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SEI Marine  |  SKU: SEI-90-106-02

SEI Marine SE106 MerCruiser Alpha One Gen 1 Lower Unit (All Ratios)

$1,099.99
Rotation

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Description

SEI Marine SE106 Lower Unit – Replaces MerCruiser Alpha One Gen 1 (All Ratios)

Replaces MerCruiser R, MR, and Alpha One lower units from approximately 1972–1990.

  • Works for all gear ratios (13/21 tooth count)

  • 13-spline driveshaft

  • Rated up to 300 HP

  • Covered by SEI’s 3-Year No-Fault Warranty

  • Ships from Florida warehouse

  • Direct replacement – no modifications needed

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