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Enhance the power and reliability of your Yamaha 2-stroke outboard with this PRO-V / V-MAX Lower Unit. Specifically designed for 150–200HP Yamaha models (1986–2014), this spanner-nut style gearcase offers exceptional strength and performance — ideal for high-speed or heavy-duty marine use.
Available in both new and remanufactured options, each unit is fully tested, built to OEM standards, and ready for direct installation with no modifications required.
| Specification | Details |
|---|---|
| Product Name | Yamaha PRO-V / V-MAX Lower Unit |
| Compatible Models | PRO-V / V-MAX 150–200HP |
| Horsepower Range | 150HP – 200HP |
| Year Range | 1986 – 2014 |
| Shaft Length | 20″ |
| Stroke Type | 2-Stroke |
| Style | Spanner-Nut |
| Condition | New or Remanufactured |
| Warranty | 1 Year |
| SKU / Part Code | YA-G6-04 |
| Installation | OEM Direct Fit – No Modifications Required |
| Usage | Freshwater & Saltwater Compatible |
Choosing this Yamaha PRO-V / V-MAX Lower Unit means investing in trusted performance and long-term durability. Whether you’re replacing a damaged gearcase or upgrading for better efficiency, this unit delivers OEM precision and smooth power delivery for both high-speed and commercial use.
This lower unit fits Yamaha PRO-V and V-MAX V6 2-stroke outboards rated between 150HP and 200HP, manufactured from 1986 to 2014. It’s a direct OEM-style replacement for 20-inch shaft models with a spanner-nut style gearcase. Always verify your model tag to confirm compatibility before ordering to ensure a precise match and optimal installation.
The spanner-nut style design uses a precision-threaded retainer to secure the propeller shaft bearing carrier, providing long-term alignment and gear stability. This configuration is common in high-performance Yamaha units like PRO-V and early V-MAX models, offering superior durability under heavy load and improved water-tight sealing compared to later tab-washer designs.
The new Yamaha lower unit is assembled from 100% new OEM-spec components, while the remanufactured version is rebuilt using genuine Yamaha cores and precision-tested gears, bearings, and seals. Both undergo pressure and shift testing to meet or exceed factory performance standards. Each option comes with a 1-year warranty, offering reliability and cost-effective value based on your preference.
Yes. This unit is a direct bolt-on replacement requiring no modifications or special adapters. It includes a pre-assembled driveshaft, shift shaft, and gearcase, fully sealed and ready for installation. When installing, use a fresh water pump kit and Yamaha Marine Gear Oil (SAE 90) to maintain lubrication and optimize operational efficiency under load.
Regular maintenance extends the life of your lower unit. Replace gear oil every 100 hours or once per season, inspect propeller shaft seals, and apply marine grease to protect against corrosion. Always flush after saltwater use to prevent buildup and check for fishing line around the prop hub. Scheduled care maintains water-resistance and smooth gear performance for years of operation.
Looking for other models or gear ratios?
Browse all Yamaha Lower Units here — find compatible options for 40HP, 60HP, 115HP, 150HP, and more Yamaha outboards.
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