Heavy Duty 1810 Series Driveshaft Center U-Joint To Center Bearing = 44″ – Open u-joint to Midship End Yoke, Certified Driveshaft – OEM SPICER

DSS-1810EYC44 OEM Spicer 1810 Series Midship Driveshaft — 44" CL-to-Center Bearing

The DSS-1810EYC44 is an OEM Spicer 1810 series certified driveshaft section in open U-joint to midship end yoke configuration, with a center U-joint to center bearing dimension of 44 inches. This assembly serves as the front half of a two-piece driveshaft system: the open U-joint connects at the transmission or transfer case output, and the midship end yoke terminates at the frame-mounted center support bearing. The 1810 series specifies a 1.875-inch U-joint cap diameter; all mating yoke bores in the system must match this dimension.

The 44-inch CL-to-CB dimension positions this assembly for medium-to-long-wheelbase commercial truck applications. This measurement is taken from the front U-joint centerline to the center of the midship support bearing — it must correspond to the frame crossmember bracket centerline position at static ride height. A center bearing located 0.5 inches off the driveshaft centerline will produce angular misalignment that generates vibration proportional to driveshaft RPM. OEM Spicer Certified manufacture includes dynamic balancing to factory specification at the full 44-inch length. The 1810 series occupies the tier above the 1710 series in Spicer's capacity hierarchy and is specified for Class 6–7 truck and heavy vocational drivetrain applications where the 1710 torque rating is insufficient.

Specifications

• Part Number: DSS-1810EYC44
• Brand: OEM Spicer
• Series: 1810
• CL to Center Bearing: 44"
• U-Joint Cap Diameter (1810 series): 1.875"
• Configuration: Open U-joint to Midship End Yoke
• Assembly Type: Certified Driveshaft

Fitment & Installation Notes

Confirm the frame bracket center position measures 44 inches from the front U-joint centerline at ride height before ordering DSS-1810EYC44. Verify all mating yokes are bored to 1810 series specification (1.875" cap diameter). The midship stub shaft outer diameter must match the center support bearing inner bore — do not assume compatibility based on series designation alone; measure the shaft OD and bearing ID before assembly.

The 44-inch midship section is adjacent to 45-inch, 45.250-inch, and 43-inch variants in the 1810 series EYC product family. Each is a distinct part number corresponding to a specific OEM frame bracket position — do not substitute based on close proximity of dimensions. Confirm your specific vehicle's frame bracket drawing or measure in-vehicle before specifying DSS-1810EYC44.

Install with yoke ears in phase at both U-joint ends. Torque center support bearing bracket hardware to specification and verify the bearing housing seats flush. After installation, road-test and recheck for vibration at various speeds. If vibration is present and tracks with vehicle speed rather than engine RPM, recheck the CL-to-CB dimension and bearing bracket alignment before condemning other components.

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