Heavy Duty Toyota Truck gear driven transfer case gear reduction housing.
On the 4.7 gears, the stock case must be machined or ground to provide clearance for the cluster gear. You can grind the necessary clearance; however, it is recommended to machine the case for this clearance.
If your not sure about this grinding or the machining process, Advance Adapters now offer a new heavy duty front Toyota housing. Advance Adapters new Toyota HD housing can be used as a crawler box with stock Toyota gears or with Advance Adapters Sumo low gear sets. It can also be used as a new front housing for the lower gear sets listed above. This housing will save you time and money. When installing Advance Adapters Sumo low gears into a stock Toyota housing, grinding & machining on the stock case is required. Advance Adapters housing has been engineered with additional clearance for Advance Adapters Sumo gear sets. Thus, hours of grinding & expensive machining labor are eliminated. This housing is made from 356-T6 heat-treated aluminum alloy with an average thickness of .550". A "stock" housing is die cast aluminum and only has an average wall thickness of .200".
Transfer Cases:
- Toyota Truck RF1A (21 Spline Input)
- Toyota Truck RF1A (23 Spline Input)
Heavy Duty Toyota Truck gear driven transfer case gear reduction housing.
On the 4.7 gears, the stock case must be machined or ground to provide clearance for the cluster gear. You can grind the necessary clearance; however, it is recommended to machine the case for this clearance.
If your not sure about this grinding or the machining process, Advance Adapters now offer a new heavy duty front Toyota housing. Advance Adapters new Toyota HD housing can be used as a crawler box with stock Toyota gears or with Advance Adapters Sumo low gear sets. It can also be used as a new front housing for the lower gear sets listed above. This housing will save you time and money. When installing Advance Adapters Sumo low gears into a stock Toyota housing, grinding & machining on the stock case is required. Advance Adapters housing has been engineered with additional clearance for Advance Adapters Sumo gear sets. Thus, hours of grinding & expensive machining labor are eliminated. This housing is made from 356-T6 heat-treated aluminum alloy with an average thickness of .550". A "stock" housing is die cast aluminum and only has an average wall thickness of .200".
Transfer Cases:
- Toyota Truck RF1A (21 Spline Input)
- Toyota Truck RF1A (23 Spline Input)
