The men traded the lead with the Netherlands before surging ahead in the third quarter of the 2,000m race, according to BBC.
The Netherlands tried to fight back but the British boat rose to the challenge and won by 1.08 seconds in five minutes and 22.8 seconds.
Cox Harry Brightmore climbed to his feet and roared with delight as the team celebrated a magnificent victory.
The eight of Sholto Carnegie, Rory Gibbs, Morgan Bolding, Jacob Dawson, Charlie Elwes, Tom Digby, James Rudkin and Tom Ford shared an emotional embrace when they finally came to shore.
“One engine, one machine,” was how Rudkin described the team’s ethos before the Games, and he was proved right as the crew added the Olympic title to their back-to-back world and European triumphs.
The successes on the final day of the rowing competition mean Britain finish with a record haul for an overseas Games of eight medals, and their best tally since London 2012, where they won nine on home water.
