$1,545.00
SEI SE404 Lower Unit for Yamaha 4-Stroke Outboards – 2.3:1 Ratio The SEI SE404 is an aftermarket replacement lower unit for select Yamaha four-stroke outboards requiring a 2.3:1 gear ratio...
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SEI SE404 90-404-A20 Yamaha Two-Stroke Lower Unit – 2.00:1 – 20" Shaft
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- SKU:
- S-E-90-404-A20
$1,545.00
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SEI SE404 Yamaha Two-Stroke Lower Unit – 2.00:1 – 20" Shaft
The SEI 90-404-A20 SE404 is an aftermarket replacement lower unit for select Yamaha two-stroke outboards. Featuring a 2.00:1 gear ratio, 20-inch driveshaft configuration, and right-hand rotation, it replaces OE number 6H1-45300-16-8D. Supplied in black, it can be painted to match your engine.
This item is subject to a 20% restocking fee.
Year, serial number, and horsepower are required to process your order. Please contact us with this information after placing your order. Processing will be delayed until this information is received.
Features
- Right-hand rotation
- 2.00:1 gear ratio
- 20-inch driveshaft configuration
- Black finish; paint to match your engine if desired
Applications and Replacement Reference
SEI identifies compatible Yamaha 75 and 90 HP two-stroke applications. Its application guide also lists select 80 and 85 HP models; verify your exact engine model before ordering.
- SEI part number: 90-404-A20
- OE replacement reference: 6H1-45300-16-8D
Not compatible with four-stroke engines.
Fitment and Ordering
Confirm your full engine model number, serial number, existing gearcase, rotation, gear ratio, and shaft length against SEI's application guide. Horsepower alone does not confirm compatibility.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
SEI SE404 90-404-A20 Yamaha Two-Stroke Lower Unit – 2.00:1 – 20" Shaft Specs
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