Heavy Duty SPL170 Series Driveshaft Slip Assembly Open U-Joint without Flange to Weld Yoke – Collapsed Center U-Joint To Center U-Joint = 35.500″ – Certified Driveshaft – OEM SPICER

DSSPL170-SA35.5 OEM Spicer SPL170 Series Slip Assembly — 35.500" Center-to-Center

The DSSPL170-SA35.5 is an SPL170 series slip assembly manufactured to OEM Spicer specifications. This pre-assembled unit consists of a weld tube yoke welded to a splined stub shaft that slides inside a splined outer housing, with the collapsed center U-joint to center U-joint dimension measuring 35.500 inches. The SPL170 series sits at the top of the Spicer heavy-duty torque capacity hierarchy, above SPL140 and SPL90, and is reserved for the highest-torque commercial and severe-duty drivetrain applications.

The SPL170 series uses a 2.165-inch cap diameter, which determines U-joint bore sizing throughout the assembly. Any yoke or U-joint connected to this slip assembly must be SPL170-compatible — substituting a 1810 series component into an SPL170 yoke ear will result in undersized cap engagement and immediate bearing failure under load. The 35.500-inch center-to-center measurement is the collapsed length from the front U-joint centerline to the rear U-joint centerline; confirm your vehicle's driveshaft tunnel clearance and suspension travel envelope against this figure before ordering. OEM Spicer manufacture ensures the tube weld joint, balance weights, and spline engagement meet original equipment specifications for torque capacity and rotational balance.

Specifications

• Part Number: DSSPL170-SA35.5
• Brand: OEM Spicer
• Series: SPL170
• CL to CL (Collapsed): 35.500"
• U-Joint Cap Diameter: 2.165"
• Assembly Type: Slip Assembly, Open U-Joint without Flange to Weld Yoke

Fitment & Installation Notes

Before installing the DSSPL170-SA35.5, measure the existing driveshaft CL-to-CL at ride height and at full suspension droop to confirm 35.500 inches falls within the operating range. The splined slip joint requires the mating slip yoke or splined bore to match the SPL170 spline profile — verify spline count and diameter at the stub shaft before assembly. When welding the yoke end to your driveshaft tube, confirm tube OD and wall thickness match the yoke bore specification; an off-center weld will cause balance issues that no static balancing can fully correct.

The SPL170 is Spicer's highest-capacity series in commercial use, rated for the torque demands of Class 7 and Class 8 trucks, heavy construction equipment, and severe-duty vocational vehicles. It supersedes the SPL140 in load capacity and is not found in light-duty or half-ton applications. If your application is a modified pickup or medium-duty truck previously running 1810 series hardware, SPL170 represents an upgrade in both U-joint cap diameter and overall assembly strength — but both the mating yokes and U-joints must be changed to SPL170 specification simultaneously.

Spicer-certified driveshaft assemblies are dynamically balanced to factory tolerances before shipping. Confirm the DSSPL170-SA35.5 installation phasing (yoke ears in phase, not out of phase) when connecting to the front and rear yokes — out-of-phase assembly causes a 2x-frequency vibration that increases with vehicle speed and is often misdiagnosed as a tire balance issue.

Explore related Slip Assembly components including SPL140 and 1810 series slip assemblies for alternative torque ratings.