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| RAW WATER (OPEN) COOLING SYSTEM - RAW (RIVER, LAKE, SEA) WATER RUNS THROUGH CYLINDER BLOCK | ||||||||
| Model | Version | Identifier | Model Year | Thermostat | Seal | Gasket | Thermostat & Seal Kit | Complete Kit Thermostat Seal Gasket |
| AQ90 | 1962-1964 | NSS | 18-2933 | 18-3656 | ||||
| AQ95 | 1964-1968 | NSS | 18-2933 | 18-3656 | ||||
| AQ100 | 1961-1963 | NSS | 18-2933 | 18-3656 | ||||
| AQ130 | A. B. C. D | 1968-1977 | NSS | 18-2933 | 18-3656 | |||
| AQ115 | A. B | 1969-1975 | NSS | 18-2933 | 18-3656 | |||
| AQ140 | A | 1975-1979 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| AQ120 | B | 1977-1980 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| AQ145 | A. B | 1979-1985 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| AQ125 | A. B | 1981-1985 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| AQ131 | A. B. C. D | 1985-1989 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| 230 | A. B | 1989-1993 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| AQ151 | A. B. C | 1985-1989 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| AQ171 | A. C | 1986-1989 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| 250 | A. B | 1986-1993 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| 251 | A | 1989-1992 | NSS | 18-2933 | 18-7181 | 18-3666 | 18-3620 | |
| 3.0 GL. GS | MD.HU.NC | 1993-1996 | 18-3558 | 18-0929 | 18-2858 | 18-3670 | ||
| 3.0 GL, GL, GSR GLP. GLM | LK.BY.WT.EF | 1996-2000 | 18-3558 | NSS | 18-0164 | 18-3621 | ||
| 3.0 GLP, GLM, GSR GSM | A. B. C. D. E. J | 2000-Current | 18-3558 | NSS | 18-0164 | 18-3621 | ||
| 3.0 GXi. 3.OGXiC | J | 2009-Current | 18-3557 | NSS | 18-0164 | 18-3626 | ||
| AQ175 | 1981-1985 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | |||
| AQ205 | A | 1988-1989 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| 431 | A. B | 1989-1991 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| 430 | A. B | 1990-1991 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| 432 | A | 1992-1993 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| 434 | A | 1992-1993 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| 4.3 (All Models) | MD,HU,NC,LK, BY.WT.EF | 1993-2000 | NSS | 18-7170 | 18-2917 | 18-3677 | ||
| 4.3 (All Models) | A. B | 2001-2002 | NSS | 18-7170 | 18-2917 | 18-3677 | ||
| 4.3 (All Models) | C. D. E. F. G. J | 2002-Current | NSS | NSS | 18-2917 | 18-3615 | 18-3618 | |
| AQ190 | A | 1976-1977 | 18-3551 | 18-0398 | 18-3662 | |||
| AQ200 | B.C | 1974-1976 | 18-3551 | 18-0398 | 18-3662 | |||
| AQ225 | B.C | 1974-1976 | 18-3551 | 18-0398 | 18-3662 | |||
| AQ200 | D. F | 1977-1986 | 18-3551 | 18-0398 | 18-3662 | |||
| AQ225 | 1977-1986 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | |||
| AQ211 | A | 1986-1989 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| AQ231 | 1986-1989 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | |||
| 500 | 1989-1993 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | |||
| 501 | 1989-1993 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | |||
| 5.0 FiP, FLP | MD.HU.NC | 1993-1996 | NSS | 18-7170 | 18-2917 | 18-3677 | ||
| 5.0 GiP, GLP | BY.WT.EF | 1997-2000 | NSS | 18-7170 | 18-2917 | 18-3677 | ||
| 5.0 GL. GXi. OSi | A. B | 2001-2003 | NSS | 18-7170 | 18-2917 | 18-3677 | ||
| 5.0 (All Models) | C. D. E. F. G. H. J. K | 2002-Current | NSS | NSS | 18-2917 | 18-3615 | 18-3618 | |
| AQ271 | A. B | 1986 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| AQ260 | A. B | 1979-1985 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| AQ311 | A | 1986-1987 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| AQ271 | C | 1986-1989 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| AQ255 | A. B | 1977-1978 | 18-0398 | |||||
| 571 | A | 1989-1992 | 18-3551 | 18-2933 | 18-0398 | 18-3662 | ||
| 5.7 (All Models) | MD, HU, NC, LK. BY. WT. EF | 1993-2000 | NSS | 18-7170 | 18-2917 | 18-3677 | ||
| 5.7 (All Models Except OSi) | A. B.C | 2001-2003 | NSS | 18-7170 | 18-2917 | 18-3677 | ||
| 5.7 OSi. OSXI | B.C | 2001-2003 | NSS | NSS | 18-2917 | 18-3615 | 18-3618 | |
| 5.7 (All Models) | D. E. F. G. H. J. K | 2002-Current | NSS | NSS | 18-2917 | 18-3615 | 18-3618 | |
| 5.8 (All Models) 740 | A. B | HU, NC | 1993-1996 1991-1993 | NSS 18-3551 | 18-7170 18-2933 | 18-2917 18-0398 | 18-3677 18-3662 | |
| 7.4 (All Models) | MD, HU, NC, LK. BY. WT. EF | 1993-2000 | NSS | 18-7170 | 18-2917 | 18-3676 | ||
| 8.1 (All Models) | 2000-Current | NSS | 18-7170 | NSS | 18-3617 | |||
| 8.2 (All Models) | MD, HU, NC, LK, BY, WT, EF | 1993-2000 | NSS | 18-7170 | 18-2917 | 18-3676 | ||
| FRESHWATER (CLOSED) COOLING SYSTEM - ENGINE IS EQUIPPED WITH RESERVOIR TO HOLD ANTI-FREEZE | ||||||||
| 4.3. 5.0. 5.7 (All Models) | 1993 -Current | NSS | 18-2933 | 18-2917 | 18-3539 | 18-3619 | ||
| 5.8 (All Models) | 1993-1996 | NSS | 18-2933 | 18-2917 | 18-3539 | 18-3619 | ||
| 7.4 (All Models) | 1991 -2000 | NSS | 18-2933 | 18-2917 | 18-3539 | 18-3619 | ||
| 8.1 (All Models) | 2000-Current | NSS | 18-2933 | 18-2917 | 18-3539 | 18-3619 | ||
| 8.2 (All Models) | 1993-2000 | NSS | 18-2933 | 18-2917 | 18-3539 | 18-3619 | ||