Mercury Mariner Outboard Lower Unit Gearcase Seal
Sealing the gear oil inside the gearcase, and keeping water from intruding into the gearcase are the two aims of all the shaft seals, O-rings, spaghetti seals and gaskets in a lower unit. When you check your gear oil as a part of regular inspection, if you find the oil to be milky, it means water has been introduced somewhere. A seal kit and fresh gear oil will put you back in the safe zone. Need other parts? If you need parts not listed in the application guide, please see: |
Model | Model Notes | Origin | Serial No. Range | Lower Unit Seal Kit |
---|---|---|---|---|
2.5 | 0A855097 & up | 27-95220A 3 | ||
2.5 (4-Stroke) | JPN | 0R131842 & up | ||
3 | 0A855097 & up | 27-95220A 3 | ||
3.3 | Non-shift | 0D901217 & up | 27-95220A 3 | |
3.3 | Shift | 0D901217 & up | 27-95220A 3 | |
3.5 | Water-cooled | USA | 6202173 & up | Obsolete |
3.5 (4-Stroke) | JPN | 0R131842 & up | ||
3.6 | Water-cooled | USA | 5404657 & up | Obsolete |
BEL | 9252831 & up | |||
CAN | 7145388 & up | |||
4 | 1-Cylinder | USA | 5595532 - 0A809600 | 26-77066A 1 |
AUS | 8068065 & up | |||
BEL | 9258281 - 9477829 | |||
CAN | 7143688 & up | |||
4 | 1-Cylinder | USA | 0A855097 - 0G710612 | |
BEL | 9589154 - 0P016999 | |||
4 | 2-Cylinder | USA | 5589202 - 5595531 | Obsolete |
AUS | 8065265 - 8068064 | |||
BEL | 9256981 - 9258280 | |||
CAN | 7146488 - 7143687 | |||
4 (4-Stroke) | JPN | 0R000001 & up | ||
BEL | 0P073456 & up | |||
4.5 | 1-Cylinder | USA | 4107220 - 0A809600 | 26-77066A 1 |
AUS | 8026540 & up | |||
BEL | 9072179 - 9477829 | |||
CAN | 7045758 & up | |||
5 | 1-Cylinder | USA | 0A855097 & up | |
BEL | 9589154 & up | |||
5 (4-Stroke) | JPN | 0R000001 & up | ||
BEL | 0P073456 & up | |||
6 | USA | 0A197112 - 0T800749 | 26-41365A 3 | |
BEL | 9461526 & up | |||
6 (4-Stroke) | JPN | 0R000001 & up | ||
BEL | 0P073456 & up | |||
7.5 | (7.5, 75) | USA | 4851693 - 0A197111 | 26-77066A 1 |
AUS | 8051350 & up | |||
BEL | 9181726 - 9461525 | |||
CAN | 7111898 & up | |||
8 | USA | 0A197112 & up | 26-41365A 3 | |
BEL | 9461526 & up | |||
8 (4-Stroke) | USA | 0H000058 - 0H017349 | 26-41365A 3 | |
8 (4-Stroke) | USA | 0G760300 - 0T178499 | 26-41365A 3 | |
BEL | 0P086824 - 0P325499 | |||
8 (4-Stroke) | JPN | 0R042475 & up | ||
BEL | 0P325500 & up | |||
9.8 | (9.8, 110) | USA | 4839254 - 0A197111 | 26-77066A 1 |
AUS | 8050625 & up | |||
BEL | 9165303 - 9461525 | |||
CAN | 7111348 & up | |||
9.9 | USA | 0A197112 & up | 26-41365A 3 | |
BEL | 9461526 & up | |||
9.9 (4-Stroke) | USA | 0H000058 - 0H017349 | 26-41365A 3 | |
9.9 (4-Stroke) | (Standard gearcase) | USA | 0G760300 - 0T979999 | 26-41365A 3 |
9.9 (4-Stroke) | (Bigfoot gearcase) | USA | 0G760300 - 0T979999 | 26-85090A 2 |
BEL | 0P075166 - 0P325499 | |||
9.9 (4-Stroke) | (Standard gearcase) | JPN | 0R042475 & up | |
BEL | 0P325500 & up | |||
9.9 (4-Stroke) | (Bigfoot gearcase) | JPN | 0R042475 & up | |
BEL | 0P325500 & up | |||
10 | (XR 10 / Sea Pro 10) | USA | 0D038000 & up | 26-41365A 3 |
BEL | 9596000 & up | |||
10 | Magnum / Marathon | USA | 0D038000 & up | 26-41365A 3 |
BEL | 9596000 & up | |||
15 | (15, 15 Sea Pro / Marathon) | USA | 0B292414 & up | 26-41365A 3 |
BEL | 9542620 & up | |||
15 | (15XD Sea Pro / Marathon) | BEL | 9927000 & up | 26-85090A 2 |
15 | Super 15 | USA | 0B238464 & up | 26-85090A 2 |
BEL | 9507381 & up | |||
CAN | 0A730007 & up | |||
15 (4-Stroke) | (Standard gearcase) 323 cc | USA | 0G590000 & up | 26-41365A 3 |
BEL | 0P075166 & up | |||
15 (4-Stroke) | (Bigfoot gearcase) 323 cc | USA | 0G590000 & up | 26-85090A 2 |
BEL | 0P075166 & up | |||
15 (4-Stroke) | 351 cc | JPN | 0R235949 & up | |
18 | USA | 5837437 - 6443972 | Obsolete | |
8071973 & up | ||||
BEL | 9308306 - 9415100 | |||
CAN | 7173723 - 7209532 | |||
18 | (18XD) | USA | 6443973 & up | 26-85090A 2 |
BEL | 9378151 & up | |||
CAN | 7209533 & up | |||
20 | (20, 200) | USA | 4709593 - 6443972 | 26-66303A 1 |
AUS | 8045199 & up | |||
BEL | 9157230 - 9415100 | |||
CAN | 7098523 - 7209532 | |||
20 | (20, 20XD) | USA | 6443973 - 0T800749 | 26-85090A 2 |
BEL | 9415101 & up | |||
CAN | 7209533 & up | |||
20 (4-Stroke) | JPN | 0R235168 & up | ||
25 | USA | 5705532 - 6443972 | Obsolete | |
8073158 & up | ||||
BEL | 9315316 - 9415100 | |||
CAN | 7166928 - 7209532 | |||
25 (25, 25XD) | (25, 25XD) | USA | 6416713 & up | 26-85090A 2 |
BEL | 9378116 & up | |||
CAN | 7207858 & up | |||
25 | 3-Cylinder Lightning | USA | 0E268781 & up | 26-85090A 2 |
25 (4-Stroke) | USA | 0G590000 - 0T408999 | ||
BEL | 9973100 - 0P153499 | |||
25 (4-Stroke) | Carb models | USA | 0T409000 - 1B226999 | |
BEL | 0P153500 - 0P400999 | |||
25 (4-Stroke) | EFI models | JPN | 0R106999 & up | |
BEL | 0P401000 & up | |||
30 | 2-Cylinder | USA | 0G053314 - 0T800759 | |
BEL | 9854537 - 0P267999 | |||
30 | 430 cc Lightning | USA | 0G575500 & up | |
30 (4-Stroke) | 3-Cylinder (Standard gearcase) | USA | 0G760300 - 0T408999 | |
BEL | 0P094500 - 0P153499 | |||
30 (4-Stroke) | 3-Cylinder (Standard gearcase) | USA | 0T409000 - 1B226999 | |
BEL | 0P153500 - 0P400999 | |||
30 (4-Stroke) | 3-Cylinder (Bigfoot gearcase) | USA | 0G760300 - 0T408999 | 26-43035A 4 |
BEL | 0P094500 - 0P153499 | |||
30 (4-Stroke) | 3-Cylinder (Bigfoot gearcase) | USA | 0T409000 - 1B226999 | |
BEL | 0P153500 - 0P400999 | |||
30 (4-Stroke) | EFI models | JPN | 0R106999 & up | |
BEL | 0P401000 & up | |||
35 | 2-Cylinder | USA | 6445653 & up | 26-79831A 1 |
BEL | 9384476 & up | |||
CAN | 7209608 & up | |||
40 | 2-Cylinder | USA | 4860103 - 6445652 | 26-79831A 1 |
AUS | 8052125 & up | |||
BEL | 9184451 - 9415100 | |||
CAN | 7112423 - 7209608 | |||
40 | 2-Cylinder | USA | 0G053314 - 0T800749 | |
BEL | 9854537 - 0P267999 | |||
40 | 3-Cylinder | USA | 0G531301 & up | |
BEL | 9973100 & up | |||
40 | 4-Cylinder | USA | 0C159200 - 0G589999 | 26-79831A 1 |
BEL | 9570790 - 9973099 | |||
40 (4-Stroke) | 3-Cylinder (Standard gearcase) | USA | 0G760300 - 0T408999 | |
BEL | 0P094500 - 0P153499 | |||
40 (4-Stroke) | 3-Cylinder (Standard gearcase) | USA | 0T409000 - 1B226999 | |
BEL | 0P153500 - 0P400999 | |||
40 (4-Stroke) | 3-Cylinder (Bigfoot gearcase) | USA | 0G760300 - 0T408999 | 26-43035A 4 |
BEL | 0P094500 - 0P153499 | |||
40 (4-Stroke) | 3-Cylinder (Short shaft) | USA | 1B227000 - 1B344398 | |
BEL | 0P153500 - 0P515896 | |||
CHN | 1C000001 - 1C049738 | |||
40 (4-Stroke) | 3-Cylinder (Long shaft) | CHN | 1C000001 - 1C049738 | 26-814669A 2 |
BEL | 0P401000 - 0P515896 | |||
40 (4-Stroke) | 3-Cylinder | CHN | 1C049739 & up | 26-814669A 2 |
40 (4-Stroke) | 4-Cylinder Carb (Standard gearcase) Vertical shift | USA | 0G231123 - 0T598999 | |
BEL | 9944807 - 0P106999 | |||
40 (4-Stroke) | 4-Cylinder Carb (Standard gearcase) Rotary shift | USA | 0T178500 - 0T598999 | 26-814669A 2 |
BEL | 0P094500 - 0P206999 | |||
40 (4-Stroke) | 4-Cylinder Carb (Bigfoot gearcase) | USA | 0G231123 - 0T598999 | 26-43035A 4 |
BEL | 9944807 - 0P206999 | |||
40 (4-Stroke) | 4-Cylinder EFI (Standard gearcase) | USA | 0T409000 - 1B344306 | 26-814669A 2 |
BEL | 0P153500 & up | |||
CHN | 1C000001 & up | |||
40 (4-Stroke) | 4-Cylinder EFI (Bigfoot gearcase) | USA | 0T409000 - 1B344306 | |
BEL | 0P153500 & up | |||
CHN | 1C000001 - 1C033810 | |||
40 (4-Stroke) | 4-Cylinder EFI (Bigfoot gearcase) | CHN | 1C033811 - 1C050251 | 26-43035A 4 |
40 (4-Stroke) | 4-Cylinder EFI (Bigfoot gearcase) | CHN | 1C050252 & up | |
45 | 4-Cylinder | USA | 5531630 & up | 26-79831A 1 |
AUS | 8063985 & up | |||
BEL | 9248006 & up | |||
CAN | 7143688 & up | |||
45 (4-Stroke) | 4-Cylinder (Standard gearcase) | USA | 0G231123 - 0T178499 | |
BEL | 9944807 - 0P094499 | |||
45 (4-Stroke) | 4-Cylinder (Bigfoot gearcase) | USA | 0G231123 - 0T178499 | 26-43035A 4 |
BEL | 9944807 - 0P094499 | |||
50 | 4-Cylinder | USA | 4357640 & up | 26-79831A 1 |
CAN | 7068998 & up | |||
AUS | 8030090 & up | |||
BEL | 9107214 & up | |||
50 | 3-Cylinder | USA | 6428681 - 0D000749 | 26-79831A 1 |
BEL | 9385911 - 9683054 | |||
CAN | 7208333 & up | |||
50 | 3-Cylinder | USA | 0D000750 - 0G589999 | 26-814669A 2 |
BEL | 9683055 - 9973099 | |||
50 | 3-Cylinder | USA | 0G590000 & up | |
BEL | 9973100 & up | |||
50 (4-Stroke) | 4-Cylinder Carb (Standard gearcase) | USA | 0G231123 - 0T178499 | |
BEL | 9944807 - 0P016999 | |||
50 (4-Stroke) | 4-Cylinder Carb (Standard gearcase) | USA | 0T178500 - 0T598999 | 26-814669A 2 |
BEL | 0P094500 - 0P206999 | |||
50 (4-Stroke) | 4-Cylinder Carb (Bigfoot gearcase) | USA | 0G231123 - 0T598999 | 26-43035A 4 |
BEL | 9944807 - 0P206999 | |||
50 (4-Stroke) | 4-Cylinder EFI (Standard gearcase) | USA | 0T409000 - 1B344306 | 26-814669A 2 |
BEL | 0P153500 & up | |||
CHN | 1C000001 & up | |||
50 (4-Stroke) | 4-Cylinder EFI (Bigfoot gearcase) | USA | 0T409000 - 1B344306 | |
BEL | 0P153500 - 0P400999 | |||
BEL | 0P515897 & up | |||
CHN | 1C000001 - 1C033810 | |||
CHN | 1C050252 & up | |||
50 (4-Stroke) | 4-Cylinder EFI (Bigfoot gearcase) | CHN | 1C033811 - 1C050251 | 26-43035A 4 |
55 | 3-Cylinder | USA | 0D000750 & up | 26-814669A 2 |
BEL | 9683055 & up | |||
60 | 3-Cylinder | USA | 6428681 - 0D000749 | 26-79831A 1 |
BEL | 9385911 - 9683054 | |||
CAN | 7208333 & up | |||
60 | 3-Cylinder (Standard gearcase) | USA | 0D000750 & up | 26-814669A 2 |
BEL | 9683055 & up | |||
60 | 3-Cylinder (Bigfoot gearcase) | USA | 0D000750 & up | 26-43035A 4 |
BEL | 9683055 & up | |||
60 (4-Stroke) | 4-Cylinder Carb (Standard gearcase) | USA | 0T178500 - 0T598999 | 26-814669A 2 |
BEL | 0P094500 - 0P206999 | |||
60 (4-Stroke) | 4-Cylinder Carb (Bigfoot gearcase) | USA | 0T178500 - 0T598999 | 26-43035A 4 |
BEL | 0P094500 - 0P206999 | |||
60 (4-Stroke) | 4-Cylinder EFI (Standard gearcase) | USA | 0T409000 - 1B344306 | 26-814669A 2 |
BEL | 0P153500 & up | |||
CHN | 1C000001 & up | |||
60 (4-Stroke) | 4-Cylinder EFI (Bigfoot gearcase) | USA | 0T409000 - 1B344306 | |
BEL | 0P153500 - 0P400999 | |||
BEL | 0P515897 & up | |||
CHN | 1C000001 - 1C033810 | |||
CHN | 1C050252 & up | |||
60 (4-Stroke) | 4-Cylinder EFI (Bigfoot gearcase) | CHN | 1C033811 - 1C050251 | 26-43035A 4 |
70 | 3-Cylinder | USA | 4571652 - 0A996141 | 26-79831A 1 |
AUS | 8042350 & up | |||
BEL | 9135825 - 9385910 | |||
CAN | 7087823 - 7208332 | |||
70 | 3-Cylinder | USA | 0A996142 & up | 26-43035A 4 |
BEL | 9483121 & up | |||
75 | 3-Cylinder | USA | 0C222000 & up | 26-43035A 4 |
BEL | 9589039 & up | |||
75 Optimax | 3-Cylinder | USA | 0T980000 & up | 26-43035A 4 |
75 | 4-Cylinder | USA | 6432901 - 0B122929 | 26-55682A 1 |
BEL | 9393856 - 9469199 | |||
CAN | 7208573 - 0A721307 | |||
75 (4-Stroke) | USA | 0G960500 - 1B366822 | 26-43035A 4 | |
BEL | 0P094500 - 1B366822 | |||
80 | 4-Cylinder | USA | 4831999 - 6432900 | 26-55682A 1 |
AUS | 8050200 & up | |||
BEL | 9177626 - 9393855 | |||
CAN | 7110998 - 7208572 | |||
80 | 3-Cylinder | USA | 0A996142 - 0C221999 | 26-43035A 4 |
BEL | 9483121 - 9589038 | |||
90 | 6-Cylinder | USA | 4845301 - 0A996141 | 26-55682A 1 |
CAN | 7111698 & up | |||
AUS | 8060545 & up | |||
90 | 3-Cylinder | USA | 0A996142 & up | 26-43035A 4 |
BEL | 9483121 & up | |||
90 Optimax | 3-Cylinder | USA | 0T980000 & up | 26-43035A 4 |
90 (4-Stroke) | USA | 0G960500 - 1B366822 | 26-43035A 4 | |
BEL | 0P094500 - 1B366822 | |||
100 | 4-Cylinder | USA | 0B209468 - 0G960499 | 26-43035A 4 |
BEL | 9523034 - 0P058999 | |||
115 | 6-Cylinder | USA | 4855153 & up | 26-55682A 1 |
AUS | 8051950 & up | |||
CAN | 7112248 & up | |||
115 | 4-Cylinder | USA | 0C100000 & up | 26-43035A 4 |
BEL | 9559771 & up | |||
115 Optimax | 3-Cylinder | USA | 0T801000 & up | 26-43035A 4 |
115 | EFI | USA | 0T178500 - 1B366822 | 26-43035A 4 |
(4-Stroke) | ||||
125 | 4-Cylinder | USA | 0D283222 & up | 26-43035A 4 |
BEL | 9793577 & up | |||
140 | 6-Cylinder (140, 1400) | USA | 4865678 & up | 26-55682A 1 |
AUS | 8052650 & up | |||
CAN | 7112773 & up | |||
V-135 | USA | 0A904646 - 0C239552 | 26-89238A 2 | |
V-135 | USA | 0C239553 & up | 26-89238A 2 | |
V-135 Optimax DFI | USA | 0G590000 & up | 26-89238A 2 | |
135 Verado | USA | 1B227000 & up | 26-830749A01 | |
V-150 | (150, 1500) | USA | 4868998 - 0A904645 | 26-55682A 1 |
V-150 | Carb | USA | 0A904646 & up | 26-89238A 2 |
V-150 | (XR4 / Magnum II) | USA | 0B242885 - 0C239552 | 26-89238A 2 |
V-150 | (XR4) | USA | 0C239553 - 0D081999 | 26-89238A 2 |
V-150 | (XR6 / Magnum III) | USA | 0D082000 & up | 26-89238A 2 |
V-150 | EFI | USA | 0D082000 & up | 26-89238A 2 |
V-150 Optimax DFI | USA | 0G590000 & up | 26-89238A 2 | |
150 Verado | USA | 1B227000 & up | 26-830749A01 | |
V-175 | (175, 1750) | USA | 4301235 - 6618750 | 26-55682A 1 |
V-175 | (175, 1750) | AUS | 8058870 & up | 26-55682A 1 |
V-175 | Carb, EFI | USA | 6618751 & up | 26-89238A 2 |
V-175 Optimax DFI | USA | 0T178500 & up | 26-89238A 2 | |
175 Verado | USA | 1B227000 & up | 26-830749A01 | |
V-200 | (200, 2000) | USA | 4839034 - 6625220 | 26-55682A 1 |
V-200 | (200, 2000) | AUS | 8061595 & up | 26-55682A 1 |
V-200 | (2.5L) Carb, EFI | USA | 6625221 & up | 26-89238A 2 |
V-200 | (3.0L) EFI | USA | 0T801000 & up | 26-816575A 4 |
V-200 Optimax | (3.0L) DFI (C-2 casting) | USA | 0G386496 - 0G437999 | 26-816575A 5 |
V-200 Optimax | (3.0L) DFI (C-3 casting) | USA | 0G386496 - 0G437999 | 26-816575A 4 |
V-200 Optimax (3.0L) DFI | USA | 0G438000 - 1B504988 | 26-816575A 4 | |
200 Verado | 4- & 6-Cylinder | USA | 0T980000 & up | 26-830749A01 |
V-220 | USA | 0B117316 - 0C100860 | 26-89238A 2 | |
V-225 | USA | 5628028 - 6042945 | 26-55682A 1 | |
V-225 | (3.0L) (C-2 casting) | USA | 0D280813 - 0G437999 | 26-816575A 5 |
V-225 | (3.0L) (C-3 casting) | USA | 0D280813 - 0G437999 | 26-816575A 4 |
V-225 | (3.0L) | USA | 0G438000 & up | 26-816575A 4 |
V-225 | (3.0L) EFI (C-2 casting) | USA | 0G129222 - 0G437999 | 26-816575A 5 |
V-225 | (3.0L) EFI (C-3 casting) | USA | 0G129222 - 0G437999 | 26-816575A 4 |
V-225 | (3.0L) EFI | USA | 0G438000 - 1B504988 | 26-816575A 4 |
V-225 Optimax (3.0L) DFI | USA | 0G590000 - 1B504988 | 26-816575A 4 | |
V-225 (4-Stroke) | USA | 0T653945 - 0T800999 | ||
V-225 (4-Stroke) | USA | 0T801000 & up | ||
225 Verado | USA | 0T980000 & up | 26-830749A01 | |
V-250 | (3.0L) EFI (C-2 casting) | USA | 0G129222 - 0G437999 | 26-816575A 5 |
V-250 | (3.0L) EFI (C-3 casting) | USA | 0G129222 - 0G437999 | 26-816575A 4 |
V-250 | (3.0L) EFI | USA | 0G438000 - 1B504988 | 26-816575A 4 |
250 Verado | USA | 0T980000 & up | 26-830749A01 | |
275 Verado | USA | 0T980000 & up | 26-830749A01 | |
300 Verado | USA | 1B517434 & up | 26-830749A01 |