Spicer 5-178X 1350 Series Greaseable Universal Joint (OSR Style)

Restore smooth power delivery, eliminate highway driveline vibrations, and maintain a fully serviceable drivetrain with this genuine Spicer 5-178X 1350 Series Universal Joint. Engineered as a high-durability, original equipment manufacturer (OEM) replacement component, this Outside Snap Ring (OSR) universal joint is designed to withstand heavy-duty rotational torque profiles across a wide range of trucks, SUVs, and performance vehicles.

On light-to-medium duty trucks and performance cars, the 1350 series is the industry-standard benchmark for high-strength drivelines. Over high mileage, severe towing, or demanding off-road trail riding, the internal needle bearings within the u-joint caps naturally experience wear, friction heat, and moisture contamination. A failing universal joint introduces structural slack into your driveshaft layout, manifesting as a persistent low-frequency chassis vibration, a rhythmic squeaking noise at low speeds, or a harsh metal clunk when shifting into drive or reverse. Replacing a worn joint before it seizes prevents catastrophic driveshaft separation, which can cause severe secondary damage to the transmission tailshaft housing, transfer case, or vehicle undercarriage.

Manufactured by Dana Spicer, the global leader in drivetrain engineering, the 5-178X features a forged high-strength alloy steel body built for excellent wear resistance and torsional rigidity under load. Unlike sealed alternative configurations, this classic universal joint is designed for long-term serviceability. It features a centralized grease zerk fitting that allows you to flush out trail water, dirt, and road salt while injecting fresh synthetic lubrication during routine maintenance intervals. Precision-ground and case-hardened bearing cups house high-density needle rollers and specialized multi-lip elastomeric rubber seals to ensure maximum grease retention and extended component life.

Kit Contents:

• (1) Genuine Spicer 1350 Series Greaseable Universal Joint Cross

• (4) Precision-Ground Bearing Cups with High-Density Needle Rollers

• (4) High-Tensile External Outside Snap Rings

• (1) Thread-In Grease Zerk Fitting

Kit Highlights:

• Fully Maintenance-Greaseable: Features an accessible grease zerk built right into the cross body, making it easy to purge contaminants and extend component life on heavily worked trucks, tow rigs, or off-road vehicles.

• Forged Structural Integrity: Fabricated from high-grade alloy steel and heat-treated for optimal grain structure density, maximizing torque capacity and resisting distortion under hard acceleration.

• Premium Multi-Lip Sealing: Outfitted with durable elastomeric cup seals that hold tight under grease gun pressure while providing an absolute barrier against environmental elements.

• Flawless OEM Tolerance: Precision-machined to exact factory blueprints to guarantee a smooth, vibration-free press-fit into your driveshaft yoke, transmission slip yoke, or pinion flange.

Drivetrain & Series Specifications:

• Yoke Retention Style: Outside Snap Ring (OSR) / External Lock-Up. Fits yokes designed for external retaining rings located on the outer side of the yoke ears.

• Series Identification: 1350 Series Driveline Architecture.

• Bearing Cup Diameter: 1.188 inches (30.2 mm).

• Cap-to-Cap Width: 3.625 inches (92.1 mm).

• Common Applications: Rear or front driveshaft positions on various half-ton, three-quarter-ton, and one-ton pickup trucks, lifted 4x4 vehicles, muscle cars, and custom hot rods running 1350 series yokes.