SEI Marine Products, Inc.

SEI Marine Products, Inc. SEI is the largest supplier of aftermarket sterndrives and outboards in the world. Sterndrive Engineering, Inc.

The three year fault-free warranty covers any damage to the drive that requires it to be repaired or replaced including failures resulting from lack of oil, fishing line, impact, neglect, and other abuse. (SEI) manufactures a stern drive designed to replace Mercury Marine's MerCruiser®, Alpha One®, R, MR, Gen II and Bravo One® stern drives. MerCruiser®, Alpha One®, Gen II, R, MR and Bravo One® are

trademarks of the Brunswick Corporation. SEI has no affiliation with the Brunswick Corporation. Consequently, any warranties governing products manufactured and/or sold by Brunswick Corporation will not apply to products manufactured and/or sold by SEI, or to products damaged due to the operation of an SEI product. is not affiliated with Mercury®; Yamaha®; OMC® or their products. All reference to their trademarks and trade names are the property of the respective owners.

05/22/2026
Why pay more?SEI Sterndrives are built to perform—and priced to be affordable so that you can get back on the water.SE12...
04/21/2026

Why pay more?

SEI Sterndrives are built to perform—
and priced to be affordable so that you can get back on the water.

SE121 & SE128 Models
✔️ Bravo One® & Bravo Three® fitment
✔️ Dual water inlet design
✔️ 3-Year Fault-Free Warranty

Performance. Protection. Price.
No compromises.

Props fear rocks.Jet drives don’t.SEI Jet Drives & Parts are built for the abuse—river bottoms, sandbars, and everything...
04/18/2026

Props fear rocks.
Jet drives don’t.

SEI Jet Drives & Parts are built for the abuse—
river bottoms, sandbars, and everything in between.

With intake protection that shields your system where it matters most.

Now backed by a 1-Year No-Fault Warranty.

Run shallow. Run hard. Stay moving.

Address

115 S. Forest Lakes Boulevard
Oldsmar, FL
34677

Opening Hours

Monday 8am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

08139257127

Website

Alerts

Be the first to know and let us send you an email when SEI Marine Products, Inc. posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Business

Send a message to SEI Marine Products, Inc.:

Shortcuts

Share

Category