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Marine Engine (Outboard)

JOHNSON

IHP 1R

Model	Year	Standard Plug	Gap (mm)
	1968-70	W20S-U	0.8

1.1HP

Model	Year	Standard Plug	Gap (mm)
	1946-47	W14L	0.8

1.2HP Magneto

Model	Year	Standard Plug	Gap (mm)
	1986-90	W20S-U	0.8

1.5HP

Model	Year	Standard Plug	Gap (mm)
	1968-70	W20S-U	0.8

2.0HP Excel 4, Ultra

Model	Year	Standard Plug	Gap (mm)
	1987-88	W22FS-U	0.8

2.0HP Jr Colt

Model	Year	Standard Plug	Gap (mm)
	1971-90	W20SR-U	0.8

2.0HP Aquanaut Driving Unit

Model	Year	Standard Plug	Gap (mm)
	1966-70	W14M-U	0.8

2.0HP 2R

Model	Year	Standard Plug	Gap (mm)
	1971-84	W20S-U	0.8

2.0HP 1 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1991-02	W20FPR-U	0.8

2.0HP

Model	Year	Standard Plug	Gap (mm)
	1968-70	W20S-U	0.8

2.3HP 1 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1991-02	W20FPR-U	0.8

2.5HP

Model	Year	Standard Plug	Gap (mm)
	1987-88	W22FSR	0.8

3-5.2HP Lightwin

Model	Year	Standard Plug	Gap (mm)
	1952-74	W20S-U	0.8

3.0HP

Model	Year	Standard Plug	Gap (mm)
	1952-68	W20S-U	0.8

3.0HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1989-97	W20FSR-U	0.8

3.3HP 1 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1991-03	W20FPR-U	0.8

4.0HP

Model	Year	Standard Plug	Gap (mm)
	1969-76	W20S-U	0.8
	1977-87	W20FSR-U	0.8
	1988 on	W22FSR	0.8
	1989-03	W20FSR-U	0.8

4.0HP Ultra, Excel

Model	Year	Standard Plug	Gap (mm)
	1987--88	W22FSR	0.8

4.5HP

Model	Year	Standard Plug	Gap (mm)
	1980-85	W20FSR-U	0.8

5.0HP

Model	Year	Standard Plug	Gap (mm)
	1965-68	W20S-U	0.8
	1990-02	W20FSR-U	0.8
	1998 on	W22FSR	0.8

5.0HP 4-Stroke

Model	Year	Standard Plug	Gap (mm)
	1997-03	X20FS-U	0.7

5.5HP

Model	Year	Standard Plug	Gap (mm)
	1954-64	W20S-U	0.8

6.0HP 4-Stroke

Model	Year	Standard Plug	Gap (mm)
	1997-03	X20FS-U	0.8

6.0HP Com

Model	Year	Standard Plug	Gap (mm)
	1977-02	W22FSR	0.8

6HP

Model	Year	Standard Plug	Gap (mm)
	1965-76	W20S-U	0.8

6.5HP Com

Model	Year	Standard Plug	Gap (mm)
	1981-93	W22FSR	0.8

7.5HP

Model	Year	Standard Plug	Gap (mm)
	1952-58	W20S-U	0.8

7.5HP Com

Model	Year	Standard Plug	Gap (mm)
	1977-02	W22FSR	0.8

8.0HP

Model	Year	Standard Plug	Gap (mm)
	1977-02	W20FSR-U	0.8
	1977-97	W20FSR-U	0.8

8.0HP 4-Stroke

Model	Year	Standard Plug	Gap (mm)
	1966-03	X20FS-U	0.7

8.0HP 2 Stroke

Model	Year	Standard Plug	Gap (mm)
	1988 on	W20FSR-U	0.8

8.0HP 4-Stroke SOHC

Model	Year	Standard Plug	Gap (mm)
	2002 on	X16FSR-U	0.7

9.5HP

Model	Year	Standard Plug	Gap (mm)
	1964-73	W22S-U	0.8

9.9HP

Model	Year	Standard Plug	Gap (mm)
	1974-76	W22FS-U	0.8
	1974-76	W22FS-U	0.8

9.9HP Big Bore

Model	Year	Standard Plug	Gap (mm)
	1993-02	W20FSR-U	0.8

9.9HP 4-Stroke (302cc)

Model	Year	Standard Plug	Gap (mm)
	2002-03	XU22EPR-U	0.8

9.9HP 4-Stroke (305cc)

Model	Year	Standard Plug	Gap (mm)
	1995-03	XU22EPR-U	0.8

9.9HP 2 Stroke SOHC

Model	Year	Standard Plug	Gap (mm)
	2002-03	XU22EPR-U	0.8

9.9HP 2 Stroke OHC

Model	Year	Standard Plug	Gap (mm)
	1977-01	W22FSR	0.8

10HP

Model	Year	Standard Plug	Gap (mm)
	1952-58	W20S-U	0.8
	1959-63	W22S-U	0.8

10HP Com

Model	Year	Standard Plug	Gap (mm)
	1992-93	W22FSR	0.8
	1994-03	W22FSR	0.8

14HP Com

Model	Year	Standard Plug	Gap (mm)
	1981-91	W22FSR	0.8
	1988-89	W22FSR	0.8

15HP

Model	Year	Standard Plug	Gap (mm)
	1977-92	W22FSR	0.8
	1974-76	W22FS-U	0.8
	1994-02	W22FSR	0.8

15HP Big Bore

Model	Year	Standard Plug	Gap (mm)
	1993-02	W20FSR-U	0.8

15HP Com

Model	Year	Standard Plug	Gap (mm)
	1992-93	W22FSR	0.8

15HP 4-Stroke

Model	Year	Standard Plug	Gap (mm)
	1995-03	XU22EPR-U	0.8

15HP Kero

Model	Year	Standard Plug	Gap (mm)
	1995-02	SF10	0.0

18HP

Model	Year	Standard Plug	Gap (mm)
	1995-02	W22S-U	0.8

18HP Jet (25HP)

Model	Year	Standard Plug	Gap (mm)
	1995-02	W22FSR	0.8

20HP

Model	Year	Standard Plug	Gap (mm)
	1978-02	W22FSR	0.8
	1966-73	W22S-U	0.8

25HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1977-98	W22FSR	0.8

25HP

Model	Year	Standard Plug	Gap (mm)
	1969-76	W22S-U	0.8
	1977	W22FSR	0.8
	1978-02	W22FSR	0.8

25HP Com

Model	Year	Standard Plug	Gap (mm)
	1981-02	SF24	0.0

25HP 3 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1995-97	W20FSR-U	0.8
	1998-02	W22FSR	0.8

25HP 4-Stroke

Model	Year	Standard Plug	Gap (mm)
	2000-02	XU20EPR-U	0.8

28HP

Model	Year	Standard Plug	Gap (mm)
	1962-64	W22S-U	0.8

28HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1978-02	W22FSR	0.8

28HP Jet 40HP

Model	Year	Standard Plug	Gap (mm)
	1992-03	W24FPR-U10	1.0

30HP

Model	Year	Standard Plug	Gap (mm)
	1956-71	W22FSR	0.8

30HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1978-02	W22FSR	0.8

30HP 4-Stroke

Model	Year	Standard Plug	Gap (mm)
	2000-03	XU20EPR-U	0.8

33HP

Model	Year	Standard Plug	Gap (mm)
	1965-71	W22S-U	0.8

35HP

Model	Year	Standard Plug	Gap (mm)
	1957-59	W22FS-U	0.8
	1976	W22FS-U	0.8

35HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1977-02	W22FSR	0.8

35HP 3 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1995-97	W20FSR-U	0.8
	1998-02	W22FSR	0.8

35HP Jet 50HP

Model	Year	Standard Plug	Gap (mm)
	1993-03	W24FPR-U10	1.0

40HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1980-88	SF51	0.0
	1989-02	W24FPR-U10	1.0

40HP

Model	Year	Standard Plug	Gap (mm)
	1960-73	W22S-U	0.8
	1974-76	W22FS-U	0.8

40HP Com - 43 cu.in

Model	Year	Standard Plug	Gap (mm)
	1981-90	W22FS-U	0.8

40HP Com - 45 cu.in

Model	Year	Standard Plug	Gap (mm)
	1984-03	SF10	0.0

40HP 4-Stroke 815cc

Model	Year	Standard Plug	Gap (mm)
	1999-03	XU22EPR-U	0.8

45HP Com

Model	Year	Standard Plug	Gap (mm)
	1986-90	SF51	0.0
	1991-02	SF10	0.0

48HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1980-88	SF51	0.0
	1989-02	W22FPR-U	0.8

50HP

Model	Year	Standard Plug	Gap (mm)
	1971-75	W22FS-U10	1.0

50HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1980-88	SF51	0.0
	1989-02	W24FPR-U10	1.0

50HP 3 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1995-02	W24FPR-U10	1.0

50HP 4-Stroke 815cc

Model	Year	Standard Plug	Gap (mm)
	1999-02	XU22EPR-U	0.8

55HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1976-89	SF51	0.0

55HP 3 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1968-69	SF51	0.0

55HP Com

Model	Year	Standard Plug	Gap (mm)
	1986-03	SF10	0.0

60HP 2 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1980-85	SF51	0.0

60HP 3 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1970-71	SF50	0.0

60HP 3 Cyl. 49 cu.in

Model	Year	Standard Plug	Gap (mm)
	1975-89	W22FSR	0.8

60HP 3 Cyl. 56 cu.in

Model	Year	Standard Plug	Gap (mm)
	1989-93	W22FSR	0.8
	1994-02	W24FPR-U10	1.0

60HP 4-Stroke

Model	Year	Standard Plug	Gap (mm)
	2002-03	W20EPR-U	0.8

60HP V4

Model	Year	Standard Plug	Gap (mm)
	1964-67	W22S-U	0.8

65HP V4

Model	Year	Standard Plug	Gap (mm)
	1968	SF50	0.0

65HP 3 Cyl.

Model	Year	Standard Plug	Gap (mm)
	1972-73	W22FS-U	0.8

65HP Com HC LC

Model	Year	Standard Plug	Gap (mm)
	1984-87	SF51	0.0
	1988-03	SF10	0.0

65HP Jet 90â€ Cross V

Model	Year	Standard Plug	Gap (mm)
	1992-02	W22FSR	0.8

70HP 3 Cyl. 49 cu.in

Model	Year	Standard Plug	Gap (mm)
	1975-89	W22FSR	0.8

70HP 3 Cyl. 56 cu.in

Model	Year	Standard Plug	Gap (mm)
	1989-93	W22FSR	0.8
	1994-02	W24FPR-U10	1.0

70HP 4-Stroke

Model	Year	Standard Plug	Gap (mm)
	1998-02	W20EPR-U	0.8

75HP 3 Cyl. 49 cu.in

Model	Year	Standard Plug	Gap (mm)
	1975-89	W22FSR	0.8

75HP V4

Model	Year	Standard Plug	Gap (mm)
	1960-65	W22S-U	0.8

80HP Jet 88, 90, 110, 112, 115

Model	Year	Standard Plug	Gap (mm)
	1979-02	W22FSR	0.8

80HP 1966-67

Model	Year	Standard Plug	Gap (mm)
	1966-67	W22S-U	0.8

85HP

Model	Year	Standard Plug	Gap (mm)
	1968-72	SF51	0.0
	1973-80	W22FS-U10	1.0
	1986-93	W22FSR	0.8
	1994-95	W20FSR-U	0.8

90HP

Model	Year	Standard Plug	Gap (mm)
	1964-65	W22S-U	0.8

90HP 115 - 60â€ Loop V

Model	Year	Standard Plug	Gap (mm)
	1995-02	W24FPR-U10	1.0

90HP 115 Turbojet 90â€ Cross V

Model	Year	Standard Plug	Gap (mm)
	1994-02	W22FSR	0.8

90HP LV4 Ficht

Model	Year	Standard Plug	Gap (mm)
	1998-03	PKJ16CR8	0.8

90HP 1950cc

Model	Year	Standard Plug	Gap (mm)
	2003 on	K20PR-U	0.8

100HP

Model	Year	Standard Plug	Gap (mm)
	1966	W22S-U	0.8
	1967-72	SF51	0.0

100HP Com

Model	Year	Standard Plug	Gap (mm)
	1984-02	SF24	0.0

105HP Jet 60â€ Loop V

Model	Year	Standard Plug	Gap (mm)
	1993-03	W24FPR-U10	1.0

105HP Com 60â€ L00p V

Model	Year	Standard Plug	Gap (mm)
	1997-03	W24FPR-U10	1.0

115HP

Model	Year	Standard Plug	Gap (mm)
	1969-70	SF51	0.0
	1973-79	SF24	0.0

115HP CV4

Model	Year	Standard Plug	Gap (mm)
	1979-98	W22FSR	0.8

115HP LV4 Ficht

Model	Year	Standard Plug	Gap (mm)
	1998-03	PKJ16CR8	0.8

120HP 90â€ Loop V

Model	Year	Standard Plug	Gap (mm)
	1985-03	W24FPR-U10	1.0

125HP

Model	Year	Standard Plug	Gap (mm)
	1971-72	SF50	0.0

130HP 90Â° LoopV

Model	Year	Standard Plug	Gap (mm)
	1985-03	W24FPR-U10	0.8

135HP

Model	Year	Standard Plug	Gap (mm)
	1973-84	SF24	0.0

140HP

Model	Year	Standard Plug	Gap (mm)
	1973-84	SF24	0.0

140HP 90â€ Loop V

Model	Year	Standard Plug	Gap (mm)
	1985-03	W24FPR-U10	1.0

150HP Com 60â€ Loop V

Model	Year	Standard Plug	Gap (mm)
	1993-02	W24FPR-U10	1.0

150HP 60â€ Loop V

Model	Year	Standard Plug	Gap (mm)
	1991-02	W24FPR-U10	1.0

150HP 90â€ Cross V

Model	Year	Standard Plug	Gap (mm)
	1978-87	SF24	0.0
	1988-91	W22FSR	0.8

150HP LV6 Ficht

Model	Year	Standard Plug	Gap (mm)
	1997-03	PKJ16CR8	0.8

155HP 90â€ Cross V

Model	Year	Standard Plug	Gap (mm)
	1978-87	SF24	0.0

155HP Com 90â€ Cross V

Model	Year	Standard Plug	Gap (mm)
	1989-92	SF24	0.0

175HP

Model	Year	Standard Plug	Gap (mm)
	1977-87	SF24	0.0

175HP 90â€ Cross V

Model	Year	Standard Plug	Gap (mm)
	1988-91	W22FSR	0.8

175HP 60â€ Loop V

Model	Year	Standard Plug	Gap (mm)
	1991-02	W24FPR-U10	1.0

175HP LV6 Ficht

Model	Year	Standard Plug	Gap (mm)
	1998-03	PKJ16CR8	0.8

185HP

Model	Year	Standard Plug	Gap (mm)
	1977-87	SF24	0.0

185HP Com

Model	Year	Standard Plug	Gap (mm)
	1990-93	SF24	0.0

200HP

Model	Year	Standard Plug	Gap (mm)
	1976-83	SF24	0.0
	1986-93	W22FSR	0.8
	1994-02	W24FPR-U10	1.0

200HP Com

Model	Year	Standard Plug	Gap (mm)
	1992	SF24	0.0
	1993-02	W24FPR-U10	1.0

200HP LV6 Ficht

Model	Year	Standard Plug	Gap (mm)
	1999-03	PKJ16CR8	0.8

200HP Venom LV6

Model	Year	Standard Plug	Gap (mm)
	1994-03	W24FPR-U10	1.0

225HP

Model	Year	Standard Plug	Gap (mm)
	1986-03	W22FSR	1.0
	1994-02	W24FPR-U10	1.0

225HP LV6 Ficht

Model	Year	Standard Plug	Gap (mm)
	1999-03	PKJ16CR8	0.8

225HP Venom LV6

Model	Year	Standard Plug	Gap (mm)
	1994-03	W24FPR-U10	0.8

235HP

Model	Year	Standard Plug	Gap (mm)
	1978-85	SF24	0.0

250HP LV6 Fict

Model	Year	Standard Plug	Gap (mm)
	2000-03	PKJ16CR8	0.8

250HP, 300HP V8

Model	Year	Standard Plug	Gap (mm)
	1985-02	W24FPR-U10	1.0

275HP

Model	Year	Standard Plug	Gap (mm)
	1985-88	W24FPR-U10	1.0

3.6L

Model	Year	Standard Plug	Gap (mm)
	1985-86	W22FSR	0.8

OMC Sea Drive

Model	Year	Standard Plug	Gap (mm)
	1988-92	W22FSR	0.8

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