SEI SE221 Complete Outdrive (Compatible with Mercury 3.0L V6, 2.6L I6, and 1.7L I4)
20 / 2.08 / 1.7L 4-Stroke / 20" Shaft
172.999,99 TL
Skip to product information
SEI SE221 Complete Outdrive (Compatible with Mercury 3.0L V6, 2.6L I6, and 1.7L I4)
172.999,99 TL
$
3,661.40
USD
€
3,216.10
EUR
VAT Included
Free Shipping
Compatible Product
Estimated Delivery
28 Business Days
Shipping
Free Shipping
Returns
14-Day Easy Returns
SECURE PAYMENT
3D
SECURE
Secure shopping with 256-Bit SSL
The SEI SE221 Complete Lower Unit is an aftermarket lower unit specifically designed for Mercury Outboard Motors, replacing the original OE# Not Specified reference part. It is a direct replacement for the original lower unit, with all internal gears, shafts, bearings, and water pump components factory assembled.
SE221 Complete Lower Unit Advantages and Features
- Bolt-on Replacement: Perfectly matches original lower unit mounting points, requiring no extra modification or adjustment during installation.
- Complete Solution: Shipped with water pump kit, gear set, seals, and bearings pre-assembled, reducing labor time.
- Marine-Grade Housing: Features a corrosion-resistant marine alloy aluminum cast housing with a protective primer and paint coating.
Technical Specifications
| Brand | SEI (Aftermarket) |
| OEM Reference Number | Not Specified |
| Compatible Systems | Mercury Outboard Motors |
| Product Group | Complete Lower Units |
Application Area and Use
It is preferred as a complete replacement instead of replacing individual parts when the lower unit housing is cracked, the gearbox is locked, or there is major mechanical damage.
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, and thereafter the oil level should be checked before each season.
Frequently Asked Questions
Which engine types does the SE221 fit?
It fits 3.0L V6 2-stroke (13 spline), 2.6L I6 4-stroke Verado (20 spline, 200-300 HP), and 1.7L I4 4-stroke Verado (20 spline, 135-200 HP) engines.
Does it fit V6/V8 Verado engines after 2019?
No. The new V6/V8 Verado family released around 2019, although similar to the SE221 in appearance, uses a different gearcase and is not compatible with the SE221.
Can it be used instead of Torque Master or Sport Master?
No, these models have a 19-spline "Fat Shaft" propeller shaft; the SE221 is 15-spline and is not a suitable replacement for these models.
Is an installation kit included?
No, the installation kit and anode kit must be purchased separately.
Related Products and Categories
- Anode Products
- Gear Oils Products
- Seal Products
- Impeller Products
- Mercury Products
- Mercury Spare Parts Products
- Gears Products
- Inboard Motors Products
- Verado 175-400 HP 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 we will confirm together that the SEI SE221 Complete Lower Unit model will work 100% 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.