Spicer 25-212X 1310 Series Greaseable Universal Joint with Cap-Mount Zerk (OSR Style)

Restore smooth operation, eliminate high-speed driveshaft vibrations, and maintain a fully serviceable drivetrain with this genuine Spicer 25-212X 1310 Series Universal Joint. Engineered as a high-durability, original equipment manufacturer (OEM) replacement component, this Outside Snap Ring (OSR) universal joint is designed to safely handle standard rotational torque profiles across a massive variety of classic muscle cars, passenger vehicles, light trucks, Jeeps, and SUVs.

On light-duty pickup trucks, performance vehicles, and 4x4 front or rear driveshafts, the 1310 series is widely trusted for its smooth operation and reliable power delivery. Over high mileage, intensive daily driving, or demanding off-road trail riding, the internal needle rollers within the u-joint caps experience natural friction wear, heat breakdown, and moisture exposure. A failing universal joint introduces structural slack into your driveshaft assembly, manifesting as a persistent low-frequency chassis vibration, a rhythmic squeaking noise at low speeds, or a harsh metal clunking sound when shifting into gear. Replacing a loose joint early helps prevent severe on-road component failure, protecting your transmission tailshaft, transfer case, and vehicle undercarriage from extensive secondary damage.

Precision-manufactured by Dana Spicer, the global benchmark in drivetrain technology, the 25-212X is forged from premium-grade alloy steel for outstanding fatigue resistance and high torsional rigidity. This specialized configuration features an accessible grease zerk fitting located directly on the face of one bearing cap rather than inside the center cross. This cap-mount design provides a massive advantage in tight-clearance applications where standard grease gun couplers cannot access a center zerk fitting, enabling you to effortlessly flush out road salt, moisture, and trail grime during routine maintenance intervals. Case-hardened bearing cups house precision needle rollers and robust multi-lip elastomeric rubber seals to maximize lubrication retention while keeping environmental contaminants permanently locked out.

Kit Contents:

• (1) Genuine Spicer 1310 Series Greaseable Universal Joint Cross

• (4) Precision-Ground Bearing Cups (Including 1 Cap Pre-Drilled for Grease Access)

• (4) High-Tensile External Outside Snap Rings

• (1) Thread-In Grease Zerk Fitting & Cap

Kit Highlights:

• Cap-Mount Zerk Innovation: Positioned on the face of the bearing cap for effortless grease gun access in restricted-clearance yokes where a standard center-cross zerk cannot be reached.

• Fully Maintenance-Greaseable: Enables quick purging of old lubricant and trail contaminants to drastically extend component lifespan on heavily worked trucks, tow rigs, or daily drivers.

• Forged Structural Rigidity: Fabricated from high-tensile alloy steel and heat-treated for maximum grain density, delivering excellent torque capacity under acceleration and everyday payloads.

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

Drivetrain & Series Specifications:

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

• Series Identification: 1310 Series Driveline Architecture.

• Bearing Cup Diameter: 1.062 inches (27.0 mm).

• Cap-to-Cap Width: 3.219 inches (81.8 mm).

• Common Applications: Front or rear driveshaft and steering positions on various classic muscle cars, older half-ton pickup trucks, and legendary Jeep models (CJ, Wrangler YJ/TJ, Cherokee XJ front shafts) running 1310 series yokes.