This OEM Ski Doo 800 Etec/Ptek cylinder is re-manufactured with a lifetime plating warranty by the plating shop. This one has the larger exhaust manifold bolt holes. The casting number on the side is 6623242. A core charge of $75 has been included in the purchase price of this cylinder. We will refund the $75 core deposit once we receive your eligible core cylinder. Your core must be OEM. Broken skirts or significant casting damage (such as cracks into the water jacket) may not be eligible for core refund. We do not accept core cylinders that have been sleeved (iron liners installed). Please contact us if you have any questions about your cylinder or if your casting number does not match this cylinder. Shipping is only in the lower 48; unless you are purchasing through eBay's Global Shipping Program. If you are in Alaska please contact me before purchasing to check on shipping options. Thanks, -Paul