Tickets for the Premier League trip to Sunderland on Saturday 15 April are now on sale to Claret Members.
The Hammers travel to the north east aiming to complete a league double, after Winston Reid's last-gasp strike saw off the Black Cats at London Stadium in October.
Following the end of the priority period for Season Ticket Holders, Claret Members now have an exclusive window to buy their tickets until 9am on Friday.
Subject to availability, tickets would then on on General Sale.
Click here to purchase your tickets now.