400m Heats - (M), Heat:2 of 4 ; Official result since 13:13
| Rank | Lane | ID | Name | PB | Team | Cat | Result | Info | Video |
| 1 | 8 | 132 | JOAN CAIDO | 47,62 | PHI | 47.99 | Q | ||
| 2 | 7 | 34 | EDI ARIANSYAH | 48,03 | INA | 48.75 | q | ||
| 3 | 2 | 223 | RAYMOND SCOTT LEE CHIAN HOONG | 50,18 | SIN | 50.01 | |||
| 4 | 3 | 235 | TAN ZONG YANG | 50,21 | SIN | 50.08 | |||
| 5 | 5 | 288 | CUNHA MANUEL | 50.96 | SLB | 51.58 | |||
| 6 | 6 | 219 | P. KURUMBEYAN | 52,19 | SIN | 52.31 | |||
| 4 | 268 | LOH GUO PEI | SWI | DNF |