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OMC Cobra lower housing *1986 to 1993

Lower unit gearcase

  • Sand cast from superior A356T5 aluminum alloy
  • Mercruiser style pressed fit pinion needle bearing
  • Large and Small empty gear housings (see chart)
  • Propeller shaft bearing carrier is retained with bolts and tabs on this 1991 to 1993 style replacement unit
  • Prop shaft bearing carrier is prevented from rotating with a key and groove
  • Water pick-up screens are removable without disassembling the drive (1991 - 1993 style)
  • Individual gears and clutch dogs also available
  • Cobra complete lower gear housing assembly with heavy duty gears and all other components is also available

Exploded View Drawings
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Model
Lower unit
gear housing
Year
2.3L 4-Cyl. Ford (1987 - 91)
28900 Small
GLM # 11388
3.0L 4-Cyl. Chevy (1986 - 89)
28900 Small
GLM # 11388
3.0L 4-Cyl. Chevy (1990 - 93)
28800 Large
GLM # 11406 (1990)
4.3L V6
28800 Large
GLM # 11406 (1986 - 90)
5.0L Chevy / Ford
28800 Large
GLM # 114066 (1986 -90)
5.7L Chevy
28800 Large
GLM # 114066 (1986 -90)
5.8L Chevy
28800 Large
GLM # 114066 (1986 -90)

P/N 288 Empty used lower unit OMC Cobra gear housing
( Large hub 4 1/4 inch) $399.00