906256-1 – Short Couple Driveshaft – 1610 (1.875 x 5.312) Series – 5.380″ Cl To Cl – — Flange To Flange

906256-1 Short Couple Driveshaft — 1610 Series, 5.380" CL to CL

The 906256-1 is a 1610 Series short-couple driveshaft assembly with a centerline-to-centerline U-joint dimension of 5.380". The flange-to-flange installed dimension is not specified, positioning this part within the 906256 CL-to-CL-defined 1610 Series family. The 1610 Series employs 1.875" cap diameter U-joints with a 5.312" cross width. This assembly is designed for medium and heavy-duty commercial vehicle interaxle and short-couple flanged applications where the U-joint cross spacing is 5.380". Factory balanced prior to shipment.

The 906256-1 is the shortest variant in the 906256 1610 Series family, with a CL-to-CL of 5.380" compared to the 906256-4 at 6.120". This 5.380" CL-to-CL is the same spacing found in the 906224-1 (9.120" F-to-F) and 906224-5 (10.000" F-to-F) — assemblies in the F-to-F-defined family with the same cross spacing but different yoke body depths. The 906256-1 is selected when the vehicle specification or measurement references CL-to-CL at 5.380" rather than a flange face distance, distinguishing it from the 906224 equivalents where flange face distance is primary.

Specifications

• Part Number: 906256-1
• Series: 1610 (1.875" cap x 5.312" width)
• CL to CL: 5.380"
• Flange to Flange: Not specified
• Application: Medium/heavy-duty commercial truck, interaxle shaft, flanged short-couple application

Fitment & Installation Notes

Measure the CL-to-CL distance in the vehicle to confirm the 906256-1 is the correct length selection. At 5.380" CL-to-CL, this is the shortest in the 906256 family — if the chassis requires 6.120", the 906256-4 is the correct selection. The 1610 Series U-joint cap (1.875") must match the bored dimensions of the companion flange yoke ears — if the vehicle has mixed 1610 and 1710 Series components, verify the cap diameter before installation. The companion flange bolt circle, pilot diameter, and bolt torque specification must be sourced from the axle OEM documentation.

The 1610 Series is catalogued for Class 6 medium-duty trucks and certain vocational applications requiring torque capacity above the 1480 Series (1.375" cap) but below the 1710 Series (1.938" cap). Short-couple assemblies in this series are non-adjustable and non-telescoping — the 5.380" CL-to-CL is fixed. Factory balancing ensures the 906256-1 meets commercial vehicle NVH requirements at the operating speed range for 1610 Series applications. All short-couple assemblies must be installed with companion flanges that are clean, undamaged, and properly torqued.

The 906256-1 is the shortest CL-to-CL variant in the 906256 1610 Series family. Both 906256 variants (906256-1 and 906256-4) share the same U-joint and flange yoke design. Confirm 5.380" CL-to-CL against the vehicle measurement before ordering. Explore related Short Couple Driveshaft assemblies including the 906256-4 at 6.120" CL-to-CL, the flanged 906224 family defined by F-to-F, and the 814119-1S for longer 1610 Series CL-to-CL applications.