NP231 Rear Output Yoke Seal Fits 1997 to 2002 TJ Wrangler;Fits 1997 to 2001 XJ Cherokee;With NP231 transfer case;Also, replacement output shaft oil seal for SYE-231 kit Crown Automotive Crown Automotive NP231 Rear Output Yoke Seal - RT24003 RT24003 Transfer Case Seal