The Generac GT-990 is a 10 kW Natural Gas (NG) / Liquid Propane (LP) standby generator set powered by a Generac V-twin GT-990 engine. It is available at 120 V, 3-phase, 60 Hz and rated 65.7 A. It holds about 1.7 L (0.4 gal) of oil. The set measures 1200×850×960 mm (47.2×33.5×37.8 in) and weighs about 437.5 kg (965 lb). An integrated tank holds 128 L (33.8 gal), roughly 9.6 hours of runtime.
Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.