LEGO Technic - Mercedes-Benz Arocs 3245 - 42043

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Product Information

Colour Multi
Height 48 cm
Width 124 cm
Depth 58.2 cm
Number of Pieces 2793
Range LEGO Technic
Minimum Age 11 years
Model Number 42043
Product Type Building Blocks
Type Building Blocks
Weight 4.49 kg
Brand LEGO

Why we love this

Build and experience the powerful Mercedes-Benz Arcos 3245! The tough LEGO Technic Mercedes-Benz Arcos 3245 with motorized crane, claw, tipper body and outriggers is packed with authentic details

Climb aboard the awesome Mercedes-Benz Arcos 3245! This huge, robust, 2-in-1 LEGO Technic model is packed with authentic details and features. Turn on the included Power Functions large motor and engage the advanced pneumatic system (new for fall 2015) for complete control over an array of exciting motorized functions.

You can operate the ultra-versatile crane arm mechanism, open and close the grabber, extend the outriggers or raise and lower the tipper body! Twin axle steering, double differential drive and fully independent suspension provide ultimate manoeuvrability, and the driver's cab tilts to reveal a detailed 6-cylinder engine with moving pistons.

Open the cab doors to access the detailed interior with dashboard, blue seating and steering wheel with Mercedes-Benz logo. This meticulously detailed 2015 model also features an extendable crane arm, 4 suspended axles, double wheels on the 2 rear axles, opening tailgate, warning beacons, wing mirrors and comprises 2753 elements, making it the largest LEGO Technic model ever produced.

An authentic white, gray and black colour scheme and iconic 3-pointed Mercedes-Benz star add the finishing touches to this impressive model.

When you feel like another building challenge, rebuild it into the rugged Mercedes-Benz Articulated Construction Truck.

Product Features:

• Features a LEGO Power Functions large motor and an advanced pneumatic system for an array of motorized features, including extendable outriggers, automated crane arm and grabber, and a working tipper body

• Also features 2 suspended front axles with twin axle steering, 2 suspended rear axles with double wheels and 2 differentials, fully independent suspension, 6-cylinder engine with moving pistons, detailed cab, opening doors and tailgate, and a 3-pointed Mercedes-Benz star

• 2-in-1 model: rebuilds into a Mercedes-Benz Articulated Construction Truck

• Crane arm reaches up to 57cm into the air

• Mercedes-Benz Arcos 3245 (with retracted crane arm and outriggers) measures over 12" (31cm) high, 21" (54cm) long and 5" (14cm) wide

• Merc edes-Benz Articulated Construction Truck (with crane boom extended) measures over 20" (53cm) high, 30" (77cm) long and 5" (14cm) wide, and 12" (31cm) high with crane boom retracted

Number of Pieces: 2793
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Our customers say

Rated 4.9 out of 5 by 47 reviewers.
Rated 5 out of 5 by An amazing set for anyone, beginner or collector What else can I say apart from what has already been said? This is an amazing set, and as an Electrical Engineer whose Lego bug has just been rekindled, this was the ideal stepping stone for my transition to an AFOL (Adult Fan of Lego). It has superb details, amazing functions through an ingenious gear box, and absolutely HUGE play value. The sheer number of parts alone make this worth buying, let alone the sheer amount of customisations that can be applied to it. The set is quite big, bigger than what I was expecting. To give you an idea, you can see how big it is, next to the HULK. It even dwarfs the Star Wars UCS Tie Fighter (also shown in images). In terms of building, it took me longer than most as I would always start just before bedtime, which wasn't ideal as I nodded off a fair few times, which is not recommended as Technic pins and beams aren't the most comfortable pillows. I had to double back on my build at a few points as I wasn't paying attention, so it does need a bit of caution when building. It was just the right amount of challenge without it being too intricate or straightforward. To summarise, this is a fantastic set with limitless play value. It is highly recommended for anyone and will make a splendid addition to anyone's collection. 22 July 2016
Rated 5 out of 5 by excellent fun bought this for my husbands birthday, he loved it, got it built in a weekend. loves all the moving parts. we have it on display at the moment, but I am sure he is going to want to build it again, ordering online was easy & notified via text when it was ready to collect in store. easy shopping. 18 July 2016
Rated 5 out of 5 by Mercedes-Benz Arocs 3245 When I bought this set, I was nervous of the very high price. However, I must admit that this set definitely worth every single dollar that I paid. The Mercedes-Benz Arocs 3245 is absolutely the best Lego set that I've managed to put my hands on. This set is huge and educational: it has penumatics,power functions, a gearbox, a mind - blowing steering system (which is totally unaffected by the suspension system) and a great design, featuring the masterfully sculptured front grille. There are so many small details which make this set unique, such as the small Mercedes Benz logo sticker on the steering wheel, the round shield with the Mercedes Benz logo printed on it and the beacons used for controlling the steering system. The instructions are clear, although that building the crane was quite challenging. (because of the penumatic tubing). Moreover, the set has many useful pieces and is a good base for MOCs. It' s actually very fun to move the truck around and drop some pieces in the container using the crane. This set has some cons, but very minor ones. I think that this set is the best Lego set that was ever created and that the designer made a great job in creating the set and copying the real Mercedes Benz Arocs. 05 July 2016
Rated 5 out of 5 by Excelllent Set! This set provided a fun and challenging build. One of the best Technic sets available in my opinion. It is chalked full of unique parts as well which makes it a great set to have for future builds. 21 June 2016
Rated 5 out of 5 by Keep them coming I've always loved building something functional and this product more than lives up to my expectations. I'd love to have the MK II Crane brought back (and feel free to upgrade it with the latest pneumatics). 09 June 2016
Rated 5 out of 5 by Best technics model so far I am an adult lego technic fan. i love building technic models much more than playing with them. the challenge is to motorize them and modify them. Arocs is the best construction model as the alternate model is equally challenging to build as the original model and not just a modification, with the exception of the drivers cabin. again the playability of the alternate model is more than the original ,just like the MK2 crane. it is challenging to build but easy to mechanize with the power functions so that it can move forwards/backwards and turn with a remote. the tubes etc of the pnuematics are a great improvement on the unimog where the ends of teh tubes became brittlle and tore after two builds. the only improvement for future that the designers can do is to modify the pnuematics so that the crane arms does not come down with a jerk but slowly drops ! 01 June 2016
Rated 5 out of 5 by Mercedes-Benz Arocs 3245 - Everything is Awesome! I got back into buying and building LEGO a couple of years ago when I bought a second hand 8258 Crane Truck from my son's friend. Since then I've focused on buying the larger Technic and Star Wars sets (yes - I do have the 10179 Falcon :-D ). The set is just about perfect. A challenging and rewarding build - take your time and just enjoy the ingenuity of the design. Once built, even I as a 50-year old can appreciate the play value :-) !! I get the feeling this set is aimed at AFOLs, but anyone who has an interest in all things engineering is gonna love it. Worth every penny! 17 May 2016
Rated 5 out of 5 by Arocs 3245 This is the first new LEGO I have built in over 25 years, and marks my return to one of the greatest pleasures of my earlier years. And what a return! This is without a doubt the most impressive Technic model I have ever seen or built, and I would recommend it to anyone without any hesitation whatsoever. This model has it all: power functions, pneumatics, and it also looks the part too; this is a really nice vehicle which really looks close to, if not better in some respects than the real thing. Pros: - Power functions driving an impressive gear train to select four different functions: tipping the truck bed, extending the stabilisers, rotating the grab arm and driving the compressor - Impressive pneumatic functions: two pistons control the angle of the grab arm, one extends the arm and a final small one opens and closes the grab itself - Straight six cylinder engine driving (or driven by!) by the eight rear wheels, which have suspension and a separate differential for each axle - Incredibly detailed cab with Mercedes-Benz livery, which tilts to expose the engine just like on a real truck - Front steering via a hand-of-god knobs is well done, with independent suspension for each wheel - Locking back door on truck bed, which opens during tilting - Cab and platform on the side of the cab are sized appropriately for Technic figures from earlier models, so they can drive the truck and operate the controls (see the photos!) - Clutch gear on the grab arm turn/stabiliser extending functions prevents damage when these reach their limits and come to a hard stop - The pneumatic lines are routed through colour-coded T elements which makes some of the instructions easier to follow - The diagrams in the instruction booklet were easy to follow, and perhaps broken up into too many steps compared with the earlier instructions I was used to, but were easy to follow; I only made a few mistakes due to my own fault and these were thankfully easy to rectify without dismantling too much! All the controls for the functions operate well, with a few caveats I'll mention below. (Very minor) cons: - Due to the weight of the grab arm, the arm can drop abruptly when lowering the arm; this can be prevented by being very careful with the valve operation, so that the air doesn't escape very quickly. This isn't a design flaw in the model as such, it's a limitation of how the pneumatic valves operate. The weight can also mean it takes a good bit of time to raise the arm since it takes the compressor a while to build up enough pressure in the system. - The amount of pneumatic lines running through the centre of the turntable (8) makes the turning action ever so slightly stiff and this can lead to jerky turning motion due to the clutch slipping. This got better on my second build of the model due to dust making the lines stick to each other less--when brand new out of the box there was a good bit of friction between them. Fiddling with the precise amount of slack and routing of the lines helped a little bit, but didn't eliminate this entirely. - The compressor and tilting mechanism could have used a clutch gear; when I dismantled it to build the alternative model, the axle driving the compressor had noticeable wear I think due to the load put on it when the pressure is high and all the pistons are at their limits, and the linear actuator ground horribly at the limits of the bed tilt if not quick enough to stop the motor - The stickers aren't compatible with the alternative build; it uses a reversed arrangement of two of the pneumatic valves, and some of the valve control stickers are out of place on the alternate model due to where you need to place the pieces. The valve arrangement could have easily been made the same--it's just a matter of switching the routing of the lines, I think. - The instructions showing the routing of the pneumatic lines could have been clearer. I was not much in doubt of which line went to which nozzle of which valve, but the spatial arrangement of how the lines were routed around each other was not as clear as it perhaps could have been. Note that these are very minor criticisms, and I have absolutely no regrets about purchasing this model. It was an absolute blast to build, with very different parts to it to make it not get too repetitive -- the main chassis and engine, the gear train, the pneumatic arm, the cab, and the bed. Seeing it come together bit by bit was great! And I've spent hours playing with it after building it. The slow, majestic sweep of the truck bed tilting up and down, the rapid open and close of the grab, and the graceful raising of the grab arm are all just a wonder to behold. The amount of functionality crammed into the model is incredible, and the result is a technical wonder you'll marvel at for hours. 14 May 2016
  • 2016-10-27 T11:48:10.980-05:00
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LEGO® Technic Mercedes-Benz Arocs 3245


  • Climb aboard the awesome Mercedes-Benz Arocs 3245! This huge, robust, 2-in-1 LEGO Technic model is packed with authentic details and features.
  • You can extend the outriggers or raise and lower the tipper body!

  • The driver's cab tilts to reveal a detailed 6-cylinder engine with moving pistons.

  • You can operate the ultra-versatile crane arm mechanism, and open and close the grabber.

  • This meticulously detailed 2015 model comprises 2793 elements, making it the largest LEGO Technic model ever produced.

  • 2-in-1 model: rebuilds into a Mercedes-Benz Articulated Construction Truck.

Product Videos

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