6984M Yamaha Mariner 1978-1989 Crankshaft 40 HP 2 Cylinder POLISHED

• This crankshaft has been professionally cleaned and inspected.
• We do this to ensure you are getting a great product at a great price.
• The way we clean our crankshafts, is that first we start with glass-beading the counterweights.
• From there, we move to polishing the bearing surfaces, to get the best inspection that we can.
• This particular crankshaft has no damage to the journals.
• The threads and the splines are both in great condition.
• There is some pitting where the lower bearing sits, but this will not affect the performance of this part.
• All in all, this will make a great replacement for your outboard!

Location: Southcentral Outboards, Altamont, Illinois

We have provided this cross-reference with the resources we have available in regards to fitment. This most likely will not fit every model for the years and horsepowers we have listed. We urge you to make sure this is the exact item you need by matching the part number to what is required for your motor. If you need help doing so, please contact us prior to purchasing and we would be happy to help!