Yamaha 405/416 Installation Kit 90-416-03K Outboard Lower Unit
Yamaha 405/416 Installation Kit 90-416-03K Outboard Lower Unit Original price was: $66.60.Current price is: $60.00.
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Yamaha 76° V6 Aftermarket Lower Unit – Replaces 200–250HP 2/4 Stroke – Fits 20″, 25″, 30″ Shafts – SEI 90-421

Original price was: $1,326.45.Current price is: $1,195.00.

(8 customer reviews)
Use the coupon code WELCOME5 at checkout to get 5% off on your first order

Yamaha 76 Degree 200-250 HP Outboard Lower Unit – ST90-421. Industry-leading lower unit replacement for Yamaha 76-degree V6 outboard engine. Ensures optimal performance, reliability, and quality at an affordable price.

Description

Replaces most Yamaha 76 Degree V6

For application assistance:

Please find your engine model number and call 813-925-7127

The paint color is Black. You can paint it to match.

Not designed for Yamaha F250 four stroke 250 HP motors

Additional information
Weight 65 lbs
Dimensions 65 × 37 × 10 in
Degree/Motor/Length

3.1L&3.2L/Two Stroke/20" Shaft

,

3.1L&3.2L/Two Stroke/25" Shaft

,

3.1L&3.2L/Two Stroke/30 " Shaft

,

4Stroke/25" Shaft

,

4Stroke/30" Shaft

Brand

Brand

Yamaha

Reviews (8)
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8 reviews
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8 reviews for Yamaha 76° V6 Aftermarket Lower Unit – Replaces 200–250HP 2/4 Stroke – Fits 20″, 25″, 30″ Shafts – SEI 90-421

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  1. Samantha Thomas

    The customer team resolved a shipping delay with grace. The unit itself? Flawless—quiet shifts, tight seals, OEM-grade durability. Worth the wait!

  2. William Rodriguez

    This unit’s beefier seals eliminated my leakage issues. Installed in 35 minutes, it’s been dry through monsoons and rough seas. A reliable, no-nonsense upgrade!

  3. Christopher Fisher

    Support replied in 10 minutes! Product’s worth every cent.

  4. Victoria Greene

    The customer team helped me verify compatibility with my 2005 motor. The unit arrived undamaged, installed smoothly, and outperforms my old part. Silent shifts and no vibrations—extremely satisfied!

  5. Patrick Nguyen

    The zinc-plated bolts resist rust beautifully. Installation was straightforward, and the unit performs identically to OEM. A smart buy for practical boaters!

  6. Megan Cox MD

    Weekend gem—easy life!

  7. Michelle Wagner

    This unit arrived with a pre-filled gear lube option—saved me hassle. Installation took 30 minutes, and shifts are smoother than OEM. Why pay more?

  8. Jamie Sanchez

    Perfect replacement for my rusted unit. Quieter and more efficient!

Only logged in customers who have purchased this product may leave a review.

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