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Mercruiser complete Sterndrives, Outdrives and Lower Gearcase units. Merc I , Alpha One, Alpha One Gen II and Bravo Drives

Here at MARINEPARTS.COM we offer a complete line of factory remanufactured sterndrives, outdrives , Upper and lower gear cases. All our gearcases are remanufactured by our factory trained marine technicians. That is why every unit that we sell comes complete with a industry leading 15 month limited warranty. All units are inspected before they are packaged and shipped. We ship our gearcases worldwide and we standby our warranty. Try to locate the unit you are looking for then fill out the info form to send us your units specifications or call us for help. We need model, year and serial number of your old unit to ensure you're selecting the correct unit. Our chief technician will review your info and guarantee that the unit you order is the correct one!

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 800-680-0389

Mercruiser Gearcases
Alpha Lower units
15 month warranty


Mercruiser Gearcases
Alpha Complete units
15 month warranty

FOR A DISCOUNTED QUOTE ON YOUR PARTS, FILL OUT OUR INFO FORM

MERCRUISER GEARCASES

DRIVE ASSEMBLIES
MERCRUISER COMPLETE DRIVE ASSEMBLIES
PART # HORSEPOWER DESCRIPTION YEAR RATIO & TEETH #
SW-101A 120 thru 140 4 cyl. One drive 1971 thru 79 1.98 / 20-24
SW-101B 120 thru 140 4 cyl. One drive 1980 thru 84 1.98 / 20-24
SW-102A 170 thru 190 4 cyl. One drive 1971 thru 79 1.84 / 17-19
SW-102B 170 thru 190 4 cyl. One drive 1980 thru 84 1.84 / 17-19
SW-103A 165 6 cylinder 1971 thru 79 1.65 / 24-24
SW-103B 165 6 cylinder 1980 thru 84 1.65 / 24-24
SW-104A 188 thru 260 V-8 1971 thru 79 1.5 / 20-22
SW-104B 188 thru 260 V-8 1980 thru 84 1.5 / 20-22
SW-105A 120 & 140 Alpha 4 cylinder 1985 thru 89 1.98 / 20-24
SW-105B 120 & 140 Alpha 4 cyl (New) **1985 thru 89 1.98 / 20-24
SW-106A 170 thru 190 Alpha 4 cylinder 1985 thru 89 1.84 / 17-19
SW-106B 170 thru 190 Alpha 4 cyl (New) **1985 thru 89 1.84 / 17-19
SW-107A 198 Alpha V-8 1985 thru 89 1.65 / 24-24
SW-107B 198 Alpha V-8 (New) **1985 thru 89 1.65 / 24-24
SW-108A 198 thru 260 Alpha V-8 1985 thru 89 1.5 / 20-22
SW-108B 198 thru 260 Alpha V-8 (New) **1985 thru 89 1.5 / 20-22
SW-109A 120 & 140 Gen 2 4 cylinder 1990 thru pr 1.98 / 20-24
SW-109B 175 & 4.3 Gen 2 V-6 1990 thru pr 1.84 / 17-19
SW-109C 198 Alpha V-8 1990 thru pr 1.65 / 24-24
SW-109D 198 thru 260 Gen 2 V-8 1990 thru pr 1.5 / 20-22
SW-BRAVO All engines Special order 1986 thru pr See uppers & lowers
LOWER GEARCASE DRIVES
MERCRUISER LOWER DRIVE ASSEMBLIES
PART # HORSEPOWER DESCRIPTION YEAR DETAILS & NOTES
SW-111A 120 thru 228 One drive 1971 thru 79 Note: 260hp use 113A
SW-112A 120 thru 228 One drive 1980 thru 84 Note: 260hp use 113A
SW-113A 120 thru 260 Alpha drive 1985 thru 89 Standard rotation
SW-113B  120 thru 260 **New Alpha  1985 thru 89 Standard rotation

LOWER GEARCASE DRIVES

MERCRUISER LOWER DRIVE ASSEMBLIES

PART # HORSEPOWER DESCRIPTION YEAR DETAILS & NOTES
SW-113CR 120 thru 260 Alpha drive 1985 thru 89 Counter rotation
SW-114A 120 thru 260 Generation 2 1990 thru pr Standard rotation
SW-114CR 120 thru 260 Generation 2 1990 thru pr Counter rotation
SW-115A All engines Bravo 1 1986 thru 89 Short housing
SW-115B All engines Bravo 1 1990 Long housing
SW-115C All engines Bravo 1 1991 thru pr Long with oil hole
SW-116A All engines Bravo 2 1990 Large drive
SW-117A All engines Bravo 3 1991 thru pr Daul propeller

UPPER GEARCASE DRIVES

MERCRUISER UPPER DRIVE ASSEMBLIES

PART # HORSEPOWER DESCRIPTION YEAR DETAILS & TEETH #
SW-120A All engines Bravo upper 1986 No oil reservoir / 27-32
SW-120B All engines Bravo upper 1987 thru 90 Oil reservoir / 27-29
SW-120C All engines Bravo upper 1991 thru pr Oil transfer hole / 23-30
SW-120D All engines Bravo upper 1986 No oil reservoir / 27-32
SW-120E All engines Bravo upper 1987 thru 90 Oil reservoir / 27-29
SW-120F All engines Bravo upper 1991 thru pr Oil transfer hole / 23-30
SW-120G All engines Bravo upper 1986 No oil reservoir / 27-32
SW-120H All engines Bravo upper 1987 thru 90 Oil reservoir / 27-29
SW-120I All engines Bravo upper 1991 thru pr Oil transfer hole / 23-30
SW-121A 120 & 140 4 cyl. One drive 1971 thru 79 1.98 / 20-24
SW-121B 120 & 140 4 cyl. Pre Alpha 1980 thru 84 1.98 / 20-24
SW-122A 120 & 140 4 cyl. One drive 1971 thru 79 1.84 / 17-19
SW-122B 170 thru 190 4 cyl. Pre Alpha 1980 thru 84 1.84 / 17-19
SW-123A 160 & 165 6 cyl. One drive 1971 thru 79 1.65 / 24-24
SW-123B 160 & 165 6 cyl. Pre Alpha 1980 thru 84 1.65 / 24-24
SW-124A 188 thru 260 V-8 One drive 1971 thru 79 1.5 / 20-22
SW-124B 188 thru 260 V-8 Pre Alpha 1980 thru 84 1.5 / 20-22
UPPER GEARCASE DRIVES
MERCRUISER UPPER DRIVE ASSEMBLIES
PART # HORSEPOWER DESCRIPTION YEAR DETAILS & TEETH #
SW-125A 120 & 140 Alpha 4 cyl 1985 thru 89 1.98 / 20-24
SW-125B 120 & 140 Alpha 4 cyl (New) **1985 thru 89 1.98 / 20-24
SW-126A 170 / 190 Alpha 4 cyl & V-6 1985 thru 89 1.84 / 17-19
SW-126B 170 / 190 Alpha 4 cyl & V-6 (New) **1985 thru 89 1.84 / 17-19
SW-127A 198 Alpha V-8 1985 thru 89 1.65 / 24-24
SW-127B 198 Alpha V-8 (New) **1985 thru 89 1.65 / 24-24
SW-128A 228 / 260 Alpha V-8 1985 thru 89 1.5 / 20-22
SW-128B 228 / 260 Alpha V-8 (New) **1985 thru 89 1.5 / 20-22
SW-129A 120 & 140 Gen 2 4 cyl 1990 thru pr 1.98 / 20-24
SW-129B 175 / 4.3 Gen 2 V-6 1990 thru pr 1.84 / 17-19
SW-129C 198 Gen 2 V-8 1990 thru pr 1.65 / 24-24
SW-129D 228 / 260 Gen 2 V-8 1990 thru pr 1.5 / 20-22