Spicer S44 Series Greaseable U-Joint Kit — ISR Inside Snap-Ring, 1.125" Caps, 2.556" Span

Spicer 5-3147X is a greaseable S44 series universal joint kit with inside snap rings (ISR) engineered as a direct OE-equivalent drivetrain replacement.

Built to the original equipment standards, the Spicer S44 U-joint kit (part 5-3147X) gives you a serviceable, greaseable universal joint designed for reliable power transfer in a wide range of vehicles and applications. This kit uses inside snap rings for secure fitment and features 1.125-inch bearing caps and a 2.556-inch length between snap rings, matching OE tolerances for straightforward installation and long-lasting service life.

What exactly does the S44 Series Spicer U-joint replace?

This kit is a direct OE-equivalent replacement intended for driveshafts and yokes that accept an inside-snap-ring style joint. It replaces common OE references such as 2-3011, CP3147X, and RL3000, so it’s suitable where those numbers are specified.

• OE-style greaseable universal joint with inside snap rings
• Bearing cap diameter: 1.125 inches for proper fit
• Inside-to-inside length: 2.556 inches to match factory spacing
• Direct reference cross-compatibility: 2-3011, CP3147X, RL3000

How will this Spicer U-joint perform compared to an original part?

Manufactured to the same specifications as factory components, the Spicer S44 provides comparable strength and wear characteristics. The greaseable design helps maintain lubrication over time, while inside snap rings keep the caps firmly seated under load.

• Engineered to OE tolerances for fit and function
• Grease fitting allows periodic service for extended life
• Inside snap-ring retention for secure assembly under torque
• Durable bearing cups sized at 1.125 inches

How do I install and service the 5-3147X U-joint kit?

Installation uses standard U-joint removal and press-in procedures: remove the old joint, press out the bearing cups, position the new cross, and press in cups until snap rings engage. Because this is a greaseable joint, add lubricant through the fitting after installation and during scheduled maintenance.

• Fitment requires inside snap-ring yokes that accept a 2.556-inch between-snap-rings dimension
• Press-in installation and snap-ring seating are standard service operations
• Use proper tooling to avoid damaging bearing cups
• Grease periodically through the zerk fitting for longevity

What are the exact specifications I should confirm before ordering?

Verify the bearing cap diameter and the length between snap rings on your existing joint to ensure compatibility. Confirm that your application uses inside snap rings and that any reference numbers (2-3011, CP3147X, RL3000) listed by your vehicle or equipment match the replacement part.

• Bearing cap diameter: 1.125 inches (measure existing cap)
• Length between snap rings: 2.556 inches (inside-to-inside)
• Retention style: inside snap rings (ISR)
• Greaseable design — includes zerk fitting for maintenance

Who is this for? The Spicer 5-3147X S44 Series U-joint kit is aimed at mechanics, fleet technicians, restorers, and DIY vehicle owners who need a reliable, serviceable OE-equivalent replacement for driveshaft and yoke assemblies that use inside snap-ring joints. If you require a greaseable joint with precise OE dimensions (1.125" bearing caps, 2.556" between snap rings) and cross-reference compatibility with 2-3011, CP3147X, or RL3000, this Spicer kit is engineered to meet those needs without guesswork.