Mercruiser outdrive parts *Alpha 1 lower unit *Repairs

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Mercruiser parts *Alpha 1 *Alpha gen 2 *Drawings

Tech breakdown drawings for easy component identification

  • Upper and lower gear case drawings (1967 - 1983)
  • Alpha One Gen 1 (1984 - 1990) and Gen 2 (1991 - up) exploded views
  • Links to a complete list of components with photos and OEM numbers
  • Bell housing and gimbal housing breakdowns

Click Photo for Components
Lower Units
Mercruiser parts lower gearcase

Mercruiser parts lower Gearcase

Mercruiser lower unit, including Alpha one generation one models

1970 - 1990 models, serial numbers 2791957 - 0D469858

Alpha One Gen 2 Lower Unit

Alpha One Gen 2 Lower Unit

1991 - up models, serial numbers 0D469859 - up

Click Photo for Parts

Upper Gearcases

upper gearcase
Upper Gearcase

Alpha 1 upper gear case For MC-1, R, MR and Generation 1

1970 - 1990 models, serial numbers 2791957 - 0D469858

Alpha One Gen 2 Upper Unit

Alpha One Gen 2 upper unit

1991 - Present models, serial numbers 0D469859 - up

Click Photo for Larger View
Bell Housing / Gimbal Housing
Mercruiser bell housing layout

Bell Housing Layout

1970 - 1990 models, serial numbers 2791957 - 0D469858

Gen 2 Transom

Gen 2 Transom

Bell housing for Generation 2

1991 - present models, serial numbers 0D469859 and up

Alpha One Generation 2 Bell housing with transom service parts and install video.

Mercruiser gimbal housing

Gen 2 Transom

Gimbal housing for Mercruiser, Alpha One and Alpha One gen 2 outdrives

R, MR, Alpha 1 and Generation 2 outdrive
Gimbal housing exploded view parts drawing

 
Exhaust manifolds and risers
Exhaust manifold kit

Exhaust manifold kit

Mercruiser applications from 120 - 260 hp. with V6 and V8 models