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Challenger 660 – specifications

Series: Other models

Build year not documented · Data origin: Directory data · sources

Source: pagelarge.com
The 660 comes from Challenger. The engine delivers 223.7 kW. Rated speed is 2,100 rpm. The tank holds 605.7 litres. The engine fitted is the C9 8,8L. Rated output across the Challenger range ranges from 16.8 to 470.5 kW; the 660 sits in the middle of that range with 223.7 kW. Its immediate neighbours are the MT685D below it with 220 kW and the MT755B above it with 224.5 kW. 155 Challenger models across 11 series are on record.

Challenger combines 660, 670 and 680B

Challenger was originally a Caterpillar brand. From 1999 Claas worked with Caterpillar and sold Lexion combines in North America under the Cat name; in 2002 Claas took over 50% of the joint venture and US combine production. When Caterpillar sold the Challenger line to AGCO, it also sold its share of the combine business back to Claas.

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The 660B is a Class 6 machine, the 670B Class 7 and the 680B Class 8; quoted outputs are about 300, 350 and 425 hp.

Listed in the register: Challenger 660, Challenger 670 and Challenger 680B.

Sources: AgWeb Challenger combines, Wikipedia Claas Lexion

Technical data

Engine

Engine modelC9 8.8Lcorrect
Power223.7 kWcorrect
Rated speed2,100 rpmcorrect

Drivetrain and chassis

Gearbox type4-Speed hydrostatic transmissioncorrect

Working data

Fuel tank capacity605.7 lcorrect

Frequently asked questions

How much power does the Challenger 660 have?

The Challenger 660 delivers 224 kW.

What to check before buying

  • Check the hour meter against the service records — a replaced instrument is the most common gap.
  • Compare the data plate and chassis number with the papers.
  • Ask about parts availability for this build year — the running costs hang on it.

A general list for this type of machine — no substitute for an inspection or an appraiser.

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This page carries 5 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.​‍‌⁠⁠‍‍‌‌‌‍​‍‍‌​‌⁠⁠⁠

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Sources: RitchieSpecs equipment specifications (retrieved August 2026) · Data sources and cross-checks

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