The P-51H can rightly be considered the apex of the P-51 Mustang. The P-51H was an evolution from the lightweight Mustang experiments conducted in 1944. The biggest addition to the P-51H was the Packard Merlin V-1659-9. It featured an automatic boost control system and water injection. With water injection enabled, the V-1659 could produce a whopping 2,000+ hp although only for short bursts. The P-51H also featured extensive airframe modifications like a shorter carburettor air intake and longer fuselage. In preparation for the upcoming invasion of Japan, around 2,000 P-51Hs were ordered. However, the war was nearing its end and many orders were canceled. The P-51H would never see combat in either the Pacific or European theatres.

Introduced in Update 1.71 "New E.R.A.", the P-51H-5-NA is an extremely dangerous aircraft. The combination of the powerful Merlin engine and lightweight airframe makes the P-51H a capable dogfighter. It also excels in boom and zoom tactics against enemy planes thanks to the various airframe improvements. Much like the other Mustang variants, the P-51H comes equipped with six M2 Browning machine guns and various loadouts of bombs and rockets. Players will be greatly satisfied with the P-51H's capability against enemy aircraft and ability to attack ground targets.