3-28-557U – Weld Yokes – 1410 Series – Butt Dia 2.844″ – Tube Dia Wall 3.500×0.095

The 3-28-557U is the 3.500"x0.095" variant in the 1410 Spicer series. Like the 3-28-97U (3.000" tube), the butt diameter appears smaller than the expected step-down from tube wall: 3.500" - 2x0.095" = 3.310" bore, but butt diameter is 2.844" -- a 0.466" step. This confirms a stepped-bore yoke design where the pilot diameter is significantly smaller than the tube bore, engaging a different portion of the tube interior. This design is found on some OEM Chrysler/Dodge applications where the tube bore steps internally. Verify the tube bore profile on your specific vehicle before ordering.

• 1410 series: 1.188" U-joint cap -- confirm before sourcing complement joint
• 3.500" x 0.095" tube with 2.844" stepped butt -- not a standard flush-pilot yoke; tube must have matching internal step
• 2.125" CL-to-weld -- same as 3-28-97U; consistent Spicer 1410-series geometry across tube sizes
• "U" suffix: OEM specification designation for this Spicer part
• This weld yoke is appropriate for 3/4-ton and light 1-ton truck driveshaft applications in the Chrysler/Mopar catalog

If the tube bore on your replacement driveshaft tube does not match the 2.844" stepped pilot of the 3-28-557U, use the non-stepped variant 3-28-557 instead, which uses a 3.344" flush pilot for a standard 3.500"x0.083" tube. Attempting to weld a stepped-pilot yoke into a non-stepped tube will result in a loose fit and weld failure.