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| Engine power | 330 hp |
| Scraper capacity (heaped) | 15.4 m³ |
| Maximum depth of cut | 13.4 in |
| Width of cut | 120 in |
| 1974 - 1976 | $13,750 USD to $24,999 USD |
| 1977 - 1982 | $16,500 USD to $26,500 USD |
| 1983 - 1986 | $28,750 USD to $60,000 USD |
Cat 621B, Two available, Good runners, C hitch clean and dry, Runs and operates good, Job ready
1980 Cat 621B Water Wagon, 14,057 Hours, Good shape, Starts up good, Tires have good tread, Fluids checked, Runs and operates well (video available upon request)
1981 Caterpillar 621B - Showing 6447 hours – probably not accurate - Orops - 29.5-35 Tires with front 60% and 40%, rear 65% and 65% - Cat 3406 engine - Cushion hitch – not sure if working - Shifted through gears...
1981 Caterpillar 621B - Showing 1793 hours – probably not accurate - 45P Series - Orops - 29.5-35 Tires with front 50% and 45%, rear 50% and 20% - Cat 3406 engine - Cushion hitch – not sure if working - Shifted ...
1987 CATERPILLAR 621B, OPEN CAB, Motor Scraper, runs and operates