• Sign In
  • Create an Account
Toggle Nav
1-800-4-TRAINS
My Cart
Search
Search with Filters | Advanced Search | Search Tips
  • Sign In
  • Create an Account
    • Shop
    Account
    MTH Electric Trains
    Part # 507-2036801

    4-6-6-4 Challenger - 3-Rail w/Scale Wheels & Proto-Sound 3.0 -- Union Pacific #3943

    $1,599.95
    Out of Stock
    Availability: Sold Out
    Add to Wishlist
    Wishlist Instruction
    A wish list is a convenient way for you to keep track of products that you like, but are not ready to buy. Items from a wish list can be shared with others or added to the shopping cart.
    O
    Scale
    Union Pacific
    Walthers Part# 507-2036801
    MTH Electric Trains
    Part # 507-2036801

    4-6-6-4 Challenger - 3-Rail w/Scale Wheels & Proto-Sound 3.0 -- Union Pacific #3943

    main product photo

    Product Information

    No additional information is available at this time.
    Copyright © 2026 Wm. K. Walthers, Inc. All rights reserved.
    Trademark Information | Privacy Statement | Conditions of Use