Upgraded Design. The Dana Spicer 1330 Life Series U-Joint is designed as a direct replacement and upgrade for the factory made 1330-series U-joints. It runs 3.625 inches on both sides. This U-joint comes with a set of snap rings to provide better fit. This non-greasable u-joint is pre-lubricated for the life of the part and ensures a longer life and lower maintenance than a standard replacement. Premium Construction. The Dana Spicer 1330 life series U-joint is engineered from top-quality materials to withstand regular wear and tear better than stock. This life series part features a solid cold formed body and heat treated bearing caps for added strength and durability. This superior manufacturing will prevent wear and provide continued performance for the miles to come. Application. The Dana Spicer 1330 life series U-joint fits 1987-2014 Jeep Wrangler YJ, TJ, & JK models.