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Set 42043 Mercedes-Benz Arocs 3245
Technic

LEGO® Mercedes-Benz Arocs 3245

The Arocs 3245 is a Technic crane truck that combines scale with genuine mechanical function. At 2,793 pieces it counts among the larger Technic sets of its generation and is aimed squarely at builders who enjoy engineering over play scenes. This page lists every fact plus the full parts list.

Set number
42043
Year
2015
Pieces
2,793
Minifigures
0
Theme
Technic
Different parts
239
What can I build with it?

View the official building instructions at LEGO® ↗

Parts list 239

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 (15)

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

Description

A truck built around real functions

Technic sets at this scale are designed to recreate mechanical behaviour rather than just an outward shape. The Arocs 3245 typically features a rotating crane arm, working steering, and a tipping cargo bed. With 2,793 pieces, there's enough substance to build that mechanism in a way that stays sturdy and detailed rather than fragile. The crane arm's multiple extending sections in particular show how much engineering can sit inside a seemingly ordinary commercial vehicle once every movement is worked out mechanically, with no electronics involved.

Engineering parts instead of System bricks

Unlike a classic System set, a Technic model is built mostly from axles, pins, gears and liftarms. The Arocs uses 239 distinct part types, pointing to a solid but not overloaded mechanical parts kit. Anyone curious how power transfer and steering actually work inside a model will find those principles laid bare here, for instance when turning the steering wheel visibly transfers motion to the front axle and the whole vehicle noticeably turns. Builds like this work well for showing both children and adults how gears and linkages behave in miniature, before spotting the same ideas in real machinery.

A restrained, realistic colour scheme

Black, light and dark grey, plus blue, dominate the colour scheme and echo the look of real construction-site vehicles. That reduced palette makes the finished model read as working machinery rather than a bright toy. For collectors focused on realistic commercial vehicles, that's a clear plus on the shelf, since the truck sits comfortably alongside other Technic vehicles while still standing out through its sheer size. The cab interior and tyres follow the same restrained approach, keeping the overall look coherent rather than needlessly bright.

Who this model suits

The Arocs 3245 suits anyone who enjoys mechanical engineering and has patience for a longer build. With no minifigures included, the vehicle itself is the focus rather than play scenes. The parts list on this page makes it easy to search for individual Technic elements, whether for your own modifications or to complete other models, particularly if you're after gears, axles or grey body panels for your own vehicle projects.

FAQ

How many pieces does the Mercedes-Benz Arocs 3245 have?
The set contains 2,793 pieces across 239 distinct part types.
Does it include any minifigures?
No, this Technic set has no minifigures; the focus is on the vehicle and its mechanics.
What colours define the model?
Black, light and dark grey, and blue dominate, matching the look of a real construction-site truck.

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