SEI SE218 Complete Counter Rotation Outdrive (Mercury 3.0L Compatible)
13 / 1.75 / 3.0L / 25" Shaft
148.369,99 TL
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SEI SE218 Complete Counter Rotation Outdrive (Mercury 3.0L Compatible)
148.369,99 TL
$
3,103.55
USD
€
2,685.99
EUR
VAT Included
Free Shipping
Compatible Product
Estimated Delivery
28 Business Days
Shipping
Free Shipping
Returns
14-Day Easy Returns
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The SEI SE218 Counter-Rotating Complete Lower Unit is a complete aftermarket lower unit specifically designed for Mercury 3.0L outdrives (Serial No. 1B504989 and below). It directly replaces the original lower unit, with all internal gears, shafts, bearings, and water pump components factory-assembled. The original OE# reference code is Not Specified.
Advantages and Features of the SE218 Counter-Rotating Complete Lower Unit
- Direct Replacement (Bolt-on): Perfectly compatible with original lower unit connections, requiring no extra modifications or adjustments during installation.
- Complete Solution: Shipped with a pre-assembled water pump kit, gear set, seals, and bearings, reducing labor time.
- Marine-Grade Housing: Cast from corrosion-resistant marine alloy aluminum with a protective primer and paint coating.
Technical Specifications
| Brand | SEI (Aftermarket) |
| OEM Reference Number | Not Specified |
| Compatible Systems | Mercury 3.0L lower unit (Serial No. 1B504989 and below) |
| Product Group | Complete Lower Units |
Application Area and Use
This unit is preferred as a complete replacement when the lower unit housing is cracked, the gearbox is locked, or in cases of major mechanical damage, rather than replacing individual parts.
Maintenance and Installation Recommendations
After the initial installation, the gear oil must be drained and refilled with new oil after a 10-20 hour break-in period. Afterward, the oil level should be checked before each season.
Frequently Asked Questions
What is the difference between SE218 and SE216?
The SE218 is a counter-rotating model, while the SE216 is a standard rotation model. In dual engine setups, typically one side uses standard rotation and the other uses counter-rotation.
What should I do if I have an 8-spline driveshaft?
You will need to purchase a stub shaft unit and obtain the upper driveshaft from an OE dealer.
Is the water tube coupler included?
The correct coupler is included for units with serial numbers OG438000 and above; for lower serial numbers, you will need to use your old coupler or obtain SEI part number 96-116-12K separately.
Related Products and Categories
- Anode Products
- Gear Oil Products
- Seal Products
- Impeller Products
- Mercury Products
- Mercury Spare Parts
- Gear Products
- Inboard Engine Products
Is This the Right Product for Your Boat?
Provide your engine brand, model, and lower unit serial number to the Clever Marin team, and let's confirm together that the SEI SE218 Counter-Rotating Complete Lower Unit 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.