Valtra S374 Tractor

The Valtra S374 was the flagship of the S Series, built at Suolahti, Finland, from 2015 to 2019. Its 8.4 L six-cylinder AGCO Power diesel produces 370 hp and can reach up to 400 hp with boost. In Britain, it was aimed at the largest arable operations and their highest-output field work.

Valtra S374 specifications

What the S374 is used for

Designed for the largest arable operations, the S374 was intended for high-output cultivation and other demanding field tasks. Its 8.4 L, six-cylinder diesel and continuously variable transmission suited sustained work where smooth speed control was important. The rear linkage has electronic control.

Today, it remains a specialist used working tractor rather than a smallholding machine. An original, well-documented example can also draw interest from Valtra followers at shows, but its scale and complexity make a full pre-purchase assessment particularly worthwhile.

Why the Valtra S374 stands out

The S374 has clear appeal as Valtra's S Series flagship of this period, with 370 hp and up to 400 hp with boost from an 8.4 L six-cylinder diesel. It represents the high-power end of Suolahti-built Valtras. Its continuously variable transmission and electronic controls make records, support and condition more important than superficial appearance.

Buying a used Valtra S374

Examine the 8.4 L AGCO Power diesel for correct starting, even running, excessive smoke, leaks and any oil-pressure concerns. Test the continuously variable transmission carefully and confirm smooth, consistent response. Check brake performance, hydraulics and the electronically controlled rear linkage. Inspect tyres, bonnet and cab panels, then verify service history, serial details, registration and originality. Have it inspected if unsure. Confirm figures and originality against TractorData.com and club records; values vary by condition, so check current listings rather than a fixed price.

Valtra S374 frequently asked questions

What is the power output of the Valtra S374?

The S374 produces 370 hp from its 8.4 L, six-cylinder AGCO Power diesel. With boost, output can rise to up to 400 hp, making it the flagship S Series tractor described here.

When and where was the Valtra S374 built?

Valtra built the S374 at Suolahti, Finland, from 2015 to 2019. It was the flagship of the S Series and was intended for the largest arable operations.

What transmission does the S374 use?

The S374 uses a continuously variable transmission, or CVT. A buyer should ensure that it responds smoothly and consistently during inspection, supported by credible servicing and ownership records.

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. Used tractor values vary by condition and region. Page updated 19 Sep 2026.

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