SEI Gearbox Seal Kit (Mercury Compatible)
The SEI Gearbox Seal Kit is a high-quality aftermarket replacement part, specifically designed for Mercury sterndrive/outboard systems, replacing the original OE# 26-79831A1. It is manufactured to OEM specifications to ensure sealing in the gearbox and drive units, prevent gearbox oil leakage, and block seawater from entering the internal gear case.
Gearbox Seal Kit Advantages and Features
- High Sealing Performance: Maintains critical oil pressure in the gearbox and prevents oil level reduction.
- Seawater Protection: Blocks corrosive seawater from entering the gearbox, preventing gear and bearing corrosion.
- Durable Material: Made from nitrile rubber and metal-backed rings resistant to high temperatures, friction, and saltwater.
Technical Specifications
| Brand | SEI (Aftermarket) |
| OEM Reference Number | 26-79831A1 |
| Compatible Systems | Mercury sterndrive/outboard systems |
| Product Group | Gearbox and Drive Seals |
Application and Usage
If milky gear oil (indicating water intrusion) or oil leakage from the drive unit is observed, the seal kit should be replaced without delay.
Maintenance and Installation Recommendations
During installation, it is recommended to lightly lubricate the seals with appropriate marine gear oil and seat them perfectly centered using special seal driving tools to prevent damage.
Frequently Asked Questions
Which OEM number is this seal kit an equivalent for?
This product is an aftermarket equivalent that works perfectly with the original part. It replaces the original Mercury part with OE# 26-79831A1.
When should the seal kit be replaced?
It should be replaced if there are signs of gear oil leakage or during an overhaul.
Related Products and Categories
- Anode Products
- Gear Oil Products
- Seal Products
- Impeller Products
- Mercury Products
- Mercury Spare Parts
- Gear Products
- Bearing Products
- Inboard Engine Products
Is This the Right Product for Your Boat?
Provide your engine brand, model, and drive serial number to the Clever Marin team, and let's confirm together that the SEI Gearbox Seal Kit will work 100% compatibly with your boat.
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.