · 04→ CR9EK CR9EIX 0.6 mm ### Polaris 28 applications Model Engine / details NGK plug Iridium upgrade Gap DELUX 0.7 · 97→ BPR6ES BPR6EIX 0.8 mm GENESIS 1.2 · 1165 · (Excl. Inj.) · 99→00 BR9ES BR9EIX 0.8 mm GENESIS 1.2 · 1165 Inj., 1200 Inj. · 00→ PZFR6H 0.8 mm HURRICANE 0.7 · 96→97 BPR8ES BPR8EIX 0.7 mm MSX 0.8 · 110, 150 · 04→ BKR7E BKR7EIX 0.8 mm PRO 1165 1.2 · 00→ BR9ES BR9EIX 0.8 mm SL 0.7 · 94→95 BPR7ES BPR7EIX 0.7 mm SL 0.7 · 700 · 96→97 BPR7ES BPR7EIX 0.7 mm SL 0.8 · 750 · 94→95 BPR7ES BPR7EIX 0.7 mm SL 0.8 · 780 · 96→97 BPR8ES BPR8EIX 0.7 mm SL 0.9 · 900 · 96→97 BPR8ES BPR8EIX 0.7 mm SLR 0.7 · 700 · 96→97 BPR7ES BPR7EIX 0.7 mm SLT 0.7 · 700 · 96→97 BPR7ES BPR7EIX 0.7 mm SLT 0.8 · 750 · 95→ BPR7ES BPR7EIX 0.7 mm SLT 0.8 · 780 · 96→97 BPR8ES BPR8EIX 0.7 mm SLT 1.1 · 1050 · 96→97 BPR8ES BPR8EIX 0.7 mm SLTX 1.1 · 1050 · 96→97 BPR8ES BPR8EIX 0.7 mm SLTX 1.1 · W 105 TCSP 04 · 98→ BR9ES BR9EIX 0.8 mm SLTX 1.1 · 1051 · 99→ BPR8ES BPR8EIX 0.7 mm SLX 0.8 · 780 · 96→97 BPR8ES BPR8EIX 0.7 mm SLX 0.8 · EC78PWE 04 Pro785 · 98→ BR9ES BR9EIX 0.8 mm SLX 0.8 · EC78ZPWE 04 · 98→ BR9ES BR9EIX 0.8 mm SLX 1.1 · 1051 · 99→ BPR8ES BPR8EIX 0.7 mm SLX 1.2 · 1165 · 00→ BR9ES BR9EIX 0.8 mm SLXH 1.1 · W 9105 TCSP 05 · 98→ BR9ES BR9EIX 0.8 mm VIRAGE 1.2 · 1165 · (Excl. Inj.) · 00→ BR9ES BR9EIX 0.8 mm VIRAGE 1.2 · 1165 Inj. · 01→ PZFR6H 0.8 mm X45 1.2 · 1165 · 99→ BR9ES BR9EIX 0.8 mm ### Sea-Doo 36 applications Model Engine / details NGK plug Iridium upgrade Gap 5800 0.6 · 5801, 5802, 5803, 5810 · 88→95 BR7ES BR7EIX 0.6 mm BARRACUDA 0.8 · Premium · 04→ BR8ES BR8EIX 0.8 mm BULLET 1.5 · 04→ DCPR8E DCPR8EIX 0.8 mm EXP 0.6 · 93→ BR7ES BR7EIX 0.6 mm GS 0.7 · 718 Incl. GSi · 97→99 BR8ES BR8EIX 0.8 mm GSX 0.8 · 782 · 96→98 BR8ES BR8EIX 0.8 mm GSX 1.0 · 951 Limited · 97→98 BR8ES BR8EIX 0.8 mm GT 0.6 · 91→ BR7ES BR7EIX 0.6 mm GTI 0.7 · 718, LE, STD · 96→ BR8ES BR8EIX 0.8 mm GTI 0.8 · LE RFI · 04→ BR8ES BR8EIX 0.8 mm GTS 0.6 · 92→97 BR7ES BR7EIX 0.6 mm GTS 0.7 · 718 · 97→ BR8ES BR8EIX 0.8 mm GTX 0.6 · 92→93 BR7ES BR7EIX 0.6 mm GTX 0.7 · 650 · 94→95 BR8ES BR8EIX 0.8 mm GTX 0.8 · 782 · 96→98 BR8ES BR8EIX 0.8 mm GTX 0.9 · 947 Di · 00→ ZFR5F ZFR5FIX-11 0.8 mm GTX 1.0 · 951 Di · 00→03 ZFR4F-11 1.1 mm GTX 1.5 · 4-Tec LTD, Supercharged · 04→ DCPR8E DCPR8EIX 0.8 mm HX 0.7 · 718 · 95→96 BR8ES BR8EIX 0.8 mm LRV 1.0 · 951 BR8ES BR8EIX 0.8 mm RX 0.9 · 947 · 00→ ZFR5F ZFR5FIX-11 0.8 mm RX 1.0 · 951 Di · 01→02 ZFR5F ZFR5FIX-11 0.8 mm RX 1.0 · 951 Di · 03→ ZFR4F-11 1.1 mm SP 0.6 · 91→97 BR7ES BR7EIX 0.6 mm SP 0.8 · 782 · 97→ BR8ES BR8EIX 0.8 mm SPI 0.6 · 93→97 BR7ES BR7EIX 0.6 mm SPX 0.6 · 93→ BR7ES BR7EIX 0.6 mm SPX 0.7 · 650 · 94→95 BR8ES BR8EIX 0.8 mm SPX 0.7 · 718 · 96→97 BR8ES BR8EIX 0.8 mm SPX 0.8 · 782 · 97→98 BR8ES BR8EIX 0.8 mm XP 0.6 · 91→93 BR7ES BR7EIX 0.6 mm XP 0.7 · 650 · 93→95 BR8ES BR8EIX 0.8 mm XP 0.7 · 718 · 95→ BR8ES BR8EIX 0.8 mm XP 0.8 · 782 · 95→97 BR8ES BR8EIX 0.8 mm XP 1.0 · 951 (Excl. LTD Di) · 96→03 BR8ES BR8EIX 0.8 mm XP 1.0 · 951 LTD Di · 04→ ZFR4F-11 1.1 mm ### Suzuki 33 applications Model Engine / details NGK plug Iridium upgrade Gap C340 0.3 BR9EYA BR9EIX 0.8 mm C370 0.4 BR9EYA BR9EIX 0.8 mm C440 0.4 BR9EYA BR9EIX 0.8 mm C-LWS 0.4 · 440 BR9EYA BR9EIX 0.8 mm C-ZRV 0.4 · 440 · 00→ BR9EYA BR9EIX 0.8 mm F340 0.3 BR9EYA BR9EIX 0.8 mm F370 0.4 BR9EYA BR9EIX 0.8 mm F440 0.4 BR9EYA BR9EIX 0.8 mm F / C 0.4 · F / C-C 440 BR9ES BR9EIX 0.8 mm F / C 0.5 · F / C 500 BR9ES BR9EIX 0.8 mm F / C 0.7 · F / C 700 · →95 BR9ES BR9EIX 0.8 mm L440 0.4 BR9EYA BR9EIX 0.8 mm L / C 0.4 · L / C-ZRV 440 · 98→00 BR10ES BR10EIX 0.7 mm L / C 0.5 · L / C 500 · →99 BR9EYA BR9EIX 0.8 mm L / C 0.5 · L / C 500 · 00→ BR10ES BR10EIX 0.8 mm L / C 0.5 · L / C-EID 500 BR9EYA BR9EIX 0.8 mm L / C 0.5 · L / C 530 BR10ES BR10EIX 0.7 mm L / C 0.6 · L / C 550 BR9EYA BR9EIX 0.8 mm L / C 0.6 · L / C-EID 580 BR9EYA BR9EIX 0.8 mm L / C 0.6 · L / C 600, L / C-EID 600 BR9EYA BR9EIX 0.8 mm L / C 0.7 · L / C 650, L / C 700 BR10ES BR10EIX 0.7 mm L / C 0.8 · L / C 785 BR9EYA BR9EIX 0.8 mm L / C 0.8 · L / C 800 BR9EYA BR9EIX 0.8 mm L / C 0.9 · L / C 900 BR9EYA BR9EIX 0.8 mm L / C 1.0 · L / C 1000 BR9EYA BR9EIX 0.8 mm NOMAD 0.3 · 292 B7HS BR7HIX 0.7 mm NOMAD 0.3 · 336 B7HS BR7HIX 0.7 mm SM 0.4 · SM10, SM10D B7HS BR7HIX 0.7 mm SM 0.4 · SM20 (Excl. Hop Up Kit) B7HS BR7HIX 0.7 mm SM 0.4 · SM20 Hop Up Kit B8ES BR8EIX 0.7 mm SM 0.4 · SM 440M BR9EIX 0.8 mm XR 0.4 · XR400 B7HS BR7HIX 0.7 mm XR 0.4 · XR440 B7HS BR7HIX 0.7 mm Parts for these engines: [Suzuki parts](/collections/suzuki-marine-parts-outboard-engine-parts-components). ### Tigershark 5 applications Model Engine / details NGK plug Iridium upgrade Gap 639 0.6 · 93→97 B9ES BR9EIX 0.6 mm 644 0.6 · 93→94 B9ES BR9EIX 0.6 mm 768 0.8 · 97→ B9ES BR9EIX 0.6 mm 896 0.9 · 95→97 B9ES BR9EIX 0.6 mm 999 1.0 · 97→ B9ES BR9EIX 0.6 mm ### Yamaha 46 applications Model Engine / details NGK plug Iridium upgrade Gap EX 1.0 · Deluxe, EXR, Sport · 17→ CR9EB CR9EIX 0.7 mm FX 0.1 · 140 F1B · 02→ CR9EB CR9EIX 0.7 mm FX 0.7 · FX1 FX 700 · 94→95 B8HS BR8HIX 0.6 mm FX 1.0 · 1000 · 03→ CR9EB CR9EIX 0.7 mm FX 1.1 · 160 · 04→ CR9EB CR9EIX 0.7 mm FX 1.1 · 1100, Cruiser, G, LG FX · 05→ CR9EB CR9EIX 0.7 mm FX 1.8 · Cruiser High Output, SHO FX1800A LFR6A ILFR6B 0.9 mm GP 0.8 · 760, Wave Runner · 97→99 BR8HS BR8HIX 0.6 mm GP 0.8 · 800 Waverunner 19 mm reach plugs · 98→ BR9ES BR9EIX 0.6 mm GP 1.2 · 1200 Wave Runner · 97→00 BR8HS BR8HIX 0.6 mm GP 1.2 · 1200 19 mm reach plugs · 03→ BR8ES-11 BR8EIX 1.1 mm GP 1.3 · R 1300 · 03→ BR8ES-11 BR8EIX 1.1 mm MJ 0.7 · 650, T 650, TX 650 · 89→95 BR8HS BR8HIX 0.6 mm MJ 0.7 · TL 700, TX 700 · 93→96 BR8HS BR8HIX 0.6 mm RA 0.7 · 700 · 94→ BR8HS BR8HIX 0.6 mm RA 0.8 · 760, Wave Raider · 96→99 BR8HS BR8HIX 0.6 mm RA 1.1 · 1100 · 95→97 BR8HS BR8HIX 0.6 mm SJ 0.7 · 650 Super Jet · 90→94 B8HS BR8HIX 0.6 mm SJ 0.7 · 700 Super Jet · 94→95 B8HS BR8HIX 0.6 mm SJ 0.7 · A 700 · 96→97 BR8HS BR8HIX 0.6 mm SJ 0.7 · 700 Super Jet · 98→ BR7HS BR7HIX 0.6 mm VN 0.7 · 700 · 95→ BR8HS BR8HIX 0.6 mm VX 1.1 · 1100 Cruiser, VX Deluxe, VX Sport AGW, · 08→ CR9EB CR9EIX 0.7 mm VX 1.1 · 1100 Deluxe, G, Sport · 05→ CR9EB CR9EIX 0.7 mm VX 1.8 · Cruiser HO · 16→ LFR6A ILFR6B 0.9 mm VX 1.8 · VXR · 11→ LFR6A ILFR6B 0.9 mm WAR 0.7 · 700 · 95→96 BR8HS BR8HIX 0.6 mm WB 0.7 · 700 · 93→96 B8HS BR8HIX 0.6 mm WB 0.7 · A 700 · 96→99 BR8HS BR8HIX 0.6 mm WB 0.8 · 760 Wave Blaster II · 96→98 BR8HS BR8HIX 0.6 mm WB 0.8 · 800 19 mm reach plugs · 99→02 BR8ES BR8EIX 0.6 mm WJ 0.5 · 500 · 87→90 B7HS BR7HIX 0.6 mm WR 0.5 · WR 500 · 87→94 B7HS BR7HIX 0.6 mm WR 0.7 · WR 650, WRA 650, WRB 650 · 90→96 BR8HS BR8HIX 0.6 mm WR 0.7 · WRA 700, WRB 700 · 93→97 BR8HS BR8HIX 0.6 mm WVT 0.7 · 700 · 95→ BR8HS BR8HIX 0.6 mm WVT 0.8 · 760 Wave Venture · 97→ BR8HS BR8HIX 0.6 mm WVT 1.1 · 1100 Wave Venture · 96→98 BR8HS BR8HIX 0.6 mm XA 0.8 · 800 · 04→ BR8ES BR8EIX 0.6 mm XL 0.7 · 700 · 99→ BR8HS BR8HIX 0.6 mm XL 0.8 · 760 Waverunner 12.7 mm reach plugs · 98→99 BR8HS BR8HIX 0.6 mm XL 0.8 · 800 19 mm reach plugs · 00→ BR9ES BR9EIX 0.8 mm XL 1.2 · 122 Waverunner 12.7 mm reach plugs · 98→99 BR8HS BR8HIX 0.6 mm XL 1.2 · 1200 19 mm reach plugs · 99→01 BR8ES-11 BR8EIX 1.1 mm XLT 0.8 · 800 · 02→ BR8ES BR8EIX 0.6 mm XLT 1.2 · 1200 · 01→ BR8ES-11 BR8EIX 1.1 mm Parts for these engines: [Yamaha parts](/collections/yamaha-marine-parts-outboard-engine-parts-components). ### Reading the plug codes An NGK code describes the plug's construction. The digit in the middle is the heat rating — a **higher number is a colder plug**, which is the opposite of most other brands. An **R** after the first letters means a resistor plug. Codes ending **IX** are the Iridium IX range, a direct upgrade with a finer centre electrode. A **Y-** prefix is a diesel glow plug, not a spark plug, and has no gap. Do not substitute a hotter or colder plug to cure a running problem. A plug reading the wrong colour is telling you about the fuel, ignition or oil — changing heat range hides it rather than fixing it. ### Other engines - [Mercury](/pages/ngk-spark-plugs-mercury-outboards) - [Mariner / Force](/pages/ngk-spark-plugs-mariner-force-outboards) - [Yamaha](/pages/ngk-spark-plugs-yamaha-outboards) - [Suzuki](/pages/ngk-spark-plugs-suzuki-outboards) - [Johnson](/pages/ngk-spark-plugs-johnson-outboards) - [Evinrude / OMC](/pages/ngk-spark-plugs-evinrude-omc-outboards) - [Tohatsu / Nissan](/pages/ngk-spark-plugs-tohatsu-nissan-outboards) - [Honda / Volvo Penta / others](/pages/ngk-spark-plugs-honda-volvo-penta-outboards) - [MerCruiser inboard](/pages/ngk-spark-plugs-mercruiser-inboard) - [Other inboards](/pages/ngk-spark-plugs-inboard-sterndrive) ### Not sure which plug you need? Model families ran across several specifications and the year or serial usually decides which line applies. Ring [0412 532 984](tel:+61412532984) with your engine and serial number and we will confirm the plug, the gap and how many you need. Our other workshop charts are on the [reference charts page](/pages/resources), and the how-and-why lives in our [boat maintenance guides](/blogs/guides). Applications compiled from NGK's published marine application guide and reproduced here as reference data. NGK's own guide is the authority; always confirm against your engine's manual. Listings do not apply to racing or modified engines. --- > Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/pages/ngk-spark-plugs-pwc-jet-ski)