Spicer U-Joint Kit S44 Series ISR — greaseable OE-fit universal joint, 1.125in bearing cap, 2.556in spacing

Built to Spicer's factory specifications, the 5-3147X U-joint kit restores dependable rotational coupling where driveshafts meet transmission or axle yokes. This ISR (inside snap ring) design and greaseable bearing cups make it straightforward to service and install while matching the critical dimensions OEM systems require for fit and function.

How does the Spicer 5-3147X fit into existing driveline setups?

The 5-3147X is sized to meet inside-to-inside and bearing-cap diameter standards common to S44-series applications, so it installs in place of the original U-joint without modifications to the yoke. Check the two key dimensions—bearing cap diameter and length between snap rings—before ordering to ensure a correct fit.

• Bearing cap diameter: 1.125 inches for correct bore fit.
• Inside-to-inside length: 2.556 inches matching S44 spacing.
• Inside snap ring retention (ISR) for factory-style seating.
• Greaseable cups for periodic lubrication and extended service life.

What makes this Spicer U-joint a reliable replacement option?

Spicer manufactures this kit to the same tolerances and materials used in original equipment, which reduces the risk of premature wear or misfit. The greaseable bearings and snap-ring retention provide both serviceability and secure seating under rotational loads.

• Genuine Spicer OE replacement quality for consistent tolerances.
• Grease fitting compatible with routine maintenance schedules.
• Snap-ring style secures caps inside yokes to prevent lateral movement.
• Durable construction intended for a range of vehicle applications.

How do I install and maintain the 5-3147X U-joint safely?

Installation follows standard U-joint replacement procedures: remove the old joint, press out the bearing cups, seat the new cups and snap rings, then verify free joint movement. After installation, apply grease through the zerk fitting until fresh lubricant appears at each seal to ensure full coverage.

• Press-fit installation of bearing cups using appropriate tool or press.
• Seat inside snap rings into yoke grooves to lock cups in place.
• Grease with recommended driveline lubricant via grease fitting.
• Check for smooth rotation and absence of binding before final reassembly.

Which part numbers and cross-references relate to this kit?

The Spicer 5-3147X is also associated with cross-reference numbers used in aftermarket and OEM catalogs, making it easier to confirm compatibility when replacing older or differently labeled parts.

• Spicer designation: 5-3147X, S44 Series.
• Common cross-references: 2-3011, CP3147X, RL3000.
• Inside Snap Ring Style (ISR) compatibility ensures match with ISR yokes.

Who is this for? Mechanics, fleet technicians, and DIY enthusiasts who need a direct-fit, greaseable U-joint for S44-style drivelines will find the Spicer 5-3147X an appropriate choice. It suits vehicles and equipment that require an inside-snap-ring retention, 1.125-inch bearing cups, and a 2.556-inch inside-to-inside length. Choose this kit when you want a genuine Spicer OE-replacement part with serviceable grease fittings and factory-level tolerances for dependable driveline performance.