SKU: WIN3700-2
MPN: 3700-2
The Winters Steel/Aluminum U-Joint Assembly (Model 3700-2) is a heavy-duty drivetrain component purpose-built for Chevy and Chrysler high-performance applications. This 16-spline to 4-bolt flange u-joint assembly delivers reliable torque transmission in demanding conditions where stock components fall short, making it essential for off-road recovery operations, drag racing, and modified vehicle platforms that exceed original equipment limits.
Built with steel and forged aluminum construction, this u-joint assembly utilizes Spicer greasable 5-153X joint design—a proven standard in high-torque applications. The combination of materials provides strength-to-weight optimization while the greasable design allows field maintenance without full component replacement. The 4-bolt flange configuration ensures secure attachment to transfer case or transmission output, critical when power levels climb beyond factory specifications. At 4.46 lbs with compact dimensions (5.1 × 4.9 × 8.45 inches), the assembly integrates into existing drivetrains without requiring structural modifications or custom fabrication.
This component serves operators maintaining lifted 4x4 trucks, operators upgrading driveline integrity for serious off-road duty, and enthusiasts building high-horsepower street or competition vehicles. Winters u-joint assemblies are selected when stock joints cannot safely transmit power—whether that's engine builds in the 400+ horsepower range, extreme terrain recovery work, or multi-vehicle tow scenarios. Field users appreciate the Spicer standard for parts availability and cross-compatibility across platforms.
The 16-spline to 4-bolt flange configuration makes this u-joint assembly compatible with specific Chevy and Chrysler driveline architectures; verify fitment against your vehicle's transfer case output and driveshaft input before ordering. Proper installation, torque specification adherence, and alignment are critical to longevity—incorrect fitment or installation will compromise performance and safety.
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