Replacement 2.6L 150-225 2Stroke 150-200 Stroke Counter

Direct-fit replacement designed for most Yamaha 90° V6 2-stroke outboards equipped with a 1.86 gear ratio. Built to OEM specifications for strength, reliability, and long service life.

  • Engine coverage: Fits most Yamaha 90° V6 2-stroke outboards.
  • Gear ratio: 1.86 — OEM-spec replacement.
  • Counter-rotation only: Not designed for standard rotation applications.
  • Durable build: Precision-machined for smooth, reliable performance.
  • Easy install: Direct-fit unit with no modifications required.

Always confirm your gear ratio and rotation type before ordering to ensure proper fitment.

Yamaha Outboard Lower Unit | 2.00 | 25" | 4 Stroke | 90 - 418 - B25FS - MarinePartsCo - 90 - 418 - B25FS
Yamaha Replacement Lower Unit | 2.00 | 25" | 4 Stroke | 90-418-B25FS
SEI Marine MPN : 90-418-B25FS
$1,395.00 USD -100%
$1,395.00 USD
Yamaha Outboard Lower Unit | 25" | 4 Stroke | 90 - 418 - B25F - MarinePartsCo - 90 - 418 - B25F
Yamaha Replacement Lower Unit | 25" | 4 Stroke | 90-418-B25F
SEI Marine MPN : 90-418-B25F
$1,395.00 USD -100%
$1,395.00 USD
Yamaha Outboard Lower Unit | A25F | 4 Stroke | 90 - 418 - A25F - MarinePartsCo - 90 - 418 - A25F
Yamaha Replacement Lower Unit | A25F | 4 Stroke | 90-418-A25F
SEI Marine MPN : 90-418-A25F
$1,395.00 USD -100%
$1,395.00 USD
Yamaha Outboard Lower Unit | 2.6L | 25" | 2 Stroke | 90 - 418 - A25 - MarinePartsCo - 90 - 418 - A25
Yamaha Replacement Lower Unit | 2.6L | 25" | 2 Stroke | 90-418-A25
SEI Marine MPN : 90-418-A25
$1,395.00 USD -100%
$1,395.00 USD

Why MarinePartsCo?

Discover what makes us different

Premium Quality

Built to OEM specifications, we only sell the highest quality replacement parts

Expert Support

Fitment first guidance, we want to make sure the part is correct before it ships

Fast Shipping

Quick delivery to get you back on the water as soon as possible.