The following are known Action Replay Codes for Bomberman 64: The Second Attack! on Nintendo 64 (N64).

Device Compatibility: Action Replay & GameShark

Master Code – Must Be On
f1073ee42400

Maximum Health (Story Mode)
d108F9120005
8108F912000a
810ad7620005
810ad762000a

Infinite Health (Story Mode)
800ad75f000a

Fire Always at Level 3 (Story Mode)
800ad7330003

Bombs Always at Level 3 (Story Mode)
800ad7370003