SEI Lower Gearcase Seal Kit (Bravo 1 Compatible)
SEI Lower Unit Seal Kit, a seal and O-ring set for MerCruiser Bravo One lower units. Produced by SEI to OEM specifications, this replacement part offers an economical and reliable alternative compatible with MerCruiser Bravo One.
Lower Unit Seal Kit Features
SEI (Sterndrive Engineering Inc.) parts are manufactured to OEM standards and undergo extensive testing processes at their production facility in Florida.
- Compatibility: MerCruiser Bravo One
- Scope: Lower unit seal and O-ring set
- Material: Marine-grade nitrile/EPDM
Technical Specifications
| Compatibility | MerCruiser Bravo One |
| Scope | Lower unit seal and O-ring set |
| Material | Marine-grade nitrile/EPDM |
Who Is This Product For?
- Oil leak prevention: Seal replacement to stop oil leakage from MerCruiser Bravo One lower units
- Preventative maintenance: Every 3-5 years or during lower unit overhaul
Maintenance and Longevity
Sterndrive parts provide long-lasting use with regular inspection and timely replacement. All seals, bearings, and anode parts should be checked at the beginning of each season.
Related maintenance categories: Anode | Gear Oils | Seal | Impeller
Frequently Asked Questions
When to replace seals?
Oil leakage from the lower unit or a change in color/water in the gear oil indicates the need for seal replacement.
What's included in the lower seal kit?
The lower unit seal kit includes all relevant seals, O-rings, and sealing elements.
Related Products and Categories
Is This the Right Product for Your Boat?
Share your boat's model and year — let's verify the compatibility of the SEI Lower Unit Seal Kit together.
Delivery Information
Your orders are dispatched within an average of 28 business days. Free shipping on orders of 5000 TL and above.
Return Policy
You can return the products you purchased unconditionally within 14 days, provided they are unused and in their original packaging. You can contact us through our Customer Service page for return processes.