The engine deck was redesigned with two large louvered doors that replaced the complicated grill work of the rear engine decks of the M48/M48A1 hull designs. This new rear hull arrangement on the M48A2 tank helped in cooling the engine and minimizing the infrared (heat) signature of the vehicle. The suspension system was simplified. The track tensioner arm was eliminated, modifications to the idler arm, the addition of bumper springs and friction snubbers, and a relocation of the air cleaner assembly. The number of return rollers was reduced to 3 per side. With the more compact AVI-1790-8 engine, additional fuel tanks were installed in the engine compartment, increasing fuel capacity to 335 gallons. Many older model M48A1s were rebuilt to this production configuration but retained their original 5 return rollers per side.