Brand New Differential Bearing and Seal Kit. You will receive one differential kit to replace the rear differential kit on the following: 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Yamaha Kodiak 400 YFM400 4x4, 2000 2001 2003 2004 Yamaha Kodiak 400 YFM400 2x4. These are for the internal defferential not outer axel bearings. We work in conjunction with manufacturers and distributors to acquire the best products at the best prices, which we pass on to you, our customers. All items are new and in usable condition, guaranteed to fit the models listed and the most affordable aftermarket parts you will find online. Customer Service Hours: Monday - Friday 9 am - 5 pm EST.