Heavy Duty 1810 Series Driveshaft Center U-Joint To Center Bearing = 33.250″ – Open u-joint to Midship End Yoke, Certified Driveshaft – OEM SPICER

DSS-1810EYC33.250 OEM Spicer 1810 Series Midship Driveshaft — 33.250" CL-to-Center Bearing

The DSS-1810EYC33.250 is an OEM Spicer 1810 series certified driveshaft section configured as an open U-joint to midship end yoke, with a center U-joint to center bearing dimension of 33.250 inches. This assembly represents the front half of a two-piece driveshaft system: the open U-joint end connects at the transmission or transfer case output, and the midship end yoke terminates at the center support bearing that mounts to the vehicle frame crossmember. The 1810 series U-joint uses a 1.875-inch cap diameter — do not interchange with 1710 (1.938") or 1610 (1.875") hardware without confirming bore compatibility in the mating yokes.

The 33.250-inch center-to-center bearing dimension is the critical measurement for this assembly: it represents the distance from the open U-joint centerline to the center of the midship bearing. This measurement must align with your vehicle's frame-mounted bearing bracket position. Even a 0.250-inch discrepancy in this dimension will put the center support bearing in a bind or allow excess stub shaft movement, both of which cause vibration and accelerated bearing wear. OEM Spicer manufacture includes dynamic balancing to factory specification across the full assembly. The 1810 series is the standard heavy-duty configuration for Class 6–7 trucks and heavy commercial vehicles where the 1710 series does not provide sufficient torque capacity.

Specifications

• Part Number: DSS-1810EYC33.250
• Brand: OEM Spicer
• Series: 1810
• CL to Center Bearing: 33.250"
• U-Joint Cap Diameter (1810 series): 1.875"
• Configuration: Open U-joint to Midship End Yoke
• Assembly Type: Certified Driveshaft

Fitment & Installation Notes

Before ordering DSS-1810EYC33.250, measure the distance from the front U-joint centerline to the center of your existing center support bearing bracket with the vehicle at ride height. This 33.250-inch figure must match your frame bracket position. Verify that the midship end yoke U-joint bore matches 1810 series cap diameter (1.875") — the mating yoke on the rear driveshaft section must also be 1810 series. Confirm the center support bearing ID matches the midship stub shaft OD before assembly.

The 1810 series occupies a tier above 1710 in Spicer's torque capacity hierarchy. It is standard equipment on medium-to-heavy commercial trucks, tandem-axle configurations, and some severe-duty single-axle applications. If the existing driveshaft uses 1710 series components, do not mix series — replace both the front and rear driveshaft sections and the mating yokes simultaneously to maintain uniform torque rating through the entire drivetrain loop.

Phasing is critical on two-piece driveshaft installations. The yoke ears at the open U-joint end and the midship end yoke must be in phase (yoke ears aligned in the same plane) unless your specific vehicle geometry calls for a specified phase angle. Out-of-phase installation of DSS-1810EYC33.250 produces a driveline vibration that increases with vehicle speed and load.

Explore related Certified Driveshaft assemblies including 1810 series rear sections and matching center support bearing assemblies.