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Mercury spark plug

Mercury Outboard NGK Spark Plug Guide

NGK spark plugs are original equipment on many outboard motors and are excellent replacements for everyday engine maintenance. Please view the application guide below. You may also find the NGK spark plug code helpful.
Model Type Capacity Year Cylinder Engine Gap Standard Resistor [?]
2.2 2.2,2.5,3,3.3 HP         1.0mm (.040") BPR6HS-10  
2.2     1984-1989     0.6mm (.024") BP6HS BPR6HS
2.5           0.7mm (.028") BPR6HS  
3.4 L   1984-1986     0 BUHW  
3.4 L   1987-1988     0 BU8H  
3.5     1983-1985     0.7mm (.028") BP7HS  
3.6     1980-1981     0.7mm (.028") BP7HS  
3.6     1982-     0.7mm (.028") BP7HS  
3.9     1967-1968     0.5mm (.020") B5HS BR5HS
4 L4SC 1.73L   2007-     0.8mm (.032") ILFR6G-E  
4     1976-1979     0.6mm (.024") B6HS BR6HS
4     1980-1989     0.7mm (.028") BP7HS  
4     1986-1987     0 BUHW-2  
4.5     1975-1985     0 BUHW-2  
5     1988-1989     1.0mm (.040") BP7HS-10 BPR7HS-11
6     1986-     1.0mm (.040") BP7HS-10 BPR7HS-11
6     1987-1989     1.0mm (.040") BP8HS-10  
6     1993-1994     1.0mm (.040") BPZ8H-N-10  
6     2001-2006   2-Stroke 1.0mm (.040") BPZ8H-N-10  
7.5     1975-1978     0 BUHW-2  
7.5     1979-1985     1.0mm (.040") B9HS-10 BR9HS-10
8     1986-     1.0mm (.040") BP7HS-10 BPR7HS-11
8     1987-1989     1.0mm (.040") BP8HS-10  
8     1993-1994     1.0mm (.040") BPZ8H-N-10  
8     2001-2006   2-Stroke 1.0mm (.040") BPZ8H-N-10  
8     2006-2006   4-Stroke 0.7mm (.028") DCPR6E  
9.8     1975-1978     0 BUHW-2  
9.8     1979-1985     1.0mm (.040") B9HS-10 BR9HS-10
9.9     1986-     1.0mm (.040") BP7HS-10 BPR7HS-11
9.9     1987-1989     1.0mm (.040") BP8HS-10  
9.9     1993-1994     1.0mm (.040") BPZ8H-N-10  
9.9     2001-2006   2-Stroke 1.0mm (.040") BPZ8HS-10  
9.9     2006-   4-Stroke 0.7mm (.028") DCPR6E  
10 SEAPRO         1.5mm (.060") BP8HS-15  
15     2001-2006   2-Stroke 1.0mm (.040") BPZ8HS-10  
15           1.0mm (.040") BP8HS-10  
18 X   1984-1985     0 BUHW  
18     1980-1983     1.0mm (.040") B9HS-10 BR9HS-10
20 20   1986-1989     0 BUHW  
20 20200   1970-1980     0 BUHW-2  
20     1992-1994     1.0mm (.040") BPZ8H-N-10  
20     2001-2006   2-Stroke 1.0mm (.040") BPZ8H-N-10  
25 250   1980-1983     1.0mm (.040") B8HS-10 BR8HS-10
25 25XD   1984-1989     0 BUHW  
25 SEA-PRO   1993-1994     1.0mm (.040") BPZ8H-N-10  
25     2001-2006   2-Stroke 1.0mm (.040") BPZ8H-N-10  
25     2006-   4-Stroke 0.7mm (.028") DCPR6E  
30 303   2006-   4-Stroke 0.7mm (.028") DCPR7E  
30           1.0mm (.040") BPZ8H-N-10  
35 350   1984-1989     0 BUHW  
40 40   1979-1983     0 BUHW  
40 403   2006-   4-Stroke 0.7mm (.028") DCPR7E  
40 BIG FOOT   2001-2006   4-Stroke 0.9mm (.036") DPR6EA-9  
40 SEA PRO   2001-2006   2-Stroke 1.0mm (.040") BPZ8H-N-10  
45 45   1986-1989     0 BUHW-2  
50 50   1986-1988     0 BUHW  
50 503   2001-2006   2-Stroke 1.0mm (.040") BPZ8H-N-10  
50 504   2006-   4-Stroke 0.7mm (.028") DCPR7E  
50 50500   1976-1985     0 BUHW-2  
50     1993-1994     1.0mm (.040") BPZ8H-N-10  
55 SEA-PRO   1993-1994     1.0mm (.040") BPZ8H-N-10  
60 600   1984-1989     0 BUHW  
60 603   2001-2006   2-Stroke 1.0mm (.040") BPZ8H-N-10  
60 604   2006-   4-Stroke 0.7mm (.028") DCPR7E  
70 70   1987-1989     0 BUHW-2  
70 700   1979-1983     0 BUHW  
75 750   1984-1986     0 BUHW-2  
75 753   2001-2006   2-Stroke 0 BUZHW-2  
75 754   2000-2006   4-Stroke 1.1mm (.044") LFR5A-11  
75 OPTI MAX   2006-     0.8mm (.032") IZFR5J  
80 80800   78-83, 86-89     0 BUHW-2  
85 850   1977-     0 BUHW-2  
90 90   1987-1989     0 BUHW-2  
90 90   2000-2006   4-Stroke 1.1mm (.044") LFR5A-11  
90 90   2006-   OPTI MAX 0.8mm (.032") IZFR5J  
90 90900   1978-1986     0 BUHW  
100 100   1988-1989     0 BUHW  
100     1991-1994     1.0mm (.040") BPZ8H-N-10  
115 115, 1150   1970-1988     0 BUHW  
115 OPTI MAX   2006-     0.8mm (.032") IZFR5J  
115     1991-1994 4   1.0mm (.040") BPZ8H-N-10  
115     2001-2006   2-Stroke 1154 1.0mm (.040") BPZ8H-N-10  
115     2001-2006   4-Stroke MFI4 1.1mm (.044") LFR5A-11  
125     1994     1.0mm (.040") BPZ8H-N-10  
125     2001-2006   2-Stroke 1254 1.0mm (.040") BPZ8H-N-10  
135 OPTI MAX   2003-2006   2-Stroke DFI6 0.8mm (.032") IZFR5G  
135 V-135   1969-1989     0 BU8H  
135     2006-   4-Stroke EFI6 0.7mm (.028") ILFR6G  
140 140, 1400   1978-1980     0 BUHW  
150 150, 1500   1973-1984     0 BUHW  
150 XR-4,V-150   1985-1989     0 BU8H  
150     2000-2006   2-Stroke EFI6 1.0mm (.040") BPZ8HS-10  
150     2000-2006     1.0mm (.040") BPZ8HS-10  
150     2006-   4STROKE EFI6 0.7mm (.028") ILFR6G  
150         OPTI MAX 1.1mm (.044") PZFR5F-11 ZFR5F-11
175 175,1750   1976-1981     0 BUHW  
175 OPTI MAX   2003-2006   2-Stroke 0.8mm (.032") IZFR5G  
175 SUPERCHARGED   2006-   4-Stroke EFI6 0.7mm (.028") ILFR6G  
175 V-175   1986-1989     0 BU8H  
200 200,2000   1978-1985     0 BUHW  
200 OPTI MAX   2003-2006   2-Stroke MAX 6 0.8mm (.032") IZFR5G  
200 V-200   1986-1989     0 BU8H  
200 VERADO 200-275       4-Stroke 0.7mm (.028") ILFR6G  
200     2000-   200 1.0mm (.040") BPZ8HS-10  
200     2000-2006   2-Stroke MF16 1.0mm (.040") BPZ8HS-10  
200     2006-   2-Stroke EFI6 0.8mm (.032") BR8HS  
200     2006-   4-Stroke EFI6 0.7mm (.028") ILFR6G  
200         OPTI MAX 1.1mm (.044") PZFR5F-11 ZFR5F-11
220 V-220   1987-1988     0 BU8H  
225 225   1980-1981     0 BUHW  
225 3.0L   1994-1997     1.0mm (.040") BPZ8H-N-10  
225 OPTI MAX   2006-   2-Stroke 0.8mm (.032") IZFR5G  
225     1994     1.0mm (.040") BPZ8H-N-10  
225     1995-2006   2-Stroke 0.8mm (.032") BR8HS  
225     2006-   4-Stroke 1.1mm (.044") LFR5A-11  
250 OPTI MAX   2003-2006     0.7mm (.028") IZFR6J  
250 SUPERCHARGED   2006-     0.7mm (.028") ILFR6G  
250           0 BU8H  
275     2006-     0.7mm (.028") ILFR6G  
300 300   1980-1983     0 BUHW  
300 OPTIMAX 300XS 3.16L   2007-     0.8mm (.032") IZFR7M  

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