2003 Horizon Itasca Class a motorhome. This motorhome has two slide outs and currently 67,000 miles. We just had advanced fleet service change the oil and recharge the ac. Engine is a 330 Caterpillar 3126/CFE Diesel 7.2 I6 Air Model Number is 2003 Itasca Horizon W/2 Slides (39QD)