The following are known Action Replay Codes for DK: Jungle Climber on Nintendo DS (NDS).

Game ID: ABUE-26604C80

Infinite Lives
2217056d 00000063

1-Up for Every Banana
12170168 00000063

Max Jewels
2217016a 00000063

Always Have 3 Crystal Stars
22170640 00000003

All DK Coins Found (Every Stage)
d5000000 00000001
c0000000 00000018
d8000000 0216ed49
d2000000 00000000
d5000000 00000001
c0000000 00000003
d8000000 0216ed65
d2000000 00000000

All Barrels Found (Every Stage)
021df948 01010100
021df94c 01010001
021df950 00010101
021df954 01010101
021df958 01010001
021df95c 00010101

5 Coins Found (Every Stage)
d5000000 0000001f
c0000000 00000018
d8000000 021dfad1
d2000000 00000000
d5000000 0000001f
c0000000 00000003
d8000000 021dfaed
d2000000 00000000