Komatsu D31EX-21

The Komatsu D31EX-21 is a track type tractor built by Komatsu. Most units reaching the used market were built around 2005. It is known in the North American used market. About 70% of units have an enclosed cab, 75% of those with air conditioning. Units are offered in many configurations (consistency score 65). Typical hours at resale: under 2,000 h.

Overview

Manufacturer	Komatsu
Type	Track Type Tractors
Category	Track Type Tractor, Dozer
Size class	0-75 hp
Built around	2005
Used-market presence	known
Hours at resale	under 2,000 h
Enclosed cab	70% of units
Air conditioning	75% of enclosed units
Configuration consistency	65 / 100

How units are configured

Share of units observed in the used market with each option.

Cab	EROPS w AC 52% OROPS 30% EROPS 18%
Hydraulics	2 Valve 77% Standard 13% Base + 1 Function 10%

Other Komatsu D31 variants

Model	Size	Built around	Used market	Enclosed cab
Komatsu D31P15	0-75 hp	—	rare	—
Komatsu D31A-16	0-75 hp	1979	known	12%
Komatsu D31P16LGP	0-75 hp	1979	rare	—
Komatsu D31-16	0-75 hp	1980	rare	—
Komatsu D31A	0-75 hp	1980	rare	—
Komatsu D31P16	0-75 hp	1980	common	13%
Komatsu D31P-17	0-75 hp	1984	common	13%
Komatsu D31	0-75 hp	1985	common	21%
Komatsu D3117	0-75 hp	1985	rare	—
Komatsu D31E17	0-75 hp	1987	rare	—
Komatsu D31A-18	0-75 hp	1990	known	—
Komatsu D31P-18	0-75 hp	1990	common	9%
Komatsu D31LGP	0-75 hp	1990	rare	—
Komatsu D3118	0-75 hp	1990	rare	—
Komatsu D31P18LGP	0-75 hp	1990	rare	—
Komatsu D31E18	0-75 hp	1991	known	29%
Komatsu D31P18A	0-75 hp	1991	common	9%
Komatsu D31P	0-75 hp	1992	common	13%
Komatsu D31E	0-75 hp	1993	known	20%
Komatsu D31P17LGP	0-75 hp	1994	rare	—

Full Komatsu D31 series →

Comparable machines from other brands

Model	Make	Size	Built around	Used market	Enclosed cab
Caterpillar D3B	Caterpillar	0-75 hp	1984	very common	6%
John Deere 450H	John Deere	0-75 hp	2001	very common	8%
Caterpillar D3CIII	Caterpillar	0-75 hp	1996	very common	6%
Caterpillar D3CIIILGP	Caterpillar	0-75 hp	1997	very common	6%
John Deere 450	John Deere	0-75 hp	1980	very common	2%
Caterpillar D3	Caterpillar	0-75 hp	1977	common	4%
Caterpillar D3BLGP	Caterpillar	0-75 hp	1984	common	4%
Caterpillar D3C	Caterpillar	0-75 hp	1989	common	6%

Source

Configuration profiles derived from North American auction records, used with the data owner's permission. Figures describe units observed in the used market, not factory specifications.