This is a Genuine Toyota 23-spline Automatic Transfer Case Input Gear for 2005 through 2024 VF Chain Drive Transfer Case assemblies.
This is one of two required components in order to fit a TacoBox in front of a 2005-2024 transfer case from a 4.0L or 3.5L 6cyl manual transmission application, which originally had a 22-spline t/case input. The other required component is a 23-spline Input Cover Housing.
This t/case input has a male 23-spline design, and comes with a female-female coupler pre-pressed in place from the factory. You’ll need to un-press and remove this coupler so that only the splines are exposed as shown in the additional pictures, so that the input is converted to a male type engagement which is required to fit behind our TacoBox which has a female output so that the result is as so: Transmission Female Output > Male Input TacoBox Female Output > Male Input T/Case.
Remove your 6MT (6-speed manual transmission) t/case input and replace it with this Automatic transmission t/case input and now you’re transfer case is ready to be installed behind our Dual Case TacoBox Crawler!
Alternatively, you could find a good used chain drive transfer case from an automatic model, and simply swap your entire t/case out. This avoids having to open up your manual t/case to install this input gear.
MSRP at Dealership is $394.72 (as of 6/6/2025)
Additional Factory References
Below are guides to help with swapping out the input. (PDF files)










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