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OMC Parts Drawing *Cobra *Mercruiser *Alpha SEI Outdrives

Johnson piston kit 9.9hp

Crossflow pistons for 2 cylinder models

Updated April 29 2026

P/N 24410, 24420, 24430

  • 2 Cylinder 9.9 and 15 horse power years 1981 to 1992
  • Includes rings, pin and retainer.
  • Available in standard, .020 and .030 oversized.
  • Replaces OEM 5006670, 5006662
  • Compatible with 2 cylinder models shown below. 2.1875″ O.D.
  • 9.9 hp years 1981 to 1992
  • 15 hp 3 cylinder years 1978 to 1995

Customers looking for 24410 also looked for:

39380-2 Cylinder

P/N 39380

replaces 394546

2-Cylinder, 2 stroke

9.9 hp – 15 hp

years 1974 to 1992

$25.00 USD

$44.89 CDN