PART #2864L LM. Fits most 1997–1999 Chevy or GMC 2500 4X4 and 3500 2X4 or 4X4 Pickups.
Price is $326 + $200 refundable core charge + shipping and handling.
If you are looking for the 1500 2X4 or 4X4 or 2500 2X4 Pickups, then you need a 2864S LM. The difference between these two is whether you have a small or large housing. To see which one you have, there are casting numbers on the housing. If you have an 83, then you have a small housing, the 2864S. If you have an 84, then you have a large housing, the 2864L. If you order a 2864L (84 Housing) and return a 2864S (83 Housing), you will only be refunded partial core credit.
This gear is a 15:1 ratio and is stock. If you would like an 18:1, please order the 2864L LM4T.