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OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives

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OMC 400-800 lower unit repair

Rebuilds / Repairs - OMC Lower Gear Cases

Updated April 27 2026

  • Repair prices / rebuild and remanufactured pricing
  • Compatible with all inline six cylinder, V6 and V8 models
  • Four cylinder model also available
  • Stringer and 400-800 lower unit repair cost for years 1982 to 1985
  • 1978 to 1981 models use a servo hydraulic pump to assist with shifting, this model is available upon request
800 mechanical shift outdrive

Stringer 800

Includes all labor, bearings, seals, pressure testing and re-painting.

*Note – additional parts may be required if necessary. Please see parts breakdown page.

See below for information on sending your outdrive for repair.

Basic Repair: $495.00 USD

Basic Repair: $618.89 CDN

(Includes all bearings, seals, gears, shafts – case is fully painted)

 

Full 1 Year Warranty

(including technical phone support)

*Note – This unit is the standard mechanical shift model (1982-1985).

If you have the servo hydraulic shift model (1978-1981), you can upgrade to the 1982-1985 model by changing the shift cable and shifter housing.

Please contact us with help with identifying your model. You can also look for the slot (2″ x 1″ for an anode in the lower unit just above the cavitation plate above the propeller.

This slot for the anode indicates you have the standard mechanical shift model – if you don’t have the slot for the anode, you have the servo hydraulic model.

Full Rebuild / Remanufactured Replacement: $1595.00 USD (plus core deposit)

Full Rebuild / Remanufactured Replacement: $2121.89 CDN (plus core deposit)