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.

Hope everyone is having a great holiday weekend. SEI will be closed on Monday, but will be reopen on Tuesday. Be safe on...
09/07/2026

Hope everyone is having a great holiday weekend. SEI will be closed on Monday, but will be reopen on Tuesday. Be safe on the water!

We've Got the Power!Power your next adventure with dependable electrical components from SEI Marine Products.Whether you...
07/17/2026

We've Got the Power!

Power your next adventure with dependable electrical components from SEI Marine Products.

Whether you're replacing a starter, alternator, trim motor, ignition component, or voltage regulator, SEI delivers the quality and reliability boaters and marine technicians trust.

✔ Premium replacement parts
✔ Engineered for dependable performance
✔ Backed by our Limited 1-Year Warranty

Because confidence on the water starts with reliable power.

Happy Birthday America! Celebrating Freedom & Great Days on the Water.
07/04/2026

Happy Birthday America! Celebrating Freedom & Great Days on the Water.

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

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