Volvo Penta D7 is an in‐line 6‐cylinder, 7.2‐liter, six‐hole fuel‐injected diesel genset engine with turbo and air‐cooled exhaust manifold. The TAD731GE is available in three versions: 50 Hz/1500 rpm, 60 Hz/1800 rpm, and 400 Hz/2000 rpm for prime and standby power generation.