Nov 24 09:03:01 1999 From: Bill These are the bearings needed for the Dana 30 Timken numbers - first number is bearing or cone, and second number is race or cup M86610-M86647 Pinion rear HM86610-HM88649 Pinion front LM501314-LM501349 Diff Right Hand LM501314-LM501349 Diff Left Hand JLM603048F-JLM603013Z Hub bearing Inner JLM603048F-JLM603013Z Hub bearing Outer These are the seals needed for the Dana 30 National numbers 5778 (15788) Pinion Seal 4122 Inner Hub seal 470547 Optional Inner Hub seal 4019N Middle seal 3942 Outer seal -- Bill '88 JEEP XJ