A more powerful Isuzu engine and optimized hydraulics improve arm and bucket digging forces on the ZX470LC-5, ZX670LC-5 and ZX870LC-5 over the ZX450LC-3, ZX650LC-3 and ZX850LC-3 models they replace. The Isuzu cooled EGR engine platform meets Tier 4 Interim emissions standards with a new exhaust filter consisting of a diesel oxidation catalyst/diesel particulate filter. A roomier cab features a heated, more comfortable air-suspension high-back seat with more than 10 in. of travel to slide with or independent of the joystick console. Three power modes, power boost and three years of ZXLink telematics carry over from the previous models.