Mercruiser parts warehouse / stern drive drawings

Mercruiser lower unit / upper gearcase application chart
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Help me identify my outdrive
Mercruiser outdrive tech drawings
1972 thru 1990 gearcase application chart
1972 thru 1990 new lower unit
Upper gearcase parts drawing number 1 thru 22
Upper gearcase parts drawing number 23 to 41
Lower gearcase parts drawings number 1 thru 24
Lower gearcase parts drawings number 25 thru 57
Lower gearcase parts drawings number 58 to 73
U-joint assembly
Anode - trim tab aluminum or magnesium
Anodes magnesium
Bearings shims seals lower gearcase
Bearings - tapered roller
Bearing (roller)
Bearing (ball type reverse gear)
Bearing - forward gear
Bearings Torrington roller
Bearing tapered for drive shaft
Bearings upper gearcase
Bearing drive shaft
Bearing - gimbal
Oil seal - gimbal bearing
Bearing application lower gearcase
Bearing application chart upper gearcase
Bell Housing Components
Bell housing layout components
Bellow help guide
Bellows boats engine exhaust
Bearing carrier - lower gearcase
Bolts and screws
Bolt - trim tab
Bolt - stainless steel
Bushing assembly
Carburetor floats
Carburetor gaskets
Carburetor guide carb kits
Clip - shift shaft
Clutch dog
Cross pin - clutch dog
Cylinder head manifold gasket set
Coupler-engine
Distributor guide
Distributor Cap
Drain plug
Drive shaft - application guide
Drive shaft - lower gearcase
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Engine overhaul gasket sets
Engine (marine) head gaskets
Engine oil pan gaskets
Engine crank shaft rear main oil seals
Electronic conversion kits
Exhaust Elbow
Fuel filter water separator
Fuel Pump
Gear set application guide
Gear set-seals-cluch-dog-bearings-shims
Gears-gear-sets upper gearcase
Gear set clutch dog
Gear ( reverse )
Gear set pinion / forward
Gimbal housing components
Housing - upper (empty)
Help guide year with serial number
Help guide diesel - year with serial number
I Need Help Page
Ignition Coils
Impellers
Impeller keys
Housing (gear case)
Key way ( bearing carrier )
Manifolds - exhaust
manifold component application
Manifold GM 262 / 4.3L V6
Manifold GM 250/292 inline 6 cyl.
Manifolds GM 120/140hp 4cyl. 1982 thru 1995
Manifolds GM 140hp 4Cyl. 181 CID 1968/82
Manifold 4 cylinder 1990 & up
Manifold components 165/170/180/190 3.7 liter XL 470
488 / 485 / 470 Engine help page
Manifold set GM 229/262 V6
Manifold GM 229 / 262 V6 1983 & UP
Manifolds GM 305/350 V8 1977-1982 parts
Manifolds GM 305 327 350 before 1977
Manifold GM 305-350 V8 1983 up
Manifold GM 427 454 482 V8 (1968 -1986)
Manifold kits - aluminum
Manifold-gaskets
Nut propeller lock nut
Nuts - water pump impeller
Nuts
Nut - pinion nut
Nut - cover
Nut bearing retainer
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Oil plug - magnetic
Plug - welch
Propellers ( used )
Aluminum propellers
Propeller Hardware
Propeller shaft
Ring - upper gearcase
Screen - port insert
Screen - starboard insert
Screw - insert screen
Seal kit # 87510 lower gearcase
Seal kit (upper gearcase)
Shift crank
Shift shaft
Gasket - washer shift shaft
Shift spool
Shift cable kits
Shift cable assembly
Shims (reverse gear)
Shim application guide
Shims / Shim kits upper gearcase
Shims forward gear backlash
Shim kit lower gearcase tapered bearing
Shipping address
Solenoids-marine engine starter
Solenoids - electrical
Spring - clutch dog
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Tab washer receiver
Tab washer
Tab washer - keyed
Thermostat Housing Assembly
Thermostat kits - engine
Thrust hub
Thrust hub spacer
Thrust ring shim
Thrust ring
Tools
Transom service kits
Transom service kit application
Transom plate / shift cable
Trim connector kit
Trim cylinder repair components with layout
Trim cylinder hoses - 120 to 260
Trim cylinder repair
Trim cylinders application
Trim hoses ram bushings, pins 1972-1982
Tune Up Kits
U-joint
U-Joint socket
Upper gear set application guide
Used Mercruiser parts
Used upper units
Upper gear housing (complete)
Voltage Regulator
Water pump kit - impellers & keys
Water pumps - sea
Water Pump Gaskets
Water pump screw
Water pump base
Water pump housing
Washer - hub lock
Water pump tube guide
Water pump washers
Water pump passage kit
Water pumps-engine
Yoke
Yoke - drive shaft
Oil pump
Take the boat to OMC outdrives Johnson outboard
Boat trailer parts
Carrier assembly
Mercruiser lower unit-upper gearcase application chart
Year, serial and model number
  • Stern drive application chart for the Mercruiser MC-1/R/MR/Alpha 1 (one)
  • Model, gear ratio, serial number range and year range listed in chart
  • See our Mercruiser lower unit drawing page for a complete list of parts
  • For upper gearcase parts, see our Mercruiser upper gearcase page (includes technical drawing breakdown for easy part identification)
  • See our complete lower unit page for more information on our GLM aftermarket #18100 gearcases

Model
Ratio
Serial #
Lower
unit
Upper
gearcase
120 / 140
1.98
2791957 thru 6225576
1970 thru 1982
18100
19400
470 / 485
1.84
4208730 thru 6225575
1976 thru 1982
18100
19300
165
1.65
2763442 and Up
1970 thru 1981
18100
19200
888
1.50
3106717 and Up
1971 thru 1977
18100
19100
225-S
1.50
3856268 thru 4200499
1974
18100
19100
233
1.32
4200500 and Up
1975 thru 1977
18100
19500
898 / 228 / 260
1.50
4782330 thru 6225576
1977 thru 1982
18100
19100
250
1.32
4791300 thru 4898729
1977
18100
19500
R
1.98
6225577 and Up
1983
18100
19400
R
1.65
6225577 and Up
1983
18100
19200
R
1.84
6225577 and Up
1983
18100
19300
R
1.50
6225577 and Up
1983
18100
19100
R
1.32
6225577 and Up
1983
18100
19500
MR/ Alpha One
1.98
6225577 and Up
1984 thru 1990
18100
19400
MR/ Alpha One
1.65
6225577 and Up
1984 thru 1990
18100
19200
MR / Alpha 1
1.84
6225577 and Up
1984 thru 1990
18100
19300
MR / Alpha 1
1.50
6225577 and Up
1984 thru 1990
18100
19100
MR / Alpha 1
1.32
6225577 and Up
1984 thru 1990
18100
19500
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MLM-Mercruiser-lower-unit-gear-case-complete.jpg
GLM aftermarket Mercruiser lower unit outdrive replacement

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