3326-405A – Weld Yokes – 1330 Series – Butt Dia 3.844″ – Tube Dia Wall 4.000X0.083

Q: What is the difference between 3326-405A and 3326-40A? A: Both are 1330-series aluminum weld yokes for 4.000" OD tube with 0.083" wall. The suffix "-5" in 3326-405A indicates a slightly different bearing bore or cap retention configuration. Butt diameter on the 405A is 3.844" versus 3.853" on the -41A, reflecting a tighter fit for a different tube ID tolerance. Q: Can I use this yoke on a steel tube? A: Yes, but dissimilar-metal welding requires proper technique. Use an ER4043 filler compatible with the aluminum yoke alloy and preheat the steel-to-aluminum interface carefully. In practice, most builders pair an aluminum weld yoke with an aluminum tube to avoid galvanic corrosion at the weld joint. Q: What Spicer cross is compatible? A: The 1330-series cap diameter of 1.062" is compatible with Spicer 5-153X and Dana 1330 series crosses. Verify snap-ring versus wing-bearing retention before assembly. Q: What torque rating applies? A: The 1330-series interface is rated to approximately 1,400 ft-lb continuous. Aluminum tube wall of 0.083" on a 4.000" OD provides adequate torsional strength for most light-truck and performance applications below 800 hp.