The 131-0796 water pump is designed for 1980-1986 Nissan Datsun 720 models, featuring a bolt-on mounting style with aluminum or steel housing. It includes a fan clutch, gasket, and mounting hardware for easy installation. The drive type is belt-driven with a steel impeller and 6 impeller vanes for efficient water circulation. This vintage part is manufactured in Japan and has OE part numbers 21010-23025 and 21010-N8527, offering a reliable replacement option for engine cooling systems in these specific vehicle models.