3501-321 is a front companion flange specifically designed for the 2007-2017 Jeep JK Wrangler transfer case. This component is crucial for ensuring a secure connection between the transfer case and the driveshaft, particularly when converting to a 1350 series setup. With a bolt circle diameter of 4.250″ and a hub diameter of 1.943″, it provides the necessary fitment for reliable operation.
One of the standout features of the 3501-321 is its compatibility with various setups. It can be utilized with the 3594-2000U unwelded assembly or the 3594-2025 double cardan, both suited for 2.5-095 tubing. If a double cardan is not needed, this flange can also work with 1350 u-joint 3-2-1579 and 1410 u-joint 4102-1819 configurations, making it versatile for different builds.
When installing the 3501-321, it’s essential to ensure that the flange face is perpendicular to the rotational axis to prevent runout, which can lead to vibration issues. Here are some installation tips:
- Clean all mating surfaces thoroughly before installation.
- Torque bolts in a star pattern to ensure even pressure.
- Check the face runout after installation to confirm proper alignment.
In summary, the 3501-321 companion flange is a reliable choice for Jeep JK applications, providing the necessary dimensions and compatibility for various driveline configurations.
