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LEGO Technic - Mercedes-Benz Arocs 3245 (42043) - LEGO - Toys"R"Us
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  • LEGO Technic - Mercedes-Benz Arocs 3245 (42043) - LEGO - Toys"R"Us
  • LEGO Technic - Mercedes-Benz Arocs 3245 (42043) - LEGO - Toys"R"Us

LEGO Technic - Mercedes-Benz Arocs 3245 (42043)


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  • Manufacturer's Age:  11 - 16 years
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    Climb aboard the awesome Mercedes-Benz Arocs 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 maneuverability, 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 color 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.

    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

    • Build and experience the powerful Mercedes-Benz Arocs 3245!
    • The tough LEGO® Technic Mercedes-Benz Arocs 3245 with motorized crane, claw, tipper body and outriggers is packed with authentic details.
    • 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
    • Includes 2753 assorted LEGO elements
    SKN Number:
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    Gift wrap is not available for this item.
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    Product Weight:
    10 lbs
    Product Dimensions: (in inches)
    22.8 x 18.8 x 4.8
    LEGO Technic - Mercedes-Benz Arocs 3245 (42043) is rated 4.8 out of 5 by 99.
    Rated 4 out of 5 by from Epic model - requires patience! This thing is huge, physically the biggest Technic model i've built and the most complex (currently half way through the 911 which i'm finding easier and more enjoyable!). It does get a little repetitive and arduous at times, its not a model for those who want a quick and exciting build but once you battle through the end result is satisfying! Some of the pipework routing in the manual is rubbish... you have to figure the odd bit out as its not clear in the instructions at one point, luckily its logical. One reason i bought it is its the modern version of kid 8868 which i had as a kid (and looks like a toy in comparison to this one!)
    Date published: 2017-01-10
    Rated 5 out of 5 by from Best new model of 2015 This has to be the best model of the 2015 cycle. The model is so realistic, and has so many great motorised features - dumping cargo hold, rotating grabber, full range of functions via the air pump. Although there are so many parts, the model was fairly easy to put together. The building manual was very easy to follow as always and bags numbered for ease of identifying. The one big thing over other years is the introduction of pre cut hoses which was a real bonus. no more worrying that you have to cut the pipe to the exact length or risk being short on another section! The only thing I have trouble/some difficulty with was the number of pipes that I had to feed through the centre of the grabber arm.
    Date published: 2015-08-01
    Rated 5 out of 5 by from King of the road From start to finish this model keeps you on your toes, no short cuts allowed or not reading the page properly as I found out the hard way, one small axle does a lot of work. Amazed how every thing was crammed into such a tight space whilst still giving all the functions of the real machine. The pneumatic system, extending boom excellent fun, the controls are very sensitive till you get used to them. The size of the model is excellent, you can get loads into the tipper and the suspension works a dream. Model B looks another excellent build. Excellent flag ship model for 2015.
    Date published: 2015-08-03
    Rated 5 out of 5 by from Great product, small glitch in the instructions This build is massive, highly detailed, and incredibly fun! The best parts... The crane build was very challenging, but only in terms of where to put the hoses as the base. The shocks used on the axles were a great addition, and the overall detail on the cab and grill ornament are equally wonderful. The display and play value with this set should make this a must for any Lego fan. The only "issue" I found was on page 256, where two connector pins show up out of nowhere. One is used during the step, two are just shown already there.
    Date published: 2015-08-02
    Rated 5 out of 5 by from 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.
    Date published: 2016-07-22
    Rated 5 out of 5 by from 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.
    Date published: 2016-05-14
    Rated 5 out of 5 by from A Awesome Set This set is AWESOME!!! I recommend this product a lot!! It is worth the money! This set has a lot of play-ability to it! It is a HUGE step up from the Lego Technic Unimog!! I REALLY recommend this set to any type of Lego fan because it is fun to build and play with!!! The new pneumatic system works great! I will never regret buying this set!!!
    Date published: 2016-01-06
    Rated 5 out of 5 by from One tough looking truck In my opinion, the Lego Arocs looks a whole lot better than the real thing. I love this truck. Even my Unimog was a little nervous at first, until it realized they were cousins. This took me about four days to build, starting in early afternoon until bed time to complete. Believe me, it was hard tearing myself away from the build just to go to work, but I managed. The truck is a good looking monster of a machine. It's pretty heavy for a Lego, even by Technic standards. The build was pretty challenging in some areas, but it all went together without a hitch. I find that I have no problems with the turntable binding or any other issue. The crane works well. It still has the sudden drop when not feathering the controls properly, but it's fun to master. The outriggers come out smoothly and the dump works flawlessly. As far as the build itself, I had visions of shortening some of the pneumatic lines once everything was completed, hoping it would create smoother lines and get rid of any binding turntable problems, but as I said, I have none of these issues. The pneumatic lines look pretty clean as they are, and I don't have any pinching issues which would have created slow or no movement of the appendages. My bucket closes quickly and sharply, and the crane does what's asked of it. I did spend a great deal of time running those lines to avoid future issues. Some of the lines could be shortened, but I didn't have the need. As far as instructions go, running the lines did, at one point, become slightly confusing. When running the lines to the control boxes, the pictures don't do an adequate job of showing where each small blue line goes. The cross section shows where on the manifold to insert them, but doesn't paint a clear picture of which line goes where. Common sense prevailed, however, because I assumed that after making the tree, the lines were inserted into the manifold they were closest to. Secondly, I still don't really know what #'s 100 and 101 are telling you to do. There's a circle around an obvious red pin, but there's a second circle around pretty much nothing. I assume it's basically telling you to do the same thing on the other side. Again, common sense, but it eluded me at first. All in all it was fantastically fun to build, and the end result is spectacular. There are several more pneumatic lines in comparison to the Unimog, and they look great. Like the Unimog, the steering is a bit heavy, but adds realism since it's easy to steer while rolling. The huge bed is really cool, and it's fun to watch it as it raises to dump. Like other reviewers, I found the cab to be highly detailed and impressive looking. It's a great set, and patience while building will be rewarded.
    Date published: 2016-01-10
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    Is this model rc controlled does it move backwards and forwards?

    Asked by: Lisa 16
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