Technic Engine Cylinder with Bottom Slots (2850b)

The Technic Engine Cylinder (Part 2850b) is a functional element designed to house moving pistons in mechanical builds. This "b" variant is distinguished by integrated bottom slots, which provide necessary clearance for crankshaft rotation and connecting rod movement. It is a foundational part for constructing realistic internal combustion engine replicas, ranging from single-cylinder motors to complex V8 configurations in large-scale vehicles.

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LEGO® parts are intended for builders aged 4 and up. They may pose a choking hazard for children under 3 years old.