Union Pacific 'Challenger' Production Details 

The turret configuration for each of the three locomotive production orders was slightly different and that has been reflected in our models based on their road number. In addition, later 'shopping' added some additional equipment which is also included in our builds. The example above is a late coal configuration and includes the additional blowdown oil separator located between the large kidney shapes manifolds you see under the hatch. The hatch covers are locked down using prototypical functioning latches.