Spicer 1350-Series Greaseable U-Joint Kit 5-178X (OSR) — 1.188" Caps, 3.625" Span for Driveshafts

Spicer 5-178X is a greaseable 1350-series outside-snap-ring universal joint kit engineered as a direct OE-style replacement for driveshaft applications.

This Spicer U-joint kit (part 5-178X) provides the exact dimensions and construction expected from original equipment, including a 1.188" bearing cap diameter and a 3.625" outside-to-outside span. Built to Spicer’s OEM standards, the kit is greaseable and uses outside snap rings (OSR) for secure retention. It replaces items listed as 2-0053, CP178X, and 331 and is suitable for a variety of light- and medium-duty vehicle driveshaft repairs where the 1350 series is specified.

What dimensions and specifications should I confirm before ordering?

Match three key measurements: bearing cap diameter, bearing cap-to-cap span, and snap ring style. These dimensions determine fitment in yokes and ensure proper clearance and rotation.

• Bearing cap diameter: 1.188 inches
• Outside-to-outside span: 3.625 inches
• Series: 1350 (heavy-duty driveshaft family)
• Retention: outside snap ring (OSR) configuration

How does this Spicer U-joint perform during maintenance and service?

The 5-178X is greaseable, allowing periodic lubrication to extend service life and maintain smooth operation. Grease fittings and snap-ring retention make replacement and routine service straightforward for technicians and DIYers.

• Greaseable cross for scheduled lubrication
• Outside snap rings for visible, secure retention
• OE-equivalent tolerances for simple swap-in installation
• Compatible with standard service tools for press-in/out installation

Which vehicles and applications commonly use the 1350 series Spicer U-joint?

The 1350 series fits many light- and medium-duty trucks, SUVs, and aftermarket driveshaft assemblies that require higher torque capacity than smaller series joints. Always verify by VIN, service manual, or existing U-joint stamps to ensure correct application.

• Common in heavy-duty light-truck and SUV driveshafts
• Used where larger bearing cup capacity is required
• Appropriate for many OEM replacement scenarios
• Cross-reference numbers: 2-0053, CP178X, 331

What should I expect during installation and what tools are needed?

Installation typically requires a press or a suitable bench vise, sockets or U-joint removal tools, and basic hand tools. Inspect yokes for wear and clean mating surfaces; replace any damaged components to prevent premature failure.

• Press or vise for bearing cup installation/removal
• Sockets or drift to support cups during pressing
• Grease gun for initial and periodic lubrication
• Torque and alignment checks per vehicle service manual

Who is this for: The Spicer 5-178X U-joint kit is intended for mechanics, fleet service technicians, and knowledgeable DIY enthusiasts who need a durable OE-style replacement for 1350-series driveshafts. It suits anyone replacing worn universal joints in compatible trucks, SUVs, or aftermarket driveshafts who wants greaseable serviceability and reliable outside-snap-ring retention.

Features:

• Spicer greaseable universal joint with snap rings
• Outside Snap Ring Style (OSR)
• 1350 Series
• Bearing Cap Diameter: 1.188 inches
• Bearing Cap to Bearing Cap: 3.625 inches
• Spicer genuine OE replacement
• Outside snap rings
• Outside to outside dimension: 3.625 inch
• Bearing cup size: 1.188 inch
• 2-0053, CP178X, 331