New SEI Suzuki DF200 DF225 DF250 Standard Rotation Outboard Gearcase Assembly (2004-2025)

Upgrade or replace your damaged lower unit with this brand-new SEI Standard Rotation Outboard Gearcase Assembly designed for select Suzuki DF200, DF225, and DF250 outboard motors.

Built for durability, reliability, and long-lasting performance, this complete gearcase assembly is engineered to meet or exceed OEM specifications. Whether you’re replacing a worn lower unit, repairing impact damage, or restoring peak performance, this SEI gearcase provides an affordable and dependable solution.

Manufactured using premium marine-grade materials, this gearcase is designed to withstand demanding offshore and freshwater environments while delivering smooth power transfer and reliable operation.

Compatible Models

25″ Shaft Models

• Suzuki DF200TX (2004-2014)
• Suzuki DF225TX (2004-Current)
• Suzuki DF250TX (2004-Current)

30″ Shaft Models

• Suzuki DF200TXX (2004-2014)
• Suzuki DF225TXX (2004-Current)
• Suzuki DF250TXX (2004-Current)

Important Compatibility Notes

• Standard Rotation Models Only
• Does NOT fit engines equipped with two-piece driveshafts
• Does NOT fit engines equipped with TERE (Thrust Enhancing Reverse Exhaust)
• Available for 25″ and 30″ shaft applications
• Supplied in black finish and can be painted to match your engine

Replaces OEM Part Numbers

25″ Shaft Models

• 50040-93839-YAY
• 50040-93840-0EP
• 50040-93839-Y5S
• 50040-93840-QTN

30″ Shaft Models

• 50060-93840-YAY
• 50060-93840-QTN
• 50060-93839-0EP
• 50060-93840-Y5S

Key Features

• Brand New SEI Gearcase Assembly
• Direct OEM Replacement
• Standard Rotation Configuration
• Heavy-Duty Marine Construction
• Corrosion Resistant Components
• Precision Machined Internal Components
• Ready for Installation
• Excellent Alternative to Expensive OEM Replacements

Benefits

A damaged gearcase can significantly affect performance, shifting quality, fuel efficiency, and overall reliability. This SEI replacement lower unit provides a cost-effective solution that helps restore your outboard’s performance while maintaining durability and dependability on the water.

Ideal for commercial operators, offshore anglers, recreational boaters, and anyone looking for a reliable replacement gearcase for their Suzuki outboard.

Shipping Information

Available for local and international shipping. Securely packaged to ensure safe delivery.