Horsepower Year Spark Plug Number
(see notes 1 and 2) Gap (in.)
1.5 1968 - 1970 J6C .030
2, JR 1971 - 1990 RJ6C .030
Ultra, Excel 4 1987 - 1988 L78V surface gap or QL77JC4 .030
2.0, 2.3 1991 - 2001 L87YC or QL87YC .030
2.5 1987 - 1988 QL86C .030
3 1952 - 1968 J6C .030
3.3 1991 - 2001 L87YC or QL87YC .030
3.5 2002 & newer QL87YC .030
3, 4, 4 Deluxe 1989 - 2001 QL86C .030
4 1969 - 1976 J6C .030
4 1977 - 1987 QL86C or L86C .030
4 1988 QL77JC4 .030
4, 5 (4-Stroke) 2002 & newer NGK BPR6ES .030
4.5 1980 - 1985 QL86C .030
5 1965 - 1968 J6C .030
5 1990 - 1997 QL86C .030
5 1998 - 2001 NGK BPR7HS-10 (see note 1) .035
5 (4-Stroke) 1997 - 2001 P10Y .027
5 (4-Stroke) 2002 & newer NGK BPR6ES .030
5.5 1954 - 1964 J6C .030
6 1965 - 1976 J6C .030
6 (4-Stroke) 1998 - 2001 P10Y .027
6 (4-Stroke) 2003 - 2004 RP10HC .027
6 (4-Stroke) 2005 & newer NGK BPR6ES .030
6.5 Commercial 1981 - 1993 QL77JC4 .030
7.5 1952 - 1958 J6C .030
6, 7.5, 8, 8 Commercial 1977 - 2001 QL77JC4 or QL86C .030
8 (4-Stroke) 1998 - 2001 P10Y .027
8 (4-Stroke) 2003 & newer RP10HC .027
9.5 1964 - 1973 J4C .030
9.9 1974 - 1976 UL81C .030
9.9 1977 - 1994 QL77JC4 or QL82C .030
9.9 1995 & newer QL82C .030
9.9 (4-Stroke, 211cc) 1998 - 2001 P10Y .027
9.9 (4-Stroke, 305cc) 1995 - 2001 RA8HC .030
9.9 (4-Stroke w/Mikuni Carburetor) 2003 - 2004 NGK DCPR6E (see note 1) .031
9.9 (4-Stroke w/Keihin Carburetor) 2005 & newer NGK DCPR6E (see note 1) .031
10 1952 - 1958 J6C .030
10 1959 - 1963 J4C .030
10 Commercial 1992 - 1993 QL77JC4 .030
10, 15 Commercial 1994 - 2001 QL82C .030
14 1988 - 1989 QL77JC4 .030
14 Commercial 1981 - 1991 QL77JC4 .030
15 1974 - 1976 UL81C .030
15 1977 - 1992 QL77JC4 (or L78V Surface Gap) .030
9.9 & 15 Big Bore 1993 - 2001 QL82C .030
15 1954 - 1956 J6C .030
15 Commercial 1992 - 1993 QL77JC4 .030
15 (4-Stroke) 1995 - 2001 RA8HC .030
15 (4-Stroke w/Mikuni Carburetor) 2003 - 2004 NGK DCPR6E (see note 1) .031
15 (4-Stroke w/Keihin Carburetor) 2005 & newer NGK DCPR6E (see note 1) .031
15 (Kerosene) 1995 - 2001 UL77V Surface Gap
18 1957 - 1973 J4C .030
18 Jet (25hp powerhead) 1995 - 2001 QL77JC4 or L78V or QL82C .030
20 1966 - 1973 J4C .030
25 1952 - 1955 J4C .030
25 1969 - 1976 J4C .030
25 1977 QL77JC4 or QL82C .030
20, 25, 28, 30 1978 - 2001 QL77JC4 or L78V or QL82C .030
25, 30 2003 & newer QL77JC4 .030
25, 30 (4-Stroke) 2001 & 200 NGK DCPR6E (see note 1) .031
25 Commercial 1981 - 2001 QL16V or L16V Surface Gap
25, 35 (3-Cylinder) 1995 - 2001 QL82C .030
28 1962 - 1964 J4C .030
28 Jet (40hp powerhead) 1992 - 2001 QL78YC .030
30 1956 J6C .030
33 1965 -1971 J4C .030
35 1957 - 1959 J6C .030
35 1976 UL81C .030
35 1977 - 2000 QL77JC4 .030
35 (3-Cylinder) 1995 - 2001 QL82C .030
35 Jet (50hp powerhead) 1993 - 2001 QL78YC .030
E-TEC 40, 50, 60 2004 & newer QC12PEP .030
40 1960 - 1973 J4C .030
40 1974 - 1976 UL81C .030
40 Commercial (43 cu. in.) 1981 - 1990 UL81C .030
40 Commercial (45 cu. in.) 1984 - 2001 QL16V Surface Gap
45, 55 Commercial 1986 - 2001 QL16V or L16V Surface Gap
50 (V4) 1958 - 1959 J4C .030
50 1971 - 1975 L77JC4 or QL77JC4 .030
40, 50 (4-Stroke) 1999 & newer NGK DCPR6E (see note 1) .031
40, 48, 50 (2-Cylinder) 1980 - 1988 L78V Surface Gap or QL77JC4 .030
40, 48, 50 (2-Cylinder) 1989 - 2001 QL78YC (see note 3) .030
40, 50 2003 & newer QL78YC (see note 3) .030
E-TEC 50, 60 2004 & newer QC12PEP .030
50 (3-Cylinder) 1995 - 1998 QL78YC (see note 3) .030
55 (3-Cylinder) 1968 - 1969 L76V Surface Gap or L77JC4 .030
55 (2-Cylinder) 1976 - 1989 L78V Surface Gap or QL77JC4 .030
60 (2-Cylinder) 1980 - 1985 L78V Surface Gap or QL77JC4 .030
60 (3-Cylinder) 1970 - 1971 L76V Surface Gap or QL77JC4 .030
60 (V4) 1964 - 1967 J4C .030
E-TEC 60 2005 & newer QC12PEP .030
60, 70, 75 (49 cu. in.) 1975 - 1989 L77JC4 or QL77JC4 .030
60, 70 (56 cu. in.) 1989 - 1993 L77JC4 or QL77JC4 (see note 3) .030
60, 70 (56 cu. in.) 1994 - 2001 QL78YC (see note 3) .030
E-TEC 65 Jet 2005 & newer QC12PEP .030
65 Jet (90? crossflow V4) 1992 - 1998 QL77JC4 or QL82C (see note 3) .030
65 (V4) 1968 L76V Surface Gap or QL77JC4 .030
65 (3-Cylinder) 1972 - 1973 L77JC4
65 Commmercial 1984 - 1987 L78V Surface Gap or L77JC4 .030
65 Commmercial 1988 - 2001 QL16V or L16V Surface Gap
70 (4-Stroke) 1998 - 2001 NGK BPR6ES (see note 1) .028
60, 70 (4-Stroke) 2002 & newer NGK BPR6ES (see note 1) .028
E-TEC 75, 90 2004 & newer QC12PEP .030
75 (V4) 1960 - 1965 J4C .030
80 1966 - 1967 J4C .030
85 1973 - 1980 L77JC4 or QL77JC4 .030
90 1964 - 1965 J4C .030
80 Jet (90? crossflow V4) 19xx - 1998 QL77JC4 or QL82C (see note 3) .030
88, 90, 100, 110, 112, 115 1979 - 1998 QL77JC4 or QL82C .030
E-TEC 90 2004 & newer QC12PEP .030
90, 115 (60? V4 Eagle) 1995 & newer QL78YC (see note 3) .030
90, 115 Ficht 1998 - 1999 7712 .030
90, 115 Ficht 2000 & newer XC12PEPB .030
90, 115 TurboJet (90? crossflow V4) 1994 - 1997 QL77JC4 or QL82C (see note 3) .030
90, 115 (4-Stroke) 2003 & newer NGK BKR6E (see note 1) .028
100 1966 J4C .030
100 1967 - 1968 L78V Surface Gap or QL77JC4 .030
100 1971 - 1972 L76V Surface Gap or QL77JC4 .030
100 Commercial 1984 - 1998 L78V or QL16V Surface Gap
105 Jet (60? V6 Eagle) 1993 & newer QL78YC (see note 3) .030
105 Commercial (60? V4 Eagle) 1997 - 2001 QL78YC (see note 3) .030
115 1969 - 1970 L76V Surface Gap or QL77JC4 .030
115 1973 - 1979 QL16V Surface Gap or QL77JC4 .030
120, 140 (90? V4 Looper) 1985 - 1993 QL77JC4 or QL16V Surface Gap .030
120, 130, 135, 140 (90? V4 Looper) 1994 - 2001 QL78YC (see note 3) .030
125 1971 - 1972 L76V Surface Gap or QL77JC4 .030
135, 150, 175 Ficht/DI 2001 & newer XC12PEPB .030
135, 140 1973 - 1984 UL77V or L16V Surface Gap
140 (4-Stroke) 2003 & newer NGK BKR6E (see note 1) .028
150 Commercial (60? V6 Eagle) 1993 - 2001 QL78YC (see note 3) .030
150, 175 Ficht/DI 1997 - 1999 7712 (with non-pinned cylinder heads) .030
150, 175 Ficht/DI 1997 - 1999 XC12PEPB (with pinned cylinder heads) .030
150, 175 Ficht/DI 2000 & newer XC12PEPB .030
150, 155 (90? crossflow V6) 1978 - 1987 UL77V or L16V Surface Gap
150, 175 (90? crossflow V6) 1988 - 1991 QL77JC4 (see note 3) .030
155 Commercial 1989 - 1992 QL16V Surface Gap
175, 185 1977 - 1987 UL77V or QL16V Surface Gap
185 Commercial 1990 - 1993 QL16V Surface Gap or QL77JC4 .030
E-TEC 200, 225, 250 (incl. HO) 2005 & newer QC10PEPB .030
200, 225 (4-Stroke) 2004 & newer NGK BKR6E (see note 1) .028
200 1976 - 1983 UL77V or QL16V Surface Gap
200, 225 1986 - 1993 QL77JC4 .030
200, 225, 250 Ficht/DI (incl. HO) 1999 & newer QC12PEP .030
200 Commercial 1992 QL16V or L16V Surface Gap
200 Commercial 1993 - 2001 QL78YC (see note 3) .030
200, 225, 225HO 1994 - 2001 QL78YC (see note 3) .030
225, 250 Ficht/DI (incl. HO) 1999 & newer QC12PEP .030
E-TEC 225, 250 (incl. HO) 2005 & newer QC10PEPB .030
235 1978 - 1985 QL16V or UL77V Surface Gap
250 Ficht/DI 1999 & newer QC12PEP .030
250, 275, 300 (V8) 1985 - 1998 QL78YC (see note 3) .030
E-TEC 250 2005 & newer QC10PEPB .030
225 (4-Stroke) 2004 & newer NGK BKR6E (see note 1) .028
OMC Sea-Drive 2.5, 26 Litre 1988 - 1992 UL77V
OMC Sea-Drive 1.6, 1.8, 2.0,
2.7, 3.0 Litre 1988 - 1992 QL77JC4 (see note 3) .030
OMC Sea-Drive 3.6, 4.0 Litre 1988 - 1992 QL77JC4 (see note 3) .030
OMC Sail-Drive (Zepher) 1977 - 1984 QL8YC .045
NOTES:
1. All spark plugs are Champion brand unless otherwise specified.
2. When more than one plug number appears, the first plug listed is the prefered spark plug.
3. On ALL VRO/OMS equipped motors the "QL" supressor plug is recommended.
* This chart was assembled with the latest available Parts Catalogs, Service Manuals and Service Bulletins as of the
revision date. If any discrepencies are found, please notify the moderator.
(see notes 1 and 2) Gap (in.)
1.5 1968 - 1970 J6C .030
2, JR 1971 - 1990 RJ6C .030
Ultra, Excel 4 1987 - 1988 L78V surface gap or QL77JC4 .030
2.0, 2.3 1991 - 2001 L87YC or QL87YC .030
2.5 1987 - 1988 QL86C .030
3 1952 - 1968 J6C .030
3.3 1991 - 2001 L87YC or QL87YC .030
3.5 2002 & newer QL87YC .030
3, 4, 4 Deluxe 1989 - 2001 QL86C .030
4 1969 - 1976 J6C .030
4 1977 - 1987 QL86C or L86C .030
4 1988 QL77JC4 .030
4, 5 (4-Stroke) 2002 & newer NGK BPR6ES .030
4.5 1980 - 1985 QL86C .030
5 1965 - 1968 J6C .030
5 1990 - 1997 QL86C .030
5 1998 - 2001 NGK BPR7HS-10 (see note 1) .035
5 (4-Stroke) 1997 - 2001 P10Y .027
5 (4-Stroke) 2002 & newer NGK BPR6ES .030
5.5 1954 - 1964 J6C .030
6 1965 - 1976 J6C .030
6 (4-Stroke) 1998 - 2001 P10Y .027
6 (4-Stroke) 2003 - 2004 RP10HC .027
6 (4-Stroke) 2005 & newer NGK BPR6ES .030
6.5 Commercial 1981 - 1993 QL77JC4 .030
7.5 1952 - 1958 J6C .030
6, 7.5, 8, 8 Commercial 1977 - 2001 QL77JC4 or QL86C .030
8 (4-Stroke) 1998 - 2001 P10Y .027
8 (4-Stroke) 2003 & newer RP10HC .027
9.5 1964 - 1973 J4C .030
9.9 1974 - 1976 UL81C .030
9.9 1977 - 1994 QL77JC4 or QL82C .030
9.9 1995 & newer QL82C .030
9.9 (4-Stroke, 211cc) 1998 - 2001 P10Y .027
9.9 (4-Stroke, 305cc) 1995 - 2001 RA8HC .030
9.9 (4-Stroke w/Mikuni Carburetor) 2003 - 2004 NGK DCPR6E (see note 1) .031
9.9 (4-Stroke w/Keihin Carburetor) 2005 & newer NGK DCPR6E (see note 1) .031
10 1952 - 1958 J6C .030
10 1959 - 1963 J4C .030
10 Commercial 1992 - 1993 QL77JC4 .030
10, 15 Commercial 1994 - 2001 QL82C .030
14 1988 - 1989 QL77JC4 .030
14 Commercial 1981 - 1991 QL77JC4 .030
15 1974 - 1976 UL81C .030
15 1977 - 1992 QL77JC4 (or L78V Surface Gap) .030
9.9 & 15 Big Bore 1993 - 2001 QL82C .030
15 1954 - 1956 J6C .030
15 Commercial 1992 - 1993 QL77JC4 .030
15 (4-Stroke) 1995 - 2001 RA8HC .030
15 (4-Stroke w/Mikuni Carburetor) 2003 - 2004 NGK DCPR6E (see note 1) .031
15 (4-Stroke w/Keihin Carburetor) 2005 & newer NGK DCPR6E (see note 1) .031
15 (Kerosene) 1995 - 2001 UL77V Surface Gap
18 1957 - 1973 J4C .030
18 Jet (25hp powerhead) 1995 - 2001 QL77JC4 or L78V or QL82C .030
20 1966 - 1973 J4C .030
25 1952 - 1955 J4C .030
25 1969 - 1976 J4C .030
25 1977 QL77JC4 or QL82C .030
20, 25, 28, 30 1978 - 2001 QL77JC4 or L78V or QL82C .030
25, 30 2003 & newer QL77JC4 .030
25, 30 (4-Stroke) 2001 & 200 NGK DCPR6E (see note 1) .031
25 Commercial 1981 - 2001 QL16V or L16V Surface Gap
25, 35 (3-Cylinder) 1995 - 2001 QL82C .030
28 1962 - 1964 J4C .030
28 Jet (40hp powerhead) 1992 - 2001 QL78YC .030
30 1956 J6C .030
33 1965 -1971 J4C .030
35 1957 - 1959 J6C .030
35 1976 UL81C .030
35 1977 - 2000 QL77JC4 .030
35 (3-Cylinder) 1995 - 2001 QL82C .030
35 Jet (50hp powerhead) 1993 - 2001 QL78YC .030
E-TEC 40, 50, 60 2004 & newer QC12PEP .030
40 1960 - 1973 J4C .030
40 1974 - 1976 UL81C .030
40 Commercial (43 cu. in.) 1981 - 1990 UL81C .030
40 Commercial (45 cu. in.) 1984 - 2001 QL16V Surface Gap
45, 55 Commercial 1986 - 2001 QL16V or L16V Surface Gap
50 (V4) 1958 - 1959 J4C .030
50 1971 - 1975 L77JC4 or QL77JC4 .030
40, 50 (4-Stroke) 1999 & newer NGK DCPR6E (see note 1) .031
40, 48, 50 (2-Cylinder) 1980 - 1988 L78V Surface Gap or QL77JC4 .030
40, 48, 50 (2-Cylinder) 1989 - 2001 QL78YC (see note 3) .030
40, 50 2003 & newer QL78YC (see note 3) .030
E-TEC 50, 60 2004 & newer QC12PEP .030
50 (3-Cylinder) 1995 - 1998 QL78YC (see note 3) .030
55 (3-Cylinder) 1968 - 1969 L76V Surface Gap or L77JC4 .030
55 (2-Cylinder) 1976 - 1989 L78V Surface Gap or QL77JC4 .030
60 (2-Cylinder) 1980 - 1985 L78V Surface Gap or QL77JC4 .030
60 (3-Cylinder) 1970 - 1971 L76V Surface Gap or QL77JC4 .030
60 (V4) 1964 - 1967 J4C .030
E-TEC 60 2005 & newer QC12PEP .030
60, 70, 75 (49 cu. in.) 1975 - 1989 L77JC4 or QL77JC4 .030
60, 70 (56 cu. in.) 1989 - 1993 L77JC4 or QL77JC4 (see note 3) .030
60, 70 (56 cu. in.) 1994 - 2001 QL78YC (see note 3) .030
E-TEC 65 Jet 2005 & newer QC12PEP .030
65 Jet (90? crossflow V4) 1992 - 1998 QL77JC4 or QL82C (see note 3) .030
65 (V4) 1968 L76V Surface Gap or QL77JC4 .030
65 (3-Cylinder) 1972 - 1973 L77JC4
65 Commmercial 1984 - 1987 L78V Surface Gap or L77JC4 .030
65 Commmercial 1988 - 2001 QL16V or L16V Surface Gap
70 (4-Stroke) 1998 - 2001 NGK BPR6ES (see note 1) .028
60, 70 (4-Stroke) 2002 & newer NGK BPR6ES (see note 1) .028
E-TEC 75, 90 2004 & newer QC12PEP .030
75 (V4) 1960 - 1965 J4C .030
80 1966 - 1967 J4C .030
85 1973 - 1980 L77JC4 or QL77JC4 .030
90 1964 - 1965 J4C .030
80 Jet (90? crossflow V4) 19xx - 1998 QL77JC4 or QL82C (see note 3) .030
88, 90, 100, 110, 112, 115 1979 - 1998 QL77JC4 or QL82C .030
E-TEC 90 2004 & newer QC12PEP .030
90, 115 (60? V4 Eagle) 1995 & newer QL78YC (see note 3) .030
90, 115 Ficht 1998 - 1999 7712 .030
90, 115 Ficht 2000 & newer XC12PEPB .030
90, 115 TurboJet (90? crossflow V4) 1994 - 1997 QL77JC4 or QL82C (see note 3) .030
90, 115 (4-Stroke) 2003 & newer NGK BKR6E (see note 1) .028
100 1966 J4C .030
100 1967 - 1968 L78V Surface Gap or QL77JC4 .030
100 1971 - 1972 L76V Surface Gap or QL77JC4 .030
100 Commercial 1984 - 1998 L78V or QL16V Surface Gap
105 Jet (60? V6 Eagle) 1993 & newer QL78YC (see note 3) .030
105 Commercial (60? V4 Eagle) 1997 - 2001 QL78YC (see note 3) .030
115 1969 - 1970 L76V Surface Gap or QL77JC4 .030
115 1973 - 1979 QL16V Surface Gap or QL77JC4 .030
120, 140 (90? V4 Looper) 1985 - 1993 QL77JC4 or QL16V Surface Gap .030
120, 130, 135, 140 (90? V4 Looper) 1994 - 2001 QL78YC (see note 3) .030
125 1971 - 1972 L76V Surface Gap or QL77JC4 .030
135, 150, 175 Ficht/DI 2001 & newer XC12PEPB .030
135, 140 1973 - 1984 UL77V or L16V Surface Gap
140 (4-Stroke) 2003 & newer NGK BKR6E (see note 1) .028
150 Commercial (60? V6 Eagle) 1993 - 2001 QL78YC (see note 3) .030
150, 175 Ficht/DI 1997 - 1999 7712 (with non-pinned cylinder heads) .030
150, 175 Ficht/DI 1997 - 1999 XC12PEPB (with pinned cylinder heads) .030
150, 175 Ficht/DI 2000 & newer XC12PEPB .030
150, 155 (90? crossflow V6) 1978 - 1987 UL77V or L16V Surface Gap
150, 175 (90? crossflow V6) 1988 - 1991 QL77JC4 (see note 3) .030
155 Commercial 1989 - 1992 QL16V Surface Gap
175, 185 1977 - 1987 UL77V or QL16V Surface Gap
185 Commercial 1990 - 1993 QL16V Surface Gap or QL77JC4 .030
E-TEC 200, 225, 250 (incl. HO) 2005 & newer QC10PEPB .030
200, 225 (4-Stroke) 2004 & newer NGK BKR6E (see note 1) .028
200 1976 - 1983 UL77V or QL16V Surface Gap
200, 225 1986 - 1993 QL77JC4 .030
200, 225, 250 Ficht/DI (incl. HO) 1999 & newer QC12PEP .030
200 Commercial 1992 QL16V or L16V Surface Gap
200 Commercial 1993 - 2001 QL78YC (see note 3) .030
200, 225, 225HO 1994 - 2001 QL78YC (see note 3) .030
225, 250 Ficht/DI (incl. HO) 1999 & newer QC12PEP .030
E-TEC 225, 250 (incl. HO) 2005 & newer QC10PEPB .030
235 1978 - 1985 QL16V or UL77V Surface Gap
250 Ficht/DI 1999 & newer QC12PEP .030
250, 275, 300 (V8) 1985 - 1998 QL78YC (see note 3) .030
E-TEC 250 2005 & newer QC10PEPB .030
225 (4-Stroke) 2004 & newer NGK BKR6E (see note 1) .028
OMC Sea-Drive 2.5, 26 Litre 1988 - 1992 UL77V
OMC Sea-Drive 1.6, 1.8, 2.0,
2.7, 3.0 Litre 1988 - 1992 QL77JC4 (see note 3) .030
OMC Sea-Drive 3.6, 4.0 Litre 1988 - 1992 QL77JC4 (see note 3) .030
OMC Sail-Drive (Zepher) 1977 - 1984 QL8YC .045
NOTES:
1. All spark plugs are Champion brand unless otherwise specified.
2. When more than one plug number appears, the first plug listed is the prefered spark plug.
3. On ALL VRO/OMS equipped motors the "QL" supressor plug is recommended.
* This chart was assembled with the latest available Parts Catalogs, Service Manuals and Service Bulletins as of the
revision date. If any discrepencies are found, please notify the moderator.
