Komatsu D21A-6

The Komatsu D21A-6 is a track type tractor built by Komatsu. Most units reaching the used market were built around 1990. It is common in the North American used market. About 18% of units have an enclosed cab, 43% of those with air conditioning. Units are highly standardised (consistency score 85). 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	1990
Used-market presence	common
Hours at resale	under 2,000 h
Enclosed cab	18% of units
Air conditioning	43% of enclosed units
Configuration consistency	85 / 100

How units are configured

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

Cab	OROPS 82% EROPS 10% EROPS w AC 8%
Transmission	Standard 73% Powershift 27%
Hydraulics	2 Valve 92% Standard 4% Base + 1 Function 2% Auxiliary 1%
Blade type	PAT 93% No 7% Straight 1%

Other Komatsu D21 variants

Model	Size	Built around	Used market	Enclosed cab
Komatsu D21PL-5	0-75 hp	—	rare	—
Komatsu D21PG	0-75 hp	—	rare	—
Komatsu D21PL-6	0-75 hp	—	rare	—
Komatsu D21P-5A	0-75 hp	1984	rare	—
Komatsu D21A-5	0-75 hp	1985	known	19%
Komatsu D21E-6	0-75 hp	1988	known	—
Komatsu D21P-6LGP	0-75 hp	1990	rare	—
Komatsu D21P-6	0-75 hp	1991	common	11%
Komatsu D21A	0-75 hp	1992	known	—
Komatsu D21P-7LGP	0-75 hp	1992	rare	—
Komatsu D21P-5	0-75 hp	1994	known	11%
Komatsu D21P-5LGP	0-75 hp	1995	rare	—
Komatsu D21A-7	0-75 hp	1996	common	12%
Komatsu D21P-7E	0-75 hp	1996	rare	—
Komatsu D21Q7	0-75 hp	1996	rare	—
Komatsu D21	0-75 hp	1997	rare	—
Komatsu D21A-7E	0-75 hp	1997	rare	—
Komatsu D21P	0-75 hp	1998	known	17%
Komatsu D21P-7	0-75 hp	1998	known	11%
Komatsu D21PL	0-75 hp	1998	rare	—

Full Komatsu D21 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.