$1,395.00
“Yamaha 90 Degree Counter Rotation Outboard Lower Unit 150-200 HP – 90-418-B25. Direct replacement for Yamaha 90 Degree V6 2-Stroke outboard engines. High-quality, 100% original and brand new, with a gear ratio of 1.86:1.”
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Manufacturer Warranty: 3-Year
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Return Policy: 60-day, hassle-free returns
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Trusted by 6,000+ boaters across the USA
Replaces most Yamaha 90 Degree V6 2-Stroke engines with a 1.86 Gear Ratio.
For Counter Rotation applications only (do not use for Standard Rotation).
The paint color is Black. You can paint it to match.
This SE418 (90-418-A25) is a Counter Rotation Gear Case.
This is a Counter Rotation Gear Case replacement for the
Yamaha 2 Stroke V6 2.6 Liter Engine with a 1.86 Gear Ratio
25″ Drive Shaft and a Counter (Left Hand)Rotation.
| Year | Model Number | Shaft | Gear Ratio | SEI part number |
|---|---|---|---|---|
| 2012 | LZ200TXR | 25 | 1.86:1 | 90-418-A25 |
| 2011 | LZ200TXR | 25 | 1.86:1 | 90-418-A25 |
| 2010 | LZ200TXR | 25 | 1.86:1 | 90-418-A25 |
| 2009 | LZ200TXR | 25 | 1.86:1 | 90-418-A25 |
| 2008 | LZ200TXR | 25 | 1.86:1 | 90-418-A25 |
| 2007 | LZ200TXR | 25 | 1.86:1 | 90-418-A25 |
| 2006 | LZ200TXR | 25 | 1.86:1 | 90-418-A25 |
| 2005 | LZ150TXRD | 25 | 1.86:1 | 90-418-A25 |
| 2005 | LZ200TXRD | 25 | 1.86:1 | 90-418-A25 |
| 2004 | LZ150TXRC | 25 | 1.86:1 | 90-418-A25 |
| 2004 | LZ200TXRC | 25 | 1.86:1 | 90-418-A25 |
| 2003 | LZ150TXRB | 25 | 1.86:1 | 90-418-A25 |
| 2003 | LZ200TXRB | 25 | 1.86:1 | 90-418-A25 |
| 2002 | LZ150TXRA | 25 | 1.86:1 | 90-418-A25 |
| 2002 | LZ200TXRA | 25 | 1.86:1 | 90-418-A25 |
| 2001 | LZ150TXRZ | 25 | 1.86:1 | 90-418-A25 |
| 2001 | LX200TXRZ | 25 | 1.86:1 | 90-418-A25 |
| 2001 | LZ200TXRZ | 25 | 1.86:1 | 90-418-A25 |
| 2001 | LX150TXRZ | 25 | 1.86:1 | 90-418-A25 |
| 2000 | LX200TXRY | 25 | 1.86:1 | 90-418-A25 |
| 2000 | LZ150TXRY | 25 | 1.86:1 | 90-418-A25 |
| 2000 | LX150TXRY | 25 | 1.86:1 | 90-418-A25 |
| 2000 | LZ200TXRY | 25 | 1.86:1 | 90-418-A25 |
| 1999 | L200TXRX | 25 | 1.86:1 | 90-418-A25 |
| 1999 | LX200TXRX | 25 | 1.86:1 | 90-418-A25 |
| 1999 | L150TXRX | 25 | 1.86:1 | 90-418-A25 |
| 1999 | LX150TXRX | 25 | 1.86:1 | 90-418-A25 |
| 1998 | L200TXRW | 25 | 1.86:1 | 90-418-A25 |
| 1998 | L150TXRW | 25 | 1.86:1 | 90-418-A25 |
| 1997 | L200TXRV | 25 | 1.86:1 | 90-418-A25 |
| 1997 | L150TXRV | 25 | 1.86:1 | 90-418-A25 |
| 1996 | L200TXRU | 25 | 1.86:1 | 90-418-A25 |
| 1996 | L150TXRU | 25 | 1.86:1 | 90-418-A25 |
| 1995 | L150TXRT | 25 | 1.86:1 | 90-418-A25 |
| 1995 | L200TXRT | 25 | 1.86:1 | 90-418-A25 |
| 1994 | L150TXRS | 25 | 1.86:1 | 90-418-A25 |
| 1994 | L200TXRS | 25 | 1.86:1 | 90-418-A25 |
| 1993 | L150TXRR | 25 | 1.86:1 | 90-418-A25 |
| 1993 | L200TXRR | 25 | 1.86:1 | 90-418-A25 |
| 1992 | L150TXRQ | 25 | 1.86:1 | 90-418-A25 |
| 1992 | L200TXRQ | 25 | 1.86:1 | 90-418-A25 |
| 1991 | L150TXRP | 25 | 1.86:1 | 90-418-A25 |
| 1991 | L200TXRP | 25 | 1.86:1 | 90-418-A25 |
| 1990 | L150ETXD | 25 | 1.86:1 | 90-418-A25 |
| 1990 | L200ETXD | 25 | 1.86:1 | 90-418-A25 |
| 1989 | L150ETXF | 25 | 1.86:1 | 90-418-A25 |
| 1989 | L200ETXF | 25 | 1.86:1 | 90-418-A25 |
| 1988 | L150ETXG | 25 | 1.86:1 | 90-418-A25 |
| 1988 | L200ETXG | 25 | 1.86:1 | 90-418-A25 |
| 1987 | L150ETXH | 25 | 1.86:1 | 90-418-A25 |
| 1987 | L200ETXH | 25 | 1.86:1 | 90-418-A25 |
| 1987 | L150ETXJ | 25 | 1.86:1 | 90-418-A25 |
| 1987 | L200ETXJ | 25 | 1.86:1 | 90-418-A25 |
This SE418 (90-418-B25F) is a Counter Rotation Gear Case.
This is a Counter Rotation Gear Case replacement for the
Yamaha FOUR Stroke 150HP Engine with a 2.00 Gear Ratio and
a 25″ Drive Shaft.
| Year | Model Number | Shaft | Gear Ratio | SEI part number |
|---|---|---|---|---|
| 2024 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2024 | LF150XB2 | 25 | 2:1 | 90-418-B25F |
| 2024 | LF150XC2 | 25 | 2:1 | 90-418-B25F |
| 2023 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2023 | LF150XB2 | 25 | 2:1 | 90-418-B25F |
| 2022 | LF150XB2 | 25 | 2:1 | 90-418-B25F |
| 2022 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2021 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2021 | LF150XB2 | 25 | 2:1 | 90-418-B25F |
| 2020 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2019 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2018 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2017 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2016 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2015 | LF150XB | 25 | 2:1 | 90-418-B25F |
| 2014 | LF150XA | 25 | 2:1 | 90-418-B25F |
| 2013 | LF150XA | 25 | 2:1 | 90-418-B25F |
| 2012 | LF150XA | 25 | 2:1 | 90-418-B25F |
| 2011 | LF150TXR | 25 | 2:1 | 90-418-B25F |
| 2010 | LF150TXR | 25 | 2:1 | 90-418-B25F |
| 2009 | LF150TXR | 25 | 2:1 | 90-418-B25F |
| 2008 | LF150TXR | 25 | 2:1 | 90-418-B25F |
| 2007 | LF150TXR | 25 | 2:1 | 90-418-B25F |
| 2006 | LF150TXR | 25 | 2:1 | 90-418-B25F |
| 2005 | LF150TXRD | 25 | 2:1 | 90-418-B25F |
| 2004 | LF150TXRC | 25 | 2:2 | 90-418-B25F |
Counter rotation lower with short shift shaft.
| Year | Model Number | Shaft | Gear Ratio | SEI part number |
|---|---|---|---|---|
| 2024 | LF150XSA | 25 | 2:1 | 90-418-B25FS |
| 2024 | LF150XSA2 | 25 | 2:1 | 90-418-B25FS |
| 2024 | LF150XCB | 25 | 2:1 | 90-418-B25FS |
| 2024 | LF150XCA | 25 | 2:1 | 90-418-B25FS |
| 2024 | LF150XCA2 | 25 | 2:1 | 90-418-B25FS |
| 2024 | LF150XSA4 | 25 | 2:1 | 90-418-B25FS |
| 2023 | LF150XSA4 | 25 | 2:1 | 90-418-B25FS |
| 2023 | LF150XCA2 | 25 | 2:1 | 90-418-B25FS |
| 2023 | LF150XCA | 25 | 2:1 | 90-418-B25FS |
| 2022 | LF150XCA2 | 25 | 2:1 | 90-418-B25FS |
| 2022 | LF150XCA | 25 | 2:1 | 90-418-B25FS |
| 2021 | LF150XCA2 | 25 | 2:1 | 90-418-B25FS |
| 2021 | LF150XCA | 25 | 2:1 | 90-418-B25FS |
| 2020 | LF150XCA | 25 | 2:1 | 90-418-B25FS |
| 2019 | LF150XCA | 25 | 2:1 | 90-418-B25FS |
| 2018 | LF150XCA | 25 | 2:1 | 90-418-B25FS |
| 2017 | LF150XCA | 25 | 2:1 | 90-418-B25FS |
This SE418 (90-418-A25F) is a Counter Rotation Gear Case.
This is a Counter Rotation Gear Case replacement for the
Yamaha 4 Stroke Inline 4 cylinder F175&F200 engines with a 1.86 Gear Ratio
25″ Drive Shaft and a Counter (Left Hand)Rotation.
| Year | Model Number | Shaft | Gear Ratio | SEI part number |
|---|---|---|---|---|
| 2024 | LF175XCA2 | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF175XCA | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF175XCB | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF175XSA2 | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF175XSA | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF200XB2 | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF200XCB | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF200XSA | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF200XSA2 | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF200XSA4 | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF200XCA2 | 25 | 1.86:1 | 90-418-A25F |
| 2024 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2023 | LF175XCA2 | 25 | 1.86:1 | 90-418-A25F |
| 2023 | LF175XCA | 25 | 1.86:1 | 90-418-A25F |
| 2023 | LF200XB2 | 25 | 1.86:1 | 90-418-A25F |
| 2023 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2023 | LF200XSA4 | 25 | 1.86:1 | 90-418-A25F |
| 2023 | LF200XCA2 | 25 | 1.86:1 | 90-418-A25F |
| 2023 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2022 | LF175XCA | 25 | 1.86:1 | 90-418-A25F |
| 2022 | LF175XCA2 | 25 | 1.86:1 | 90-418-A25F |
| 2022 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2022 | LF200XB2 | 25 | 1.86:1 | 90-418-A25F |
| 2022 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2022 | LF200XCA2 | 25 | 1.86:1 | 90-418-A25F |
| 2021 | LF175XCA2 | 25 | 1.86:1 | 90-418-A25F |
| 2021 | LF175XCA | 25 | 1.86:1 | 90-418-A25F |
| 2021 | LF200XB2 | 25 | 1.86:1 | 90-418-A25F |
| 2021 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2021 | LF200XCA2 | 25 | 1.86:1 | 90-418-A25F |
| 2021 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2020 | LF175XCA | 25 | 1.86:1 | 90-418-A25F |
| 2020 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2020 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2019 | LF175XCA | 25 | 1.86:1 | 90-418-A25F |
| 2019 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2019 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2018 | LF175XCA | 25 | 1.86:1 | 90-418-A25F |
| 2018 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2018 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2017 | LF175XCA | 25 | 1.86:1 | 90-418-A25F |
| 2017 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2017 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2016 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2016 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2015 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2015 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2014 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2014 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2013 | LF200XCA | 25 | 1.86:1 | 90-418-A25F |
| 2013 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| 2012 | LF200XB | 25 | 1.86:1 | 90-418-A25F |
| Weight | 65 lbs |
|---|---|
| Dimensions | 65 × 37 × 10 in |
| Ratio/Motor/Length |
1.86/2-Stroke/25" Shaft ,2.00/4-Stroke/25" Shaft ,2.00/4-Stroke/25" Shaft/ Short Shift Shaft /Counter rotation ,F200/F175 / 4 Cyl. /25" Shaft/ 1.86 4 Stroke |
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Paula Burke –
After a flawed Amazon purchase, this unit saved my season. Crisp shifts, tight seals, and stellar service. Finally, a company that cares!
Anthony Jones –
No more jerky shifts. Smooth as silk now!
Shelly Nguyen –
The zinc coating resists corrosion beautifully. After saltwater exposure, the unit looks and performs like new. Shifts are crisp, and the prop spins freely. 10/10!
Carrie Rice –
Perfect for DIYers. Saved $$$ on mechanic fees.
Eric Robinson –
Year-round endurance—no compromises!
Jeremy Marsh –
I’ve tested this unit in saltwater for three weeks, and there’s no sign of corrosion. The gears engage smoothly, and it’s noticeably quieter than my old OEM part. Highly recommend for marine use!
Julian Lucas –
Paired this with a high-performance prop—the combo is unstoppable. The unit handles aggressive acceleration effortlessly, and the oil stays contaminant-free. A must-have for speed enthusiasts!
Rachael Hall –
The zinc-anodized bolts haven’t rusted after weeks in brackish water. Installation was tool-free, and the unit outperforms my old OEM part. A must-buy for saltwater boaters!
Joel Mason –
Had it running in 30 minutes flat. Zero issues so far.
Javier Garza –
Didn’t need YouTube tutorials—manual was crystal clear.
Timothy Smith –
No special tools needed. Done in a coffee break!
Cassandra Mcdaniel –
Eco-conscious design—heavy-duty!
Rachel Kirby –
Installed this during a storm—still took under an hour. Shifts are smooth, runs cool, and no leaks. A reliable upgrade for any condition!