Lionel 2331261 O Scale Vision Line 4-8-8-4 Big Boy Steam Loco Union Pacific UP 4000 Mini Apprentice S aluminum (30)/ tall centered hollow

aluminum (30)/ tall centered hollow ball (2)/ tall offset hollow ball (2)/ bump steer adjustment shims

Road Number: SF-4

When connecting the program card

Smaller through hole from the side to allow more material for threads to engage the C-Hub or Lockout

Lionel 2331261 O Scale Vision Line 4-8-8-4 Big Boy Steam Loco Union Pacific UP 4000 Mini Apprentice S aluminum (30)/ tall centered hollowLionel 2331261 O Scale Vision Line 4 8 8 4 Big Boy Steam Loco Union Pacific UP 4000 Big Boy the locomotive needs no further introduction. Union Pacific's twenty five 4 8 8 4s have been turning heads and leaving lasting impressions since the day they first rolled out of the erecting shop. For all that has been said of their size, the Big Boys were just as impressive for their performance. Today, 4014 is the pride of the railroad and draws fans from