Production years
1956-1958
Massey Harris tractor ยท 1956-1958
Massey Harris 333 Tractor
The Massey Harris 333 is a mid-1950s row-crop tractor produced from 1956 to 1958, with a four-cylinder Continental engine and roughly 37 PTO horsepower. It is a capable final-era Massey Harris tractor with strong collector appeal.
Engine
Continental, 4-cylinder gasoline or diesel, 3.4 L
Power
37 PTO hp claimed; 37.26 drawbar hp tested
Weight
Approx. 6,000 lb
Massey Harris 333 specifications
| Production years | 1956-1958 |
|---|---|
| Engine | Continental, 4-cylinder gasoline or diesel, 3.4 L |
| Power | 37 PTO hp claimed; 37.26 drawbar hp tested |
| Transmission | 10 forward, 2 reverse gear transmission |
| Weight | Approx. 6,000 lb |
| Fuel type | Gasoline or diesel |
| PTO | Independent 540 rpm |
| Hitch | Category I three-point hitch |
What the 333 is used for
The 333 was designed for medium-farm work such as cultivation, mowing, planting, light tillage, and PTO-driven tasks. Its row-crop layout provided the visibility and maneuverability farmers expected in that class.
Owners now use them for light chores, mowing, parades, shows, and careful restoration projects. It is especially appealing to collectors because it represents the closing years of Massey Harris production.
Why the Massey Harris 333 stands out
The 333 combines practical row-crop capability with late Massey Harris styling and relative scarcity. Its simple mechanical layout and strong collector interest help make it a desirable vintage tractor.
Buying a used Massey Harris 333
Identify whether the tractor is gasoline or diesel before sourcing parts or evaluating its starting behavior. Check compression, oil pressure, cooling, fuel system, clutch, transmission, PTO, hydraulics, and steering. Inspect the serial tag, sheet metal, grille, and front-end configuration for originality, and confirm details with TractorData.com or serial-number records.
Massey Harris 333 frequently asked questions
How much horsepower does a Massey Harris 333 have?
It was rated at 37 PTO horsepower, with 37.26 drawbar horsepower recorded in testing.
What years was the Massey Harris 333 built?
It was built from 1956 through 1958.
Is the Massey Harris 333 suitable for small-farm chores?
Yes, a sound tractor is useful for light chores and mowing, but it is not a modern high-capacity tractor.
Specifications are commonly cited figures for general reference; exact figures vary by year and serial number, so confirm against TractorData.com and the machine's records. Values and prices of used tractors vary by condition and region. Page updated Aug 4, 2026.