906020-4 – Short Couple Driveshaft – 1710 (1.938 x 6.094) Series – 7.380″ Cl To Cl – — Flange To Flange

906020-4 Short Couple Driveshaft — 1710 Series, 7.380" CL to CL

The 906020-4 is a 1710 Series short-couple driveshaft assembly with a centerline-to-centerline U-joint distance of 7.380". The flange-to-flange dimension is not specified for this assembly, distinguishing the 906020 family from the 904657 family where F-to-F is the primary selection dimension. The 1710 Series uses 1.938" cap diameter U-joints with a 6.094" cross width. This assembly is designed for heavy-duty commercial truck interaxle and short-coupled flanged driveshaft applications in the Class 7–8 range. Factory balanced prior to shipment.

The 906020 family is defined by centerline-to-centerline measurement rather than flange-to-flange, which is the relevant dimension when the installation is measured from U-joint cross center to U-joint cross center rather than from companion flange face to flange face. This differentiation applies when the mating hardware uses a yoke configuration where the flange face depth varies or is non-standard. When ordering the 906020-4, measure the CL-to-CL distance in the vehicle between the two U-joint positions to confirm the 7.380" specification matches the installation requirement.

Specifications

• Part Number: 906020-4
• Series: 1710 (1.938" cap x 6.094" width)
• CL to CL: 7.380"
• Flange to Flange: Not specified
• Application: Heavy-duty commercial truck, interaxle shaft, short-couple flanged application

Fitment & Installation Notes

The 906020-4 is selected based on CL-to-CL measurement — the distance from one U-joint cross centerline to the other when installed in the vehicle. This measurement technique is used when the companion flange face-to-face distance cannot be reliably determined or when the application specifies CL-to-CL in the chassis documentation. The 1710 Series companion flange bolt circle, pilot diameter, and bolt torque must be confirmed against the axle or gearbox manufacturer's specifications. Do not mix 1610 and 1710 Series hardware — the 0.063" cap diameter difference between series (1.875" vs. 1.938") will cause failure if mismatched.

At 7.380" CL-to-CL, the 906020-4 covers interaxle applications requiring a slightly longer cross spacing than the -1 variant (6.620" CL-to-CL). The 1710 Series handles the torque loads generated by Class 7–8 vehicles at full GVW rating and is the appropriate selection for severe-duty tandem configurations, heavy vocational trucks, and construction vehicles operating on irregular terrain. Factory balancing ensures the assembly meets commercial vehicle vibration standards at rated operating speed.

The 906020-4 is one of two primary length variants in the 906020 1710 Series family — the 906020-1 covers the shorter 6.620" CL-to-CL application. Both variants use the same 1710 Series U-joint and flange yoke design. Confirm the CL-to-CL measurement from the vehicle or chassis specification before ordering. Explore related Short Couple Driveshaft assemblies including the 904657 flange-to-flange-defined family and 1610 Series configurations for lighter commercial applications.