Upgraded to Tier 4-Interim with an 11.9-liter engine, the 1221F is a 355-horsepower wheel loader
The HL730-9A has a 128-horsepower Cummins QSB4.5 engine that meets Tier 4-Interim standards
The Caterpillar 966M, 966M XE, 972M, and 972M XE wheel loaders have Tier 4-Final ACERT engines and XE advanced power trains, which Cat says results in 25 percent lower fuel consumption on average over traditional torque converter machines.
Model 70Z7 is a 3.7-cubic-yard wheel loader with an operating weight of 31,750 pounds
Caterpillar 980M and 982M wheel loaders have Tier 4-Final ACERT engines.