As with our previous blog post relating to regearing Nissan diffs, this is a living document / brain dump and will grow as more content is added to it. This time, we are taking a look at the 2024+ Toyota Tacoma and the 2025+ Toyota 4Runner.
NOTE: The partnumbers referenced below pertain specifically to a 2025 Toyota 4Runner. The front differential has been cross referenced as shared between the 4GT and the 6G. The rear dropout assembly partnumbers are not shared between the 4GT and the 6G. The housings visually appear similar / same, but the pinion yoke flanges are different sizes - the Tacoma with aluminum driveshaft has a larger flange than the 4Runner with a steel driveshaft.
Toyota 8" Clamshell Front Diff
- Applications -
- 2024-Present Toyota Tacoma
- 2024-Present Toyota 250 Series Land Cruiser
- 2025-Present Toyota 4Runner
- Carrier Break - 3.73 Down / 3.91 Up
- Notes - Starting with the 4th gen Tacoma and the 6th Gen 4Runner, the casting for the differential housing is modified externally and utilizes different differential mounting brackets compared to that found in previous generations.
| Item | Qty Required | Toyota OE P# | Aftermarket P# |
| Carrier Bearing / Race | 2 | 90366-53013 | |
| Carrier Shims | 1 | ||
| Pinion Front Bearing / Race | 1 | 90366-30129 | |
| Pinion Rear Bearing / Race | 1 | 90366-35087 | Koyo TR070904-1-N |
| Pinion Shims | 1 | ||
| Pinion Nut | 1 | 90177-22003 | |
| Pinion Crush Sleeve | 1 | 41231-35040 | |
| Ring Gear Bolt | 10 | 90901-05002 | |
| Pinion Seal | 1 | 90311-41015 | |
| Drivers Side Seal | 1 | ||
| Passenger Side Seal | 1 |
Toyota 8.2" Rear Diff (Open Diff)
- Applications -
- 2024-Present Toyota Tacoma
- 2024-Present Toyota 250 Series Land Cruiser
- 2025-Present Toyota 4Runner
- Carrier Break - N/A
- Notes -
| Item | Qty Required | Toyota OE P# | Aftermarket P# |
| Carrier Bearing / Race | 1x / EA | 90366-50130 / 90366-50166 | Koyo STA5383 / |
| Carrier Shims | 1 | ||
| Pinion Front Bearing / Race | 1 | 90366-35157 | Koyo STA3574 |
| Pinion Rear Bearing / Race | 1 | 90366-40132 | Koyo ST4096 |
| Pinion Shims | 1 | ||
| Pinion Nut | 1 | 90179-22029 | |
| Pinion Crush Sleeve | 1 | 41231-35050 | |
| Ring Gear Bolt | 12 | 90105-11063 | |
| Pinion Seal | 1 | 90311-44008 |
Toyota 9.5" Rear Diff (coming soon)
Last edited - 2/4/26