Alpha 1 stern drive parts / Outdrive drawings

Alpha 1 outdrive screen insert (stbd) lower unit part
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Alpha 1 parts exploded upper gearcase drawing
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Alpha 1 parts exploded lower gearcase drawing
1984 thru 1990 replacement lower unit gearcase
1984 thru 1990 replacement upper unit gearcase assembly
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Bell housing parts & drawing
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Gimbal housing drawing
Anode
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Ball bearing used in lower gearcase
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Bushing
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Drive shafts
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Lock nut
Lockwasher
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Oil seal for yoke
O-ring (lower)
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Outdrive gasket kit
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Pipe plug
Propeller Hardware
Propeller / prop shaft
Prop Nut
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Ring (upper)
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Shims upper gearcase
Shift crank
Screw water pocket
Socket
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Transom service kit
Tapered bearings for lower gearcase
Trim Cylinder hose drawing
Trim cylinder parts hoses drawing
Tab washer
Tab Washer
Thrust Hub
Thrust Ring
Trim cylinder application chart
Trim cylinder components
Tube guide
Used parts
Used upper units
Upper gearcase housing (empty)
U-joint
U-joint bellow
Washer (lower)
Water pocket cover kit
Water pump
W.P. housing
Washer tension for drive gear
Washer set
Washer gaskets
Wear plate (lower)
Welch plug
Yoke (drive shaft)
Yoke (short shaft)
Alpha 1 shift cable assembly
Drive shaft adaptor
Drive gear shimming tool
Shift bushing
Washer set (lower)
Washer clip (lower)
Seal for oil passage
GLM Marine aftermarket parts Mercruiser outdrive Alpha 1 insert scree (starboard) for lower gearcase
  • OEM number 93423-1
  • GLM Marine part number: 21870 Mercruiser plastic Alpha 1 outdrive screen insert stbd. side
  • For port side screen, see our port insert page
W 21870 Alpha 1 outdrive screen insert starboard.jpg
Alpha 1 outdrive screen insert starboard

# 21870 Insert (stbd) $4.89

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