Great Northern ACF Aluminum 3-Bay Hopper #171444 ACF 3-Bay Aluminum Hopper SKU: 6-27491 Dimensions: Length: 11 1⁄4” Gauge: Standard O Scale price: 84.99 year: 2012 rail line: Great Northern Minimum Radius: O-31 Catalog Year: 2012 Catalog Title: Lionel 2012 Volume 2 Road Number: 171444 Die-cast metal sprung trucks and operating couplers Hidden uncoupling tabs Rotating bearing caps on trucks Extruded aluminum body Die-cast metal end platforms Separately applied details and piping Manuals Find the latest manuals in our support section. Replacement Parts Buy any replacement parts in our support section. Contact Contact a service station to fix your product