The following items will work as a direct replacement

FT Silicone Diff Fluid, 1,000 cSt
Perhaps this alternate item will work for you: #5425.
This part fits the following vehicles
- SC10
- RC8
- RC8T
- RC8Te
- SC8
- SC8e
- RC8B
- RC8Be
- RC8.2
- RC8.2e
- SC8.2e
- ProLite 4x4
- SC10B
- RC10B4.2
- APEX Touring
- RC10T4.2
- Rival Monster Truck
- SC10.2
- RC10B5M
- RC10B5
- ProRally
- B44.3
- APEX Scion Racing FR-S
- APEX Lexus RC F
- APEX Scion Racing tC
- ProSC 4x4
- RC10T5M
- RC8B3
- RC10SC5M
- RC8B3e
- APEX Scion Racing 2015 FR-S
- APEX Scion Racing tC 2015
- TC7
- RC8T3
- RC8T3e
- RC10B6
- RC10B6D
- TC7.1
- RC10T4.3
- RC10F6
- SC10.3 Lucas Oil
- RC8B3.1
- RC8B3.1e
- RC12R6
- Nomad DB8 Limited Edition
- RC10B6 Club Racer
- SC10.3 JRT
- Reflex DB10
- Trophy Rat
- ProSC10
- RC10B6.1
- RC10B6.1D
- RC8T3.1e
- RC8T3.1
- RC10T6.1
- RC10SC6.1
- TC7.2
- RC10B74
- RC10B6.1DL
- Pro2 SC10
This part fits the following other parts
- #80926 - RC8B3 and RC8B3e Kit Bundle