SEI Propeller Shaft Bearing (Volvo Penta Compatible)
The SEI Propeller Shaft Bearing is a high-strength marine bearing manufactured to OEM tolerances. It is designed specifically for Volvo Penta sterndrive systems, replacing original OE# 3854249 / 66668A1 / 99328A1 / 8M0103470. It supports rotating shafts in outdrive and propeller shaft systems, minimizing axial/radial friction and ensuring vibration-free operation.
Propeller Shaft Bearing Advantages and Features
- Minimum Friction and Vibration: Ensures shafts rotate on the correct axis, preventing vibration-induced wear and energy loss.
- High Load Capacity: Exhibits high resistance to sudden loads and continuous radial/axial forces in marine conditions.
- Heat-Treated Steel: Manufactured from special marine-grade alloy bearing steel with increased corrosion resistance.
Technical Specifications
| Brand | SEI (Aftermarket) |
| OEM Reference Number | 3854249 / 66668A1 / 99328A1 / 8M0103470 |
| Compatible Systems | Volvo Penta sterndrive systems |
| Product Group | Transmission and Drive Bearings |
Application and Usage
The bearing should be replaced if there is a humming sound from the outdrive area, abnormal operating noise, or if play (tolerance exceeding limits) is observed on the shaft during periodic outdrive maintenance.
Maintenance and Installation Recommendations
Avoid direct hammer blows during bearing installation; use a press or appropriate driving sleeves. Keeping the gear oil clean directly extends bearing life.
Frequently Asked Questions
Does this bearing fit multiple OEM numbers?
No, this product is an aftermarket (equivalent) spare part from the SEI brand. Yes, it replaces the original parts with numbers 3854249, 66668A1, 99328A1, and 8M0103470 with a single equivalent product.
When should the propeller shaft bearing be replaced?
It should be checked and replaced if necessary due to vibration, abnormal noise, or during propeller shaft removal.
Related Products and Categories
- Anode Products
- Transmission Oil Products
- Seal Products
- Impeller Products
- Volvo Penta Products
- Gear Products
- Bearing Products
- Inboard Engine Products
- Propeller Shaft Products
Is This the Right Product for Your Boat?
Provide your engine brand, model, and outdrive serial number to the Clever Marin team, and let's confirm together that the SEI Propeller Shaft Bearing model will work 100% compatible 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.