Upgraded with the Tier 4-Final Cat C4.4 ACERT engine, the D3K2, D4K2 and D5K2 dozers are rated at 80, 92 and 104 horsepower, respectively.
The 1050K crawler dozer has a base weight around 95,000 pounds and a 350-horsepower PowerTech Tier 4-Final diesel.
Models 750K and 850K crawler dozers have been upgraded with a PowerTech 6.8-liter Tier 4-Final diesels with 165 and 205 horsepower, respectively.
The D155AX-8 crawler dozer has an operating weight of 89,300 pounds and is powered by a 354-horsepower Komatsu SAA6D140E-7 diesel
Cat D8T dozer has maximum power of 312 horsepower with a Tier 4-Final, Cat C15 ACERT engine