The broader NSE Nifty too closed above the 10,300-mark.
Optimistic buying in blue-chip stocks ahead of release of industrial production and retail inflation data later this week drove stocks higher.
Participants are also betting on a favourable result for the Bharatiya Janata Party (BJP) in the Gujarat assembly polls, which added to the buying momentum, brokers said.
The Sensex opened strong at 33,317.72 and touched a high of 33,535.97, but settled at 33,455.79 due to profit-booking, still showing a gain of 205.49 points, or 0.62 per cent.
The gauge had risen by 653.12 points in the previous two sessions.
The 50-share NSE Nifty ended 56.60 points, or 0.55 per cent, higher at 10,322.25 after shuttling between 10,329.20 and 10,282.05.
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