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Set 42112 Cement Mixer
Technic

Cement Mixer

The Cement Mixer is a Technic truck built from 1,161 pieces and 128 unique parts, designed around a turning mixer drum rather than minifigure play. No minifigures come with the set, keeping the focus entirely on mechanical function. Black, blue and bluish grey give the model a realistic construction-vehicle look.

Set number
42112
Year
2020
Pieces
1,161
Minifigures
0
Theme
Technic
Different parts
128
What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 128

As BrickLink list (XML)

Import on BrickLink: Wanted → Upload, upload the file (or paste its content), pick a Wanted List and add the parts.

Spare parts (10)

These extra parts come with the set in case one gets lost.

Description

A model built around one mechanism

Everything about this set points toward the mixing drum: steering, suspension and the cab are all built to support a large rotating drum at the back, which is the clear centrepiece of the model. Technic sets like this typically pair a motorised function with the app, letting the drum turn under power rather than only by hand, which adds a working element beyond just looking at a finished truck. At 1,161 pieces, most of the build time goes into the chassis and drive mechanism rather than surface detailing.

Only 128 parts, built for function

Compared with many sets of similar size, 128 unique parts is a relatively small number, typical for Technic models where the same beams, pins and gears repeat throughout the structure rather than relying on many different decorative elements. Black and dark bluish grey form the chassis and drum, with blue and light bluish grey picking out the cab and details, a practical rather than flashy colour scheme. The parts list on this page shows exactly which pieces and colours make up the model.

No minifigures, all mechanism

This set skips minifigures entirely, which is common for larger Technic vehicles where the engineering is the main draw rather than roleplay scenes. That makes the Cement Mixer a good match for builders who enjoy function-first models: steering that actually turns the wheels, a cab that tilts, and a drum that rotates are the kind of details this set is built around. It suits anyone assembling a fleet of working Technic vehicles rather than a story-driven scene.

Who should build this truck

The Cement Mixer suits builders who prefer mechanical function to minifigure play and who enjoy seeing how a model's moving parts actually work once assembled. At 1,161 pieces it is a substantial single-vehicle build, more involved than smaller Technic sets but still centred on one clear vehicle rather than a multi-part scene. It also fits naturally next to other Technic construction-vehicle sets for anyone building a themed fleet on a shelf.

FAQ

How many pieces does the Cement Mixer have?
The set has 1,161 pieces, built mainly from 128 unique parts in black, blue and bluish grey.
Does the Cement Mixer include minifigures?
No, this set has no minifigures — it is built entirely around the truck and its rotating mixer drum.
What is the main feature of this Technic model?
The turning mixer drum at the back is the centrepiece, supported by working steering and a tilting cab.

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