Yamaha SS433 Snowmobile (1971)

The 1971 Yamaha SS433 was a prominent snowmobile of its time, celebrated for its performance and reliability. This model was powered by a robust 433cc fan-cooled twin-cylinder engine, featuring twin exhaust pipes, a bore and stroke of 68mm x 59.6mm, and a 5-port induction system with aluminum cylinders. It delivered approximately 40 horsepower and incorporated Yamaha's Autolube oil injection system for enhanced engine longevity. The "SS" designation stands for "Super Sport," highlighting its performance-oriented nature. For 1971, the SS433 was presented as the primary model, without distinct sub-trims. The 1971 Yamaha SS433 maintained a consistent design throughout its model year. While the 433cc engine was essentially a bored-out version of the 396cc, and shared interchangeable cylinders with other Yamaha models of the era (like the 338 and 396), these were design commonalities rather than mid-cycle generation changes for the SS433 itself. Both 1970 and 1971 Yamaha snowmobiles, including the SS433, utilized belt-drive oil pumps. A shift to a 7-port engine design occurred in subsequent years, but this was not a feature of the 1971 SS433. FAQ:

Q: How do I ensure I'm selecting the correct parts for my 1971 Yamaha SS433?

A: To guarantee compatibility, please use the year and model selector at the top of the page. This will filter parts specifically for your snowmobile.

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