The localized replacement of only a single wheel bearing on a Toyota Tundra typically requires 2-3 hours of a trained technician, including the removal and pressing of the hubs, with both ends potentially requiring up to 4-6.6 hours to replace both of them in 4WD models. The replacement cost including time of this wheel bearing depends on rust or accessibility of tools, DIYers may increase it twice without a 20 tons press. Rears should be expected to perform poorly at 4-5 hours per side; when it comes to keeping Tundra performing off-road, alignment after the job must be considered. Also read https://advisorwheels.com/wheel-bearing-replacement-cost/