NGK Spark Plugs: Mariner & Force Outboards

NGK Spark Plugs: Mariner & Force Outboards

284 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.

Mariner 251 applications

Model Engine / details NGK plug Premium upgrade Gap
2 HP 2 · 2A 646 B6HS BR6HIX 0.6 mm
2 HP 2 · 2B 6A1 · E: M-011 601 on B5HS 0.6 mm
2 HP 2 · 2B 6A1 · E: To: M-011 600 B6HS BR6HIX 0.6 mm
2.5 HP 2.5 · 2-Stroke 75cc 3Kw · 89→97 B6HS BR6HIX 0.6 mm
2.5 HP 2.5 · 98→ BPR6HS BPR6HIX 0.8 mm
3 HP 3 · 90→92 B6HS BR6HIX 0.6 mm
3.3 HP 3.3 · 93→02 BPR6HS-10 BPR6HIX 1.0 mm
3.5 HP 3.5 · 642 · E: M-23 741, ML-41 691 on B6HS BR6HIX 0.6 mm
3.5 HP 3.5 · 642 · E: To: M-23 740, ML-41 690 B7HS BR7HIX 0.6 mm
4 HP 4 · 2-Stroke · 90→97 BR7HS BR7HIX 0.9 mm
4 HP 4 · 2-Stroke · 98→02 BPR7HS-10 BPR7HIX 1.0 mm
4 HP 4 · 4A 6E0 · 2-Stroke · →89 B7HS BR7HIX 0.6 mm
4 HP 4 · Sailmate · 4-Stroke 123cc · 99→02 DCPR7E DCPR7EIX 0.9 mm
5 HP 5 · 2-Stroke · 90→97 BR7HS BR7HIX 0.9 mm
5 HP 5 · 2-Stroke · 98→02 BPR7HS-10 BPR7HIX 1.0 mm
5 HP 5 · 4-Stroke · 99→02 DCPR6E 0.9 mm
5 HP 5 · 5A 661, 5B 661, 5C 6E3 · 2-Stroke · →89 B7HS BR7HIX 0.6 mm
6 HP 6 · 2-Stroke · 87→92 BP8HS-10 BPR8HIX 1.0 mm
6 HP 6 · 2-Stroke · 92→02 BP8H-N-10 BPR8HIX 1.0 mm
6 HP 6 · 4-Stroke · 92→02 DCPR6E 0.9 mm
6 HP 6 · 6C 6H8, 6D 6H6 · 2-Stroke B7HS BR7HIX 0.8 mm
8 HP 8 · 2-Cyl. · 87→92 BP8HS-10 BPR8HIX 1.0 mm
8 HP 8 · 8A 647, 655 · 91→95 B6HS BR6HIX 0.6 mm
8 HP 8 · 8B 677 B7HS BR7HIX 0.6 mm
8 HP 8 · 8C 6G1 · 91→95 B7HS BR7HIX 0.8 mm
8 HP 8 · 93→02 BP8H-N-10 BPR8HIX 1.0 mm
8 HP 8 · Bodensee · 95→99 CR6HS CR6HIX 0.7 mm
8 HP 8 · K8 680 · 91→00 B6HS BR6HIX 0.6 mm
8 HP 8 · Marathon, W8 677 · 91→95 B7HS BR7HIX 0.6 mm
9.9 HP 9.9 · 9.9C 682 CDI · 2-Stroke B7HS BR7HIX 0.8 mm
9.9 HP 9.9 · Big Foot, Sail Power Dia. 10 mm plug · 4-Stroke · 95→02 CR6HS CR6HIX 0.7 mm
9.9 HP 9.9 · Dia. 12 mm plug · 4-Stroke · 99→02 DPR6EA-9 0.9 mm
9.9 HP 9.9 · Dia. 14 mm plug · 2-Stroke · 87→94 BP8HS-10 BPR8HIX 1.0 mm
9.9 HP 9.9 · Dia. 14 mm plug · 2-Stroke · 95→00 BP8HS-15 1.5 mm
10 HP 10 · Magnum, Marathon · 91→02 BP8HS-15 1.5 mm
15 HP 15 · 15A 651 B7HS BR7HIX 0.6 mm
15 HP 15 · 15C 684 (Excl. CDI) B7HS BR7HIX 0.6 mm
15 HP 15 · 15C 684 CDI B7HS BR7HIX 0.8 mm
15 HP 15 · Dia. 12 mm plug · 4-Stroke · 98→02 DPR6EA-9 0.9 mm
15 HP 15 · Dia. 14 mm plug · 2-Cyl. · 89→02 BP8HS-15 1.5 mm
15 HP 15 · K15 669 B6HS BR6HIX 0.6 mm
15 HP 15 · K15 6K4, 6M7 · 84→00 B7HS BR7HIX 0.8 mm
15 HP 15 · Marathon (Excl. 684) · 92→96 BP8H-N-10 BPR8HIX 1.0 mm
15 HP 15 · Marathon (Excl. 684) · 97→02 BP8HS-15 1.5 mm
15 HP 15 · Marathon 684 (Excl. CDI) · 92→ B7HS BR7HIX 0.6 mm
15 HP 15 · Marathon 684 CDI B7HS-10 BR7HIX 0.9 mm
15 HP 15 · W15 662 B7HS BR7HIX 0.6 mm
15 HP 15 · W15 684 B7HS-10 BR7HIX 0.9 mm
20 HP 20 · 20A 653 B6HS BR6HIX 0.6 mm
20 HP 20 · 20C 6A9 B7HS BR7HIX 0.6 mm
20 HP 20 · Hi-Ign. Dia. 12 mm plug · 85→97 DCPR6E 0.9 mm
20 HP 20 · Incl. Jet Dia. 14 mm plug · 85→02 BP8H-N-10 BPR8HIX 1.0 mm
25 HP 25 · 25A 648, 25B 690, 25C 695 B7HS BR7HIX 0.6 mm
25 HP 25 · 92→ BU8H
25 HP 25 · Dia. 12 mm plug · 4-Stroke · 98→02 DPR6EA-9 0.9 mm
25 HP 25 · Incl. Marathon (Excl. 648, 694, 695) · 85→01 BP8H-N-10 BPR8HIX 1.0 mm
25 HP 25 · K25 6A4 · 97→00 B7HS BR7HIX 0.6 mm
25 HP 25 · Marathon 648, 694, 695 · 93→96 B7HS BR7HIX 0.6 mm
25 HP 25 · W25 648, W25 694, W25 695 · 92→96 B7HS BR7HIX 0.6 mm
28 HP 28 · 664 B7HS BR7HIX 0.6 mm
30 HP 30 · 30A 689 · 92→94 B7HS BR7HIX 0.6 mm
30 HP 30 · Dia. 12 mm plug · 2-Cyl. 4-Stroke · 99→02 DPR6EA-9 0.9 mm
30 HP 30 · Dia. 14 mm plug · 95→00 BP8H-N-10 BPR8HIX 1.0 mm
30 HP 30 · Jet · 3-Cyl. · 98→01 BP8H-N-10 BPR8HIX 1.0 mm
30 HP 30 · Marathon (Excl. 698B) · 95→02 BP8H-N-10 BPR8HIX 1.0 mm
30 HP 30 · Marathon 698B B7HS BR7HIX 0.6 mm
30 HP 30 · W30 689A, 689B · 92→93 B7HS BR7HIX 0.6 mm
40 HP 40 · (Excl. Bigfoot) Dia. 12 mm plug · 4-Cyl. 995cc · 02→ DCPR7E DCPR7EIX 0.9 mm
40 HP 40 · 2-Cyl. · 98→01 BP8H-N-10 BPR8HIX 1.0 mm
40 HP 40 · 40A 676A, 40B 675B, 40C 6E9 · 81→94 B8HS BR8HIX 0.6 mm
40 HP 40 · Bigfoot · 4-Stroke 995cc 30Kw · 00→ DCPR6E 0.9 mm
40 HP 40 · Dia. 12 mm plug · 3-Cyl. 747cc 4-Stroke · 02→ DCPR7E DCPR7EIX 0.9 mm
40 HP 40 · Dia. 12 mm plug · 3-Cyl. 747cc 4-Stroke · 98→01 DPR6EA-9 0.9 mm
40 HP 40 · Dia. 12 mm plug · 4-Cyl. 995cc · 98→01 DPR6EA-9 0.9 mm
40 HP 40 · Dia. 14 mm plug · 3-Cyl. · 98→01 BP8H-N-10 BPR8HIX 1.0 mm
40 HP 40 · K40 6F5 · 2-Cyl. · 84→00 B7HS BR7HIX 0.6 mm
40 HP 40 · Marathon 6F6 · 85→94 B7HS BR7HIX 0.6 mm
40 HP 40 · Marathon · 2-Cyl. · 95→02 BP8H-N-10 BPR8HIX 1.0 mm
40 HP 40 · W40 676A · 92→96 B8HS BR8HIX 0.6 mm
40 HP 40 · W40 6F6 · 97→ B7HS BR7HIX 0.6 mm
45 HP 45 · Bodensee · 4-Cyl. · 95→98 DPR6EA-9 0.9 mm
45 HP 45 · Jet · 3-Cyl. · 95→01 BP8H-N-10 BPR8HIX 1.0 mm
48 HP 48 · W48 670 B7HS BR7HIX 0.6 mm
50 HP 50 · 3-Cyl. 849cc · 91→01 BP8H-N-10 BPR8HIX 1.0 mm
50 HP 50 · 4-Cyl. 4-Stroke 935cc · 95→01 DPR6EA-9 0.9 mm
50 HP 50 · Bigfoot · 4-Stroke 995cc · 00→ DPR6EA-9 0.9 mm
55 HP 55 · M55 663 · E: E-004 041, EL-315 379 on B8HS-10 BR8HIX 0.9 mm
55 HP 55 · M55 663 · E: To: E-004 040, EL-315 378 B8HS BR8HIX 0.6 mm
55 HP 55 · Marathon (Excl. 663) · 91→02 BP8H-N-10 BPR8HIX 1.0 mm
55 HP 55 · Marathon 663 B8HS BR8HIX 0.6 mm
55 HP 55 · W55 663 B8HS BR8HIX 0.6 mm
60 HP 60 · 3-Cyl. 967cc 2-Stroke · 98→ BPR7HS-10 BPR7HIX 1.0 mm
60 HP 60 · 4-Cyl. (Excl. EFI) · 01→ DPR6EA-9 0.9 mm
60 HP 60 · 4-Cyl. EFI · 02→ DCPR7E DCPR7EIX 0.9 mm
60 HP 60 · 675 · E: L-302 051 on B8HS-10 BR8HIX 0.9 mm
60 HP 60 · 675 · E: S-000 781 on B8HS-10 BR8HIX 0.9 mm
60 HP 60 · 675 · E: To: L-302 050 B8HS BR8HIX 0.6 mm
60 HP 60 · 675 · E: To: S-000 780 B8HS BR8HIX 0.6 mm
60 HP 60 · 6F0 · 91→97 B8HS-10 BR8HIX 0.9 mm
60 HP 60 · 91→01 BP8H-N-10 BPR8HIX 1.0 mm
60 HP 60 · Big Foot · 95→99 BP8H-N-10 BPR8HIX 1.0 mm
60 HP 60 · E, EL · 2-Cyl. BR8HS-10 BR8HIX 1.0 mm
60 HP 60 · Marathon · 95→02 BP8H-N-10 BPR8HIX 1.0 mm
75 HP 75 · 4-Cyl. 4-Stroke · 00→06 LFR5AP-11 1.1 mm
80 HP 80 · Jet · 95→01 BP8H-N-10 BPR8HIX 1.0 mm
90 HP 90 · 4-Stroke · 00→ LFR5AP-11 1.1 mm
100 HP 100 · 88→99 BP8H-N-10 BPR8HIX 1.0 mm
105 HP 105 · Jet · 6-Cyl. · 95→99 BU8H
115 HP 115 · (Excl. OptiMax) · 4-Cyl. 2-Stroke · 89→02 BP8H-N-10 BPR8HIX 1.0 mm
115 HP 115 · OptiMax · 00→04 PZFR5F-11 ZFR5FIX-11 1.0 mm
125 HP 125 · 4-Cyl. · 94→02 BP8H-N-10 BPR8HIX 1.0 mm
135 HP 135 · 00→01 BPZ8HS-10 1.0 mm
135 HP 135 · Incl. Marathon, Work · 86→99 BU8H
135 HP 135 · OptiMax · 98→02 PZFR5F-11 ZFR5FIX-11 1.0 mm
135 HP 135 · V6 · 98→ BPR7HS-10 BPR7HIX 1.0 mm
140 HP 140 · Jet · 95→99 BU8H
150 HP 150 · 150, V150, W150 · 00→01 BPZ8HS-10 1.0 mm
150 HP 150 · 150, V150, W150 · 79→99 BU8H
150 HP 150 · 2-Stroke V6 EFI 2507cc · 00→01 BPZ8HS-10 1.0 mm
150 HP 150 · 2-Stroke V6 RFI 2507cc · →99 BU8H
150 HP 150 · DFI · 97→ ZFR6F-11 ZFR6FIX-11 1.1 mm
150 HP 150 · Magnum (Incl. II, III, Super Magnum) · Incl. EFI · 88→99 BU8H
150 HP 150 · Magnum I, II · EFI · 00→ BPR7HS-10 BPR7HIX 1.0 mm
150 HP 150 · OptiMax · 97→02 PZFR5F-11 ZFR5FIX-11 1.0 mm
150 HP 150 · Work BU8H
175 HP 175 · (Excl. Magnum, Ski) · EFI · 00→ BPZ8HS-10 1.0 mm
175 HP 175 · Magnum, Ski · EFI · 00→ BPR7HS-10 BPR7HIX 1.0 mm
175 HP 175 · Magnum, Ski · EFI · 89→99 BU8H
175 HP 175 · V175 · 78→98 BU8H
200 HP 200 · (Excl. OptiMax) · DFI · 97→ PZFR6H 1.0 mm
200 HP 200 · Incl. Super Magnum · EFI · 00→ BPZ8HS-10 1.0 mm
200 HP 200 · Magnum, Super Magnum · EFI · 79→99 BU8H
200 HP 200 · OptiMax · 97→04 PZFR5F-11 ZFR5FIX-11 1.0 mm
220 HP 220 · Magnum, V220 · EFI · 87→88 BU8H
225 HP 225 · Marathon · 94→01 BR8HS BR8HIX 1.0 mm
225 HP 225 · OptiMax · 98→04 PZFR5F-11 ZFR5FIX-11 1.0 mm
225 HP 225 · Super Magnum · EFI 3032cc · 97→ BU8H
240 HP 240 · Carb. · 95→ BU8H
250 HP 250 · 89→90 BU8H
250 HP 250 · Magnum · 2-Stroke EFI · 96→01 BR8HS BR8HIX 0.9 mm
260 HP 260 · EFI · 95→98 BU8H
265 HP 265 · EFI · 97→ BU8H
275 HP 275 · 91→94 BU8H
300 HP 300 · Super Magnum · EFI · 97→98 BZ7HS-10 0.8 mm
115 1988-1977 BUZHW
115 OPTIMAX 2004-2000 PZFR5F-11 1.0 mm
135 OPTI MAX 2002-1998 PZFR5F-11 1.0 mm
140 BUZHW
15 MARATHON 684 B7HS-10 1.0 mm
15 MARATHON 684 BR7HS BR7HIX 0.7 mm
150 OPTI MAX 2002-1997 PZFR5F-11 1.0 mm
15A 651 BR7HS BR7HIX 0.7 mm
15C 684 B7HS-10 1.0 mm
15C 684 BR7HS BR7HIX 0.7 mm
2.5L DRAG EFI V6 1998-1997 BUZHW
200 DFI 3.0L 1997 PZFR6H 1.0 mm
200 OPTI MAX 2004-1997 PZFR5F-11 1.0 mm
200 VERADO 2011-2006 ILFR6G-E 0.8 mm
20A 653 BR6HS BR6HIX 0.7 mm
20C 6A9 BR7HS BR7HIX 0.7 mm
225 EFI LFR5A-11 LFR5AIX-11 1.1 mm
225 OPTI MAX DFI 2004-1998 PZFR5F-11 1.0 mm
225 VERADO 2011-2006 ILFR6G-E 0.8 mm
25 MARATHON 648, 694, 695 BR7HS BR7HIX 0.7 mm
250 PRO VERADO 2011-2006 ILFR6G-E 0.8 mm
25A, 25B, 25C BR7HS BR7HIX 0.7 mm
275 VERADO 2011-2006 ILFR6G-E 0.8 mm
28 664 BR7HS BR7HIX 0.7 mm
2A 646 BR6HS BR6HIX 0.7 mm
2B 6A1, FROM M-011601 BR5HS 0.6 mm
2B 6A1, TO M-011600 BR6HS BR6HIX 0.7 mm
3.5 642, FROM M-23741 BR6HS BR6HIX 0.7 mm
3.5 642, FROM ML-41691 BR6HS BR6HIX 0.7 mm
3.5 642, TO M-23740 BR7HS BR7HIX 0.7 mm
3.5 642, TO ML-41690 BR7HS BR7HIX 0.7 mm
30 JET 1997-1995 BUZHW-2
30 MARATHON 698B BR7HS BR7HIX 0.7 mm
300 PRO VERADO 2011-2006 ILFR6G-E 0.8 mm
30A 689 1994-1992 BR7HS BR7HIX 0.7 mm
40 1997-1989 BUZHW-2
40 MARATHON 6F6 1994-1985 BR7HS BR7HIX 0.7 mm
40A 676A BR8HS BR8HIX 0.6 mm
40B 675B BR8HS BR8HIX 0.6 mm
40C 6E9 1994-1981 BR8HS BR8HIX 0.6 mm
45 1989-1986 BUZHW-2
48 670 BR7HS BR7HIX 0.7 mm
4A 6E0 BR7HS BR7HIX 0.7 mm
50 1985-1980 BUZHW-2
50 1990-1986 BUZHW
5A 661 BR7HS BR7HIX 0.7 mm
5C 6E3 BR7HS BR7HIX 0.7 mm
60 1990-1984 BUZHW
60 675, FROM L-302051 B8HS-10 1.0 mm
60 675, FROM S-000781 B8HS-10 1.0 mm
60 675, TO L-302050 BR8HS BR8HIX 0.6 mm
60 675, TO S-000780 BR8HS BR8HIX 0.6 mm
60 6F0 B8HS-10 1.0 mm
65 JET 2001-1995 BUZHW-2
6B 678 BR5HS 0.6 mm
6C 6H8 B7HS-10 1.0 mm
6D 6H6 B7HS-10 1.0 mm
70 BUZHW
75 BUZHW-2
75 2000 LFR5A-11 LFR5AIX-11 1.1 mm
75 2001-1987 BUZHW-2
75 MARATHON 2002-1991 BUZHW-2
80 BUZHW-2
85 BUZHW-2
8A 647 BR6HS BR6HIX 0.7 mm
8A 655 BR6HS BR6HIX 0.7 mm
8B 677 BR7HS BR7HIX 0.7 mm
8C 6G1 B7HS-10 1.0 mm
9.9C 682 B7HS-10 1.0 mm
9.9C 682 BR7HS BR7HIX 0.7 mm
90 BUZHW
90 2000 LFR5A-11 LFR5AIX-11 1.1 mm
90 2001-1987 BUZHW-2
K15 669 BR6HS BR6HIX 0.7 mm
K15 6K4 2000-1984 B7HS-10 1.0 mm
K15 6M7 B7HS-10 1.0 mm
K25 6A4 2000-1997 BR7HS BR7HIX 0.7 mm
K40 6F5 2000-1984 BR7HS BR7HIX 0.7 mm
K8 680 2000-1991 BR6HS BR6HIX 0.7 mm
M55 663, FROM E-004041 B8HS-10 1.0 mm
M55 663, FROM EL-315379 B8HS-10 1.0 mm
M55 663, TO E-004040 BR8HS BR8HIX 0.6 mm
M55 663, TO EL-315378 BR8HS BR8HIX 0.6 mm
MARATHON 55 663 BR8HS BR8HIX 0.6 mm
MARATHON 8 677 BR7HS BR7HIX 0.7 mm
OPTIMAX 115, 115 DFI 2011-2006 IZFR5J 0.8 mm
OPTIMAX 125 IZFR5J 0.8 mm
OPTIMAX 150 IZFR5G 0.8 mm
OPTIMAX 200 IZFR5G 0.8 mm
OPTIMAX 225 IZFR5G 0.8 mm
OPTIMAX 75, DFI IZFR5J 0.8 mm
OPTIMAX 90, DFI IZFR5J 0.8 mm
VERADO 135 ILFR6G-E 0.8 mm
VERADO 150 ILFR6G-E 0.8 mm
VERADO 175 ILFR6G-E 0.8 mm
VERADO 250 ILFR6G-E 0.8 mm
VERADO 300 ILFR6G-E 0.8 mm
W15 662 BR7HS BR7HIX 0.7 mm
W15 684 B7HS-10 1.0 mm
W25, WS25 BR7HS BR7HIX 0.7 mm
W30 689A 1993-1992 BR7HS BR7HIX 0.7 mm
W30 689B 1993-1992 BR7HS BR7HIX 0.7 mm
W40 676A BR8HS BR8HIX 0.6 mm
W40 6F6 BR7HS BR7HIX 0.7 mm
W48 670 BR7HS BR7HIX 0.7 mm
W55 663 BR8HS BR8HIX 0.6 mm
W8 677 BR7HS BR7HIX 0.7 mm

Force (U.S. Marine) 33 applications

Model Engine / details NGK plug Premium upgrade Gap
3 HP 3 · 90→94 BP6HS-10 BPR6HIX 1.0 mm
4 HP 4 · 84→87 B6HS BR6HIX 0.8 mm
5 HP 5 · 88→93 BP6HS BPR6HIX 0.8 mm
5 HP 5 · 94→99 BP6HS BPR6HIX 0.9 mm
7.5 HP 7.5 · 85→ B6HS BR6HIX 0.8 mm
9.9 HP 9.9 · 84→93 BP6HS BPR6HIX 0.8 mm
9.9 HP 9.9 · 94→99 BP6HS BPR6HIX 0.9 mm
15 HP 15 · 84→93 BP7HS BPR7HIX 0.8 mm
15 HP 15 · 94→99 BP7HS BPR7HIX 0.9 mm
25 HP 25 · 89→91 BP6HS BPR6HIX 0.8 mm
25 HP 25 · 96→99 BP7HS BPR7HIX 0.9 mm
35 HP 35 · 86→91 B6HS-10 BR6HIX 1.0 mm
50 HP 50 · 84→87 B7HS BR7HIX 0.8 mm
50 HP 50 · Prestolite Ign. · 88→91 BUHX
85 HP 85 · 83→89 BUHX
90 HP 90 · Prestolite Ign. · 90→91 BUHX
120 HP 120 · Prestolite Ign. · 90→91 BUHX
125 HP 125 · 83→89 BUHX
150 HP 150 · Prestolite Ign. · 89→91 BUHX
— 1985 BUZHW
— 1985 BR6HS BR6HIX 0.8 mm
— 1987-1984 BR7HS BR7HIX 0.8 mm
— 1987-1984 BR6HS BR6HIX 0.8 mm
— 1991-1986 BR6HS-10 1.0 mm
— 1999-1984 BPR7HS BPR7HIX 0.8 mm
— 1999-1984 BPR6HS BPR6HIX 0.8 mm
— 1999-1988 BPR6HS BPR6HIX 0.8 mm
— 1999-1992 BUZHW
— 1999-1996 BUZHW
— 1999-1996 BPR7HS BPR7HIX 0.9 mm
W/THUNDERBOLT IGN. 1994-1991 BUZHW
W/THUNDERBOLT IGN. 1995-1991 BUZHW
W/THUNDERBOLT IGN. 1999-1991 BUZHW

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.