NGK Spark Plugs: Johnson Outboards

NGK Spark Plugs: Johnson Outboards

271 spark plug applications from NGK's catalogue, for the marine engines we supply parts for. Each line gives the plug NGK specifies, the premium upgrade where one exists, and the electrode gap. Plug codes shown as links go straight to that plug on our shop.

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.

Johnson 263 applications

Model Engine / details NGK plug Premium upgrade Gap
1 HP 1 · 1R Standard Ign. · 68→70 B6S 0.8 mm
1.1 HP 1.1 · 46→47 B-4L 0.8 mm
1.2 HP 1.2 · Magneto · 86→90 B6S 0.8 mm
1.5 HP 1.5 · Standard Ign. · 68→70 B6S 0.8 mm
2 HP 2 · 1-Cyl. · 91→01 BPR6HS BPR6HIX 0.8 mm
2 HP 2 · 2R Standard Ign. · 68→84 B6S 0.8 mm
2 HP 2 · Aquanaut Diving unit Standard Ign. · 66→70 BM4A 0.8 mm
2 HP 2 · Colt, Jr · 71→90 B6S 0.8 mm
2 HP 2 · Excel 4, Ultra · 87→88 B7HS BR7HIX 0.8 mm
2.3 HP 2.3 · 1-Cyl. · 91→98 BPR6HS BPR6HIX 0.8 mm
2.5 HP 2.5 · 87→88 BR6HS BR6HIX 0.8 mm
3 HP 3 · 2-Cyl. · 89→97 BR6HS BR6HIX 0.8 mm
3 HP 3 · Lightwin Standard Ign. · 52→74 B6S 0.8 mm
3.3 HP 3.3 · 1-Cyl. · 91→03 BPR6HS BPR6HIX 0.8 mm
3.3 HP 3.3 · Standard Ign. · 48→51 B6S 0.8 mm
3.5 HP 3.5 · 01→02 BPR6HS BPR6HIX 0.8 mm
3.5 HP 3.5 · 04→05 BP7HS BPR7HIX 0.5 mm
4 HP 4 · 12.7 mm reach plugs · 2-Cyl. · 89→03 BR6HS BR6HIX 0.8 mm
4 HP 4 · 12.7 mm reach plugs · 77→87 BR6HS BR6HIX 0.8 mm
4 HP 4 · 19 mm reach plugs · 04→05 BPR6ES BPR6EIX 0.9 mm
4 HP 4 · Excel, Ultra 12.7 mm reach plugs · 87→88 BZ7HS-10 0.8 mm
4 HP 4 · Incl. 4R, 4W Standard Ign. · 69→76 B6S 0.8 mm
4 HP 4 · V4, V4A, V4M, V4S, VX, VXH Standard · 58→67 B6S 0.8 mm
4.5 HP 4.5 · 80→85 BR6HS BR6HIX 0.8 mm
5 HP 5 · 19 mm reach plugs · 04→05 BPR6ES BPR6EIX 0.9 mm
5 HP 5 · 90→97 BR6HS BR6HIX 0.8 mm
5 HP 5 · Angler · 65→68 B6S 0.8 mm
5 HP 5 · Dia. 12 mm plug · 4-Stroke · 97→03 D6HA 0.7 mm
5 HP 5 · Dia. 14 mm plug · 1-Cyl. · 98→01 BZ7HS-10 0.8 mm
5.2 HP 5.2 · Lightwin · 52→74 B6S 0.8 mm
5.5 HP 5.5 · Standard Ign. · 56→64 B6S 0.8 mm
6 HP 6 · 19 mm reach plugs · 05→ BPR6ES BPR6EIX 0.9 mm
6 HP 6 · Dia. 12 mm, 12.7 mm reach plugs · 4-Stroke · 97→03 D6HA 0.7 mm
6 HP 6 · Dia. 14 mm, 12.7 mm reach plugs · 2-Stroke · 77→01 BR6HS BR6HIX 0.8 mm
6 HP 6 · Incl. 6R, 6RL Standard Ign. · 65→76 B6S 0.8 mm
6 HP 6 · RLSRS, RSRS 12.7 mm reach plugs · 04→ BR6HS BR6HIX 0.8 mm
6.5 HP 6.5 · COM · 81→93 BR6HS BR6HIX 0.8 mm
7.5 HP 7.5 · 77→97 BR6HS BR6HIX 0.8 mm
7.5 HP 7.5 · Standard Ign. · 52→58 B6S 0.8 mm
8 HP 8 · Dia. 12 mm plug · 4-Stroke 211cc · 96→03 D6HA 0.7 mm
8 HP 8 · Dia. 12 mm plug · 4-Stroke SOHC · 02→ DR5HS 0.7 mm
8 HP 8 · Incl. COM Dia. 14 mm plug · 2-Stroke · 77→01 BR6HS BR6HIX 0.8 mm
8 HP 8 · Incl. RLSRC, RSRC Dia. 14 mm plug · 04→ BR6HS BR6HIX 0.8 mm
9 HP 9 · 9R, 9RL, 9EL Standard Ign. · 74→ BZ7HS-10 0.8 mm
9.5 HP 9.5 · Standard Ign. · 52→73 B6S 0.8 mm
9.7 HP 9.7 · Standard Ign. · 42→49 AB-6 0.8 mm
9.9 HP 9.9 · 2-Stroke OHC · 77→01 BR7HS BR7HIX 0.8 mm
9.9 HP 9.9 · 2-Stroke SOHC · 02→04 DCPR7E DCPR7EIX 0.8 mm
9.9 HP 9.9 · 4-Stroke OHC 302cc · 02→04 DCPR7E DCPR7EIX 0.8 mm
9.9 HP 9.9 · 74→76 B7HS BR7HIX 0.8 mm
10 HP 10 · 10E, 10EL, 10R, 10RL Standard Ign. · 75→76 BZ7HS-10 0.8 mm
10 HP 10 · BL4STC, BL4STS Dia. 12 mm plug · 03→ DCPR6E 0.9 mm
10 HP 10 · COM · 92→93 BZ7HS-10 0.8 mm
10 HP 10 · COM · 94→02 BR7HS BR7HIX 0.8 mm
10 HP 10 · EL4SOR · 05→ BKR6ES BKR6EIX 0.8 mm
10 HP 10 · EL4SRC Dia. 12 mm plug · 03→ DCPR6E 0.9 mm
10 HP 10 · L4SOA Dia. 14 mm, 19 mm reach plugs · 05→ BKR6ES BKR6EIX 0.8 mm
10 HP 10 · L4STC, LE4STS Dia. 12 mm plug · 03→ DCPR6E 0.9 mm
10 HP 10 · R4SOA Dia. 14 mm, 19 mm reach plugs · 05→ BKR6ES BKR6EIX 0.8 mm
10 HP 10 · R4SR, R4STC, RBL4SR, RE4SR, · 03→ DCPR6E 0.9 mm
10 HP 10 · RHLSOR, RHLSRC, RHLSTS · 03→ BR7HS BR7HIX 0.8 mm
10 HP 10 · RHSOR, RHSRC, RHSTS · 03→ BR7HS BR7HIX 0.8 mm
10 HP 10 · RL4SR Dia. 12 mm plug · 03→ DCPR6E 0.9 mm
10 HP 10 · RLSOS, RLSRD, RLSTE · 03→ BR7HS BR7HIX 0.8 mm
10 HP 10 · RSOS, RSRD, RSTE · 03→ BR7HS BR7HIX 0.8 mm
10 HP 10 · Standard Ign. · 52→63 B6S 0.8 mm
10 HP 10 · TBL4SOB, TE4SOA, TEL4SOA · 05→ BKR6ES BKR6EIX 0.8 mm
10 HP 10 · TEL4SR, TEL4STC Dia. 12 mm plug · 03→ DCPR6E 0.9 mm
14 HP 14 · Fastwin · 50→72 B6S 0.8 mm
14 HP 14 · Incl. COM · 81→91 BZ7HS-10 0.8 mm
15 HP 15 · 15E, 15EL, 15R, 15RL, COM · 74→93 BZ7HS-10 0.8 mm
15 HP 15 · 9.5 mm reach plugs · 56→71 B6S 0.8 mm
15 HP 15 · Dia. 12 mm plug · 4-Stroke OHC · 95→03 DCPR7E DCPR7EIX 0.8 mm
15 HP 15 · Dia. 14 mm, 19 mm reach plugs · 05→ BKR6ES BKR6EIX 0.8 mm
15 HP 15 · Incl. COM Dia. 14 mm plug · 2-Stroke · 94→01 BR7HS BR7HIX 0.8 mm
15 HP 15 · L4SR, R4SR, TE4SR, TEL4SR · 04→ DCPR6E 0.9 mm
15 HP 15 · LSRS, RSRS, WRLSRM, WRSRM · 04→ BR7HS BR7HIX 0.8 mm
15 HP 15 · Standard Ign. · 54→56 BR6S 0.8 mm
18 HP 18 · (Excl. Fastwin) Standard Ign. · 57→73 BR6S 0.8 mm
18 HP 18 · Jet · 2-Cyl. · 95→98 BR7HS BR7HIX 0.8 mm
20 HP 20 · 2-Cyl. · 78→98 BR7HS BR7HIX 0.8 mm
20 HP 20 · 20R, 20RL, 25R, 25RL Standard Ign. · 66→78 B6S 0.8 mm
20 HP 20 · Jet · 2-Cyl. · 99→01 BR7HS BR7HIX 0.8 mm
25 HP 25 · (Excl. COM) · 2-Cyl. · 77→02 BR7HS BR7HIX 0.8 mm
25 HP 25 · 03→05 BZ7HS-10 0.8 mm
25 HP 25 · 3-Cyl. · 95→01 BR6HS BR6HIX 0.8 mm
25 HP 25 · Incl. 20R, 25E, 25EL, 25R, 25RL · 52→76 B6S 0.8 mm
28 HP 28 · Jet · 92→03 BPZ8HS-10 0.8 mm
28 HP 28 · SPL (Excl. Jet) · 2-Cyl. · 78→97 BR7HS BR7HIX 0.8 mm
28 HP 28 · Standard Ign. · 62→64 B6S 0.8 mm
30 HP 30 · (Excl. Jet) · 2-Cyl. · 78→02 BR7HS BR7HIX 0.8 mm
30 HP 30 · 04→05 BZ7HS-10 0.8 mm
30 HP 30 · 4-Stroke OHC · 95→03 DCPR7E DCPR7EIX 0.8 mm
30 HP 30 · Jet · 2-Cyl. · 99→01 BPR7HS BPR7HIX 0.8 mm
30 HP 30 · Standard Ign. · 56→71 BR6S 0.8 mm
33 HP 33 · Standard Ign. · 69→70 B6S 0.8 mm
35 HP 35 · 3-Cyl. · 95→01 BR7HS BR7HIX 0.8 mm
35 HP 35 · E, EL, R, RL (Excl. Jet) Standard Ign. · 2-Cyl. · 77→97 BZ7HS-10 0.8 mm
35 HP 35 · Jet · 2-Cyl. · 93→03 BPZ8HS-10 0.8 mm
35 HP 35 · Standard Ign. · 57→70 B6S 0.8 mm
40 HP 40 · (Excl. COM) · 2-Cyl. · 80→88 BZ7HS-10 0.8 mm
40 HP 40 · (Excl. COM) · 2-Cyl. · 89→02 BPZ8HS-10 0.8 mm
40 HP 40 · 40E, 40EL, 40R, 40RL Standard Ign. · 74→76 BZ7HS-10 0.8 mm
40 HP 40 · 40ES Standard Ign. · 69→71 BR6S 0.8 mm
40 HP 40 · COM · 43 cu.inch · 81→90 B7HS BR7HIX 0.8 mm
40 HP 40 · Dia. 12 mm plug · 4-Stroke DOHC · 02→03 DCPR7E DCPR7EIX 0.8 mm
40 HP 40 · Incl. 40E, 40EL, 40R, 40RL (Excl. 40ES) · 60→73 B6S 0.8 mm
40 HP 40 · Jet · 3-Cyl. · 99→01 BPR7HS BPR7HIX 0.8 mm
40 HP 40 · PL4SRM, PL4SRS Dia. 12 mm plug · 04→ DCPR6E 0.9 mm
40 HP 40 · PLSRS, RLSRS, RSRS Dia. 14 mm plug · 04→ BZ7HS-10 0.8 mm
48 HP 48 · 2-Cyl. · 80→88 BZ7HS-10 0.8 mm
48 HP 48 · Incl. SPL · 2-Cyl. · 89→97 BPZ8HS-10 0.8 mm
50 HP 50 · 05→ DCPR6E 0.9 mm
50 HP 50 · 2-Cyl. · 80→88 BZ7HS-10 0.8 mm
50 HP 50 · 2-Cyl. · 89→97 BPZ8HS-10 0.8 mm
50 HP 50 · 2-Cyl. · 98→ BPR7HS BPR7HIX 0.8 mm
50 HP 50 · 3-Cyl. 815cc · 02→04 DCPR7E DCPR7EIX 0.7 mm
50 HP 50 · 3-Cyl. · 95→98 BPZ8HS-10 0.8 mm
50 HP 50 · PL4SRM, PL4SRS, PL4STC · 03→ DCPR6E 0.9 mm
50 HP 50 · PLSRS, PLSTD Dia. 14 mm plug · 03→ BZ7HS-10 0.8 mm
50 HP 50 · Sizzler · 71→75 B7HS BR7HIX 0.8 mm
50 HP 50 · Standard Ign. · 58→59 B6S 0.8 mm
55 HP 55 · 2-Cyl. · 76→89 B7HS BR7HIX 0.8 mm
55 HP 55 · 3-Cyl. · 68→69 BZ7HS-10 0.8 mm
55 HP 55 · COM · 2-Cyl. · 94→95 BPZ8HS-10 0.8 mm
60 HP 60 · 2-Cyl. · 80→85 BZ7HS-10 0.8 mm
60 HP 60 · 3-Cyl. 49, 56 cu.inch · 75→93 BZ7HS-10 0.8 mm
60 HP 60 · 3-Cyl. 56 cu.inch · 94→98 BPZ8HS-10 0.8 mm
60 HP 60 · 4-Stroke OHC · 02→05 BPR6ES BPR6EIX 0.9 mm
60 HP 60 · 99→01 BZ7HS-10 0.8 mm
60 HP 60 · Standard Ign. · V4 · 64→67 B6S 0.8 mm
65 HP 65 · 3-Cyl. · 72→73 BZ7HS-10 0.8 mm
65 HP 65 · COM HC LC · 84→87 BZ7HS-10 0.8 mm
65 HP 65 · COM · 3-Cyl. · 94→95 BPZ8HS-10 0.8 mm
65 HP 65 · Jet CV4 · 92→97 BR7HS BR7HIX 0.8 mm
65 HP 65 · Sportfour · V4 · 68→ BZ7HS-10 0.8 mm
70 HP 70 · 02→05 BPR6ES BPR6EIX 0.9 mm
70 HP 70 · 3-Cyl. 49, 56 cu.inch · 75→93 BZ7HS-10 0.8 mm
70 HP 70 · 3-Cyl. 56 cu.inch · 94→01 BPZ8HS-10 0.8 mm
75 HP 75 · 75→89 BZ7HS-10 0.8 mm
75 HP 75 · Standard Ign. · V4 · 60→65 B6S 0.8 mm
80 HP 80 · (Excl. Starfire) Standard Ign. · 66→67 B6S 0.8 mm
80 HP 80 · Jet CV4 · 79→01 BR7HS BR7HIX 0.8 mm
80 HP 80 · Starfire · 66→67 B8S 0.8 mm
85 HP 85 · (Excl. CV4) · 86→93 BZ7HS-10 0.8 mm
85 HP 85 · 68→80 B7HS BR7HIX 0.8 mm
85 HP 85 · Backtroller · V4 · 94→95 BR7HS BR7HIX 0.8 mm
85 HP 85 · CV4 SPL · 79→97 BR7HS BR7HIX 0.8 mm
90 HP 90 · Carb. · 01→02 BZ7HS-10 0.8 mm
90 HP 90 · CV4 Incl. Turbojet · 79→98 BR7HS BR7HIX 0.8 mm
90 HP 90 · GLSOB 19 mm reach plugs · 05→ BKR6ES BKR6EIX 0.8 mm
90 HP 90 · GLSRM, GLSTA 12.7 mm reach plugs · 03→ BZ7HS-10 0.8 mm
90 HP 90 · LV4 (Excl. F.F.I.) · 95→00 BPZ8HS-10 0.8 mm
90 HP 90 · LV4 F.F.I. · 98→ PZFR6H 0.8 mm
90 HP 90 · PL4SOR, PLSOA, PLSRR, PLSTC · 03→ BZ7HS-10 0.8 mm
90 HP 90 · PL4SRC, PL4STC 19 mm reach plugs · 03→ BKR6ES BKR6EIX 0.8 mm
90 HP 90 · PX4SOR, PX4SRC, PX4STC · 03→ BKR6ES BKR6EIX 0.8 mm
90 HP 90 · PXSOC, PXSRS 12.7 mm reach plugs · 04→ BZ7HS-10 0.8 mm
90 HP 90 · Standard Ign. · 64→65 B6S 0.8 mm
100 HP 100 · (Excl. Starfire) Standard Ign. · 66→72 B6S 0.8 mm
100 HP 100 · Starfire · 67→72 B7HS BR7HIX 0.8 mm
100 HP 100 · V4 · 79→80 B7HS BR7HIX 0.8 mm
105 HP 105 · COM LV4, LV6 Jet · 93→03 BPZ8HS-10 0.8 mm
110 HP 110 · CV4 · 79→97 BR7HS BR7HIX 0.8 mm
112 HP 112 · CV4 · 79→97 BR7HS BR7HIX 0.8 mm
115 HP 115 · (Excl. COM) · 73→79 BZ7HS-10 0.8 mm
115 HP 115 · 5X4SRC 19 mm reach plugs · 04→ BKR6ES BKR6EIX 0.8 mm
115 HP 115 · 69→70 B7HS BR7HIX 0.8 mm
115 HP 115 · COM · 75→84 B7HS BR7HIX 0.8 mm
115 HP 115 · CV4 Incl. Turbojet · 79→98 BR7HS BR7HIX 0.8 mm
115 HP 115 · Fast Strike LV4 (Excl. F.F.I.) · 95→02 BPZ8HS-10 0.8 mm
115 HP 115 · GLSOB, GLSRC, GLSTA · 03→ BPZ8HS-10 0.8 mm
115 HP 115 · L4SRC, L4STS 19 mm reach plugs · 03→ BKR6ES BKR6EIX 0.8 mm
115 HP 115 · LV4 F.F.I. · 98→02 PZFR6H 0.8 mm
115 HP 115 · PL450R, PL4SRC, PL4STS · 03→ BKR6ES BKR6EIX 0.8 mm
115 HP 115 · PLSOR, PLSRC, PLSTS · 03→ BPZ8HS-10 0.8 mm
115 HP 115 · PX450R, PX4SRC, PX4STS · 03→ BKR6ES BKR6EIX 0.8 mm
115 HP 115 · PXSOR, PXSRM, PXSTS · 03→ BPZ8HS-10 0.8 mm
115 HP 115 · WPLSOC, WPLSRS · 04→ BPZ8HS-10 0.8 mm
115 HP 115 · X4STS 19 mm reach plugs · 03→ BKR6ES BKR6EIX 0.8 mm
120 HP 120 · LV4 · 85→03 BPZ8HS-10 0.8 mm
125 HP 125 · COM · 71→72 B7HS BR7HIX 0.8 mm
130 HP 130 · LV4 · 85→03 BPZ8HS-10 0.8 mm
140 HP 140 · 03→05 BKR6ES BKR6EIX 0.8 mm
140 HP 140 · LV4 · 85→02 BPZ8HS-10 0.8 mm
150 HP 150 · Carb. · 02→06 BPZ8HS-10 0.8 mm
150 HP 150 · COM, Fast Strike LV6 (Excl. F.F.I.) · 91→01 BPZ8HS-10 0.8 mm
150 HP 150 · CV6 · 88→91 BZ7HS-10 0.8 mm
150 HP 150 · LV6 F.F.I. · 97→98 PZFR6H 0.8 mm
155 HP 155 · COM, CV6 · 78→92 BUZ8H
175 HP 175 · CV6 · 88→91 BZ7HS-10 0.8 mm
175 HP 175 · Fast Strike LV6 (Excl. F.F.I.) · 91→06 BPZ8HS-10 0.8 mm
175 HP 175 · LV6 F.F.I. · 98→ PZFR6H 0.8 mm
185 HP 185 · 77→87 BUZ8H
185 HP 185 · COM · 90→93 BZ7HS-10 0.8 mm
200 HP 200 · (Excl. DI) · 04→05 BKR6ES BKR6EIX 0.8 mm
200 HP 200 · 76→83 BUZ8H
200 HP 200 · COM · 92→93 BUZ8H
200 HP 200 · COM · 93→98 BPZ8HS-10 0.8 mm
200 HP 200 · LV6 DI · 04→ PZFR6H 0.8 mm
200 HP 200 · V6 · 86→93 BZ7HS-10 0.8 mm
200 HP 200 · Venom LV6 · 94→03 BPZ8HS-10 0.8 mm
225 HP 225 · (Excl. DI) · 04→05 BKR6ES BKR6EIX 0.8 mm
225 HP 225 · LV6 DI · 04→ PZFR6H 0.8 mm
225 HP 225 · V6 · 86→93 BZ7HS-10 0.8 mm
225 HP 225 · Venom LV6 · 94→01 BPZ8HS-10 0.8 mm
250 HP 250 · V8 · 85→97 BPZ8HS-10 0.8 mm
275 HP 275 · 85→88 BPR7HS BPR7HIX 0.8 mm
300 HP 300 · Sea Drive · 88→92 BZ7HS-10 0.8 mm
300 HP 300 · V8 · 85→97 BPZ8HS-10 0.8 mm
— 1979-1971 BUHW-2
— 1980-1978 BUHW-2
— 1984-1973 BUHXW-1
— 1985 BUHXW-1
— 1985-1978 BUHXW-1
— 1987-1977 BUHXW-1
— 1988-1987 BUHW-2
— 2005-2003 BKR6E BKR6EIX 0.9 mm
— 2005-2004 BKR6E BKR6EIX 0.9 mm
— 2005-2004 BPR7HS BPR7HIX 0.5 mm
10E, 10R, 10SEL 1979-1977 BUHW-2
12mm Plug 2003-1996 DR6HS 0.7 mm
12mm Plug 2003-1997 DR6HS 0.7 mm
25E, 25EL, 25R 1978-1977 BUHW-2
3.6L 85→86 BZ7HS-10 0.8 mm
AIR BUOY Diving unit Standard Ign. BM4A 0.6 mm
All models AD, JW, QD, TN, V4H, V4ML · 52→68 B6S 0.8 mm
All models CD, JH Standard Ign. · 54→68 B6S 0.8 mm
All models FD, FDE Standard Ign. · 56→68 B6S 0.8 mm
All models JHF, JWF Standard Ign. · 67→68 B6S 0.8 mm
All models LD, MQ Standard Ign. · 64→68 B6S 0.8 mm
All models RD, RDE, RDS, RJE, RK Standard Ign. · 51→68 B6S 0.8 mm
All models RX, RXE Standard Ign. · 62→68 B6S 0.8 mm
All models SC Standard Ign. · 68→ B6S 0.8 mm
All models Standard Ign. Dia. 18 mm plug · 39→50 AB-6 0.8 mm
COM 1982-1981 BUHW-2
COM 2001-1984 BUHXW-1
COM 2002-1981 BUHXW-1
COM 2002-1984 BUHXW-1
COM 2003-1984 BUHXW-1
COM 2005-1986 BUHXW-1
COM HC LC 2003-1988 BUHXW-1
CV4 1998-1979 BZ7HS-10 1.0 mm
CV6 1987-1978 BUHXW-1
EL4SOR, R4SOA, L4SOA, TBL4SOB, TE4SOA, TEL4SOA 2005 BKR6E BKR6EIX 0.9 mm
GLSOB, PX4SOR 2005 BKR6E BKR6EIX 0.9 mm
J15EL4SDC,J15R4SDM,J15RL4SDM,J15TE4SDM,J 15TEL4SDM,J15EL4SOS,J15R4SOA,J15RL4SOA,J 15TE4SOA,J15TEL4SOA,J15WRLSOB,J15WRSOB, J15EL4SUR,J15R4SUB,J15RL4SUB,J15TE4SUB,J1 5TEL4SUB 2007-2005 BKR6E BKR6EIX 0.9 mm
KERO 1998-1995 BUHXW-1
L4SRC, 5X4SRC, PL4SRC, PX4SRC 2004 BKR6E BKR6EIX 0.9 mm
L4STS, X4STS, PL4STS, PX4STS 2003 BKR6E BKR6EIX 0.9 mm
LV4 F.F.I. 1998 PZFR6H 0.8 mm
LV6 2001-1999 BUHXW-1
LV6 DI 2004 PZFR6H 0.8 mm
LV6 F.F.I. 1998 PZFR6H 0.8 mm
LV6 F.F.I. 1998-1997 PZFR6H 0.8 mm
MAG 1979-1977 BUHW-2
PL450R, PX450R 2005 BKR6E BKR6EIX 0.9 mm
PL4SRC, PX4SRC, PL4SRC, PX4SRC 2004 BKR6E BKR6EIX 0.9 mm
PL4STC, PX4STC, PL4STC, PX4STC 2003 BKR6E BKR6EIX 0.9 mm
STARFLITE 1984-1973 BUHXW-1
TRIUMPH 1971-1970 BUZHW
TURBOJET CV4 1998-1994 BZ7HS-10 1.0 mm
X-115 1968-1967 BUZHW

Outboard Marine 8 applications

Model Engine / details NGK plug Premium upgrade Gap
1.6L 84→92 BZ7HS-10 0.8 mm
1.8L 84→92 BZ7HS-10 0.8 mm
2.0L 90→92 BZ7HS-10 0.8 mm
2.3L 90→92 BZ7HS-10 0.8 mm
2.6L 84→90 BZ7HS-10 0.8 mm
2.7L 84→90 BZ7HS-10 0.8 mm
3.6L 84→90 BZ7HS-10 0.8 mm
4.0L 90→91 BZ7HS-10 0.8 mm

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 and G or GP the platinum ranges, both direct upgrades with a finer centre electrode. A Y- prefix is a diesel glow plug, not a spark plug, and has no gap. Where NGK specifies the solid-terminal build of a plug we show the base code, which is the one we stock — tell us if your leads need the solid-terminal version.

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

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 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.

Applications compiled from NGK's published marine application guide and the NGK non-automotive catalogue, and reproduced here as reference data. NGK's own guides are the authority; always confirm against your engine's manual. Listings do not apply to racing or modified engines.