This tank holds 25% more oil then factory oil tank. It bolts in stock location. All our HD oil tanks are built from .120 thick 5052 aluminum, internally baffled like stock tank, and extra compartrment is baffled from main compartment to keep oil from sloshing. CNC fittings, fully tig welded and pressure tested. Both dip stick and drain plug have been reloctated for easy access to checking oil and clean easy oil changes. This tank come standard with 12mm drain plug.  Included is 12mm drain plug and seal washer. Free Shipping to the lower 48 states, please contact me for shipping quote elsewhere