Brand New Aftermarket Replacement for Yamaha® 4-Stroke 115Hp  Outboard Lower Unit Lower Gearbox

Both 20" Long Shaft and 25" Extra Long Shaft Available.

Replacement SEI Gearboxes are finished with a final coat Marine Finish, (Black) that is suitable for immediate Marine use. 
However for best presentation it will need to be colour matched to your Outboard.

Manufacturers Warranty - 3 Years on Outboard Lower Units on Recreational Boats

Manufactured by SEI Major US Marine Manufacturer of Aftermarket Marine Products

For More Information on Applications and Gear Ratios call 0414 777 858

SE405 Models Replaces Yamaha® V4, 4 Stroke Outboard Lower Units from 2000 to 2014 

SE405 Models Replaces all Yamaha® V4, 2 Stroke Outboard Lower Units

SE416 Models Replace Most Yamaha® 4 Stroke & 2 Stroke, 90 Degree V6 Outboard Lower Units

SE421 Models Replace Most Yamaha® 4 Stroke & 2 Stroke 76 Degree V6 Outboard Lower Units

Counter Rotation Units also Available for Both V6 Applications (Add $295 to Price)

Installation Kits, Drive Shafts, Seal Kits, Spare parts Available for all Outboard Lower Units

Registered Melbourne & Adelaide Dealer

We have over 30 Years Experience in high performance engines, gearboxes, and marine fittings.

Stock Available in Australia –

Orders Processed within 5 Business Days from payment

Tax Receipts and detailed Manufacturers Warranty information Provided.

Local pick-up or Courier at Customers Cost. Please contact seller for Freight Cost