$1,825.00 Original price was: $1,825.00.$1,645.00Current price is: $1,645.00.
Yamaha 250 HP 4 Stroke Counter Rotation Outboard Lower Unit – 90-429. This high-performance outboard lower unit features a water-cooled bearing carrier, side and double water intakes, and is designed for extreme performance.
Search your model no. for perfect fit
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Manufacturer Warranty: 3-Year
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Return Policy: 7 – 14 day, hassle-free returns
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Trusted by 6,000+ boaters across the USA
Replaces LF250 lower units with dual water intakes.
It is painted black but you can paint it to match your engine.
90-429-B25F replaces LF250 lowers with a 25″ driveshaft.
The unit is black, You will need to paint it if you want to match your motor.
| Year | Model Number | Shaft | Gear Ratio | SEI part number |
|---|---|---|---|---|
| 2018 | LF250XA | 25 | 2:1 | 90-429-B25F |
| 2017 | LF250XA | 25 | 2:1 | 90-429-B25F |
| 2016 | LF250XA | 25 | 2:1 | 90-429-B25F |
| 2015 | LF250XA | 25 | 2:1 | 90-429-B25F |
| 2014 | LF250XA | 25 | 2:1 | 90-429-B25F |
| 2013 | LF250XA | 25 | 2:1 | 90-429-B25F |
| 2012 | LF250XA | 25 | 2:1 | 90-429-B25F |
| 2011 | LF250TXR | 25 | 2:1 | 90-429-B25F |
| 2010 | LF250TXR | 25 | 2:1 | 90-429-B25F |
| 2009 | LF250BTXR | 25 | 2:1 | 90-429-B25F |
| 2009 | LF250TXR | 25 | 2:1 | 90-429-B25F |
| 2008 | LF250BTXR | 25 | 2:1 | 90-429-B25F |
| 2008 | LF250TXR | 25 | 2:1 | 90-429-B25F |
| 2007 | LF250TXR | 25 | 2:1 | 90-429-B25F |
| 2006 | LF250TXR | 25 | 2:1 | 90-429-B25F |
| 2005 | LF250TXRD | 25 | 2:1 | 90-429-B25F |
90-429-B30F replaces LF250 lowers with a 30″ driveshaft.
The unit is black, You will need to paint it if you want to match your motor.
| Year | Model Number | Shaft | Gear Ratio | SEI part number |
|---|---|---|---|---|
| 2013 | LF250UA | 30 | 2:1 | 90-429-B30F |
| 2012 | LF250UA | 30 | 2:1 | 90-429-B30F |
| 2011 | LF250TUR | 30 | 2:1 | 90-429-B30F |
| 2010 | F250TUR | 30 | 2:1 | 90-429-B30F |
| 2009 | LF250BTUR | 30 | 2:1 | 90-429-B30F |
| 2009 | LF250TUR | 30 | 2:1 | 90-429-B30F |
| 2008 | LF250BTUR | 30 | 2:1 | 90-429-B30F |
| 2008 | LF250TUR | 30 | 2:1 | 90-429-B30F |
| 2007 | LF250TUR | 30 | 2:1 | 90-429-B30F |
| 2006 | LF250TUR | 30 | 2:1 | 90-429-B30F |
| 2005 | LF250TURD | 30 | 2:1 | 90-429-B30F |
| Weight | 65 lbs |
|---|---|
| Dimensions | 65 × 37 × 10 in |
| Ratio/Shaft |
F250/ 25" Shaft/ 2.00/4 Stroke ,F250/ 30" Shaft/ 2.00/4 Stroke |
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David Flores –
The included gasket sealed perfectly—no leaks post-install. The unit shifts seamlessly and runs cooler than my old part. A hassle-free upgrade!
Cody Cannon –
Installed this on a 2005 motor—fit like a glove. Smooth engagement, no vibrations, and saved $700. Vintage boaters, this is your fix!
Alexander Mcfarland –
The customer team helped me troubleshoot a minor alignment issue over the phone. The unit itself is whisper-quiet, leak-free, and handles sudden throttle changes effortlessly. OEM quality without the insane markup!
Kelly Mendoza –
Thick housing—tough love!
Catherine Romero –
Installed this during a family fishing trip. Took 40 minutes, and it handled rough wakes without complaint. The kids noticed the quieter engine—thanks to this unit!
Phyllis Robertson –
After a $1,200 dealer quote, I gambled on this. Installed it myself in 45 minutes, saved $800, and gained smoother performance. Silent operation—why pay OEM prices?
Charles Brooks –
After a decade of OEM parts, I tried this. The stainless steel components are thicker, the shifts are faster, and the price is unbeatable. Why didn’t I switch sooner?
David Kline –
Pre-greased fittings saved me 30 minutes of messy work. Installed solo, and it’s been flawless through 50 hours of runtime. DIYers, this is your holy grail!
Charles Lane –
The delivery was so fast I thought it was a mistake. Installed the unit in 40 minutes, and it’s handled everything from idling to WOT without issue. Zero complaints!
Matthew Bailey –
The splines aligned perfectly on the first try. After eight weeks, the oil is still clear, and the unit runs silently. A flawless replacement!
Kelly Martin –
Vibration-free—smooth rides!
Shane Horn –
Eco-friendly packaging impressed my green-hearted crew. The unit handles heavy loads effortlessly—no complaints after 60 days. A planet-friendly choice for eco-conscious captains!
Jack Harrington –
Tested in Alaskan fjords and Caribbean reefs—no performance drop. The seals stay flexible in freezing temps, and shifts stay precise in tropical heat. A four-season workhorse!
Jared Dean –
24/7 support and leak-proof design—stellar product!
Kimberly Nguyen –
Quick email support resolved my query. Product is stellar!
Kayla Peterson –
I’ve put 20 hours on this unit since installation. The oil stays clean, the temperature stays steady, and there’s no vibration. Couldn’t ask for a better aftermarket solution!
Jacqueline Bullock –
This unit arrived with pre-filled gear lube and labeled hardware. Installed it during a rainstorm—still took under an hour. Shifts are seamless, and the anti-vibration design quiets the entire boat!
Jennifer Serrano –
I’ve recommended this to three friends already. The unit is robust, the shifts are seamless, and the oil stays contaminant-free. OEM quality without the markup!