Part #x871
Part #x871 is often known as Electric, Train 4.5V Whistle Control Block 4 x 8 x 2 with Forward/Stop Functions. We know this part is available in Bricklink and Rebrickable. You can buy it on Amazon or Bricklink.
Category
How to find this part
Name
Electric, Train 4.5V Whistle Control Block 4 x 8 x 2 with Forward/Stop Functions
Category
Electric, Train
Weight
28 gram
Size
? x ? x ?
Available variations
Name
Electric, Train 4.5V Whistle Control Block 4 x 8 x 2 with Forward/Stop Functions
Category
Power Functions, Mindstorms and Electric