Special Funnel is the eleventh episode ever made in Season 4.
It's wintertime and Peter Sam is still awaiting his new funnel, which, in his words, will be "something special". The other engines make fun of his talk about the new funnel. The weather soon becomes bad and there is a washout near the tunnel, so Rusty brings workmen to fix the bridge. As days go by, the weather changes and becomes frosty and cold. A few days later, the bridge is mended and Peter Sam is chuffing down the line with a passenger train. As he puffs through a tunnel, his cracked funnel is knocked off by an icicle in the tunnel and he has to use a discarded drainpipe for a funnel. Peter Sam's funnel eventually arrives and he discovers it makes his work easier. The engines do not make fun of Peter Sam's funnel anymore. They wish they had one like it.
- In a close-up of Peter Sam, his face is a different size. This is because a larger model is used.