The Harley Davidson Two-Cycle Crankshaft Seal at Buggies Unlimited is about step 15 or 16 in a rebuild kit. To be honest, without looking at the OEM Columbia service manual, we could not tell you when that was supposed to go on. That is why your sales rep will more than likely recommend that you get one with this order. However, they may forget to make that call out if you ask just for this golf cart part. The chances that just this are very slim. You will need to replace several other things along the way.We have entire rebuild kits that include The Harley Davidson crankshaft seal and just about everything else except the kitchen sink. If we could figure out a way to fit it in the box, we would have sent that too. We are trying to make that the packages we put together are comprehensive. So much so that they do not lack anything that is still available. We also have different levels of these groupings that allow you to do just the top end, the whole Columbia engine, or anything in between. You make the call on how extensive.Installing the golf cart crankshaft seal is not a difficult thing to pull off. You will need to go in prepared, however. Ensure that you pick up an OEM Harley Davidson service manual covering your model. This book will walk you through this repair and many others. It is the first tool you should buy for your golf cart.Buggies Unlimited is the best of the best for carrying what you need. What we mean is, we have all the golf cart hard parts and accessories at discount prices right here under the same roof. Heck, we even price match! Call us today.