Name: LEGO Technic App-Controlled Cat D11 Bulldozer 42131 Toy Building Kit (3,854 Pieces)
Brand: LEGO
SKU: 6000203211644
Price: 1699.97 CAD
Availability: InStock
Rating: 4.5 (63 reviews)

Walmart US Ecommerce Website

GENERAL MERCHANDISE

PHARMACY

GROCERIES

VUDU

SPARK

PHOTO

ADVERTISING

SAVINGS CATCHER

GIFTCARDS

INHOME

AFFILIATE

ONEAPP

LOTUS

HELP

SMART_REORDER

GROCERY

CONV_COMMERCE

Try it free

Glass WEB: BTS x Walmart + "Non Member" PIP Banner Wk 26 2026

Buy Box Ad Container Module for Desktop

Custom HTML Module - About Klarna

Custom HTML Module - About SalesFinancing - Second update

You'll choose a plan at checkout.

#515357

I want delivery savings with Delivery Pass

#0071dc

NEW Fulfillment Tue Apr 15 2025 2:17 PM EDT

MTZ Team | Marquee 1 Ad | Item Page

MTZ Team | Marquee 2  Ad | Item Page

MTZ Team | Skyline Ad | Item Page

Other products of interest

MTZ Team | Sponsored Product Carousel - Item Page

More items to explore

MTZ Team | Sponsored Product Carousel - Item Page Broad 

NEW AddonServicesRedesign Fri Jul 18 2025 1:30 PM EDT

NEW AddToCart Mon Jul 14 2025 3:50 PM EDT

NEW AddToCart Tue Apr 15 2025 2:19 PM EDT

NEW BrandBoxDisplayAd Mon Jul 14 2025 9:14 PM EDT

NEW BrandLink Wed Apr 23 2025 12:07 AM EDT

NEW Breadcrumb Mon Apr 07 2025 8:23 PM EDT

Walmart Rewards Mastercard

NEW FinancingOptions Tue Dec 10 2024 3:32 PM EST

I want shipping & delivery savings with

NEW Fulfillment Mon Jul 14 2025 4:00 PM EDT

NEW InternationalShipping Mon May 18 2026 1:02 PM EDT

New Item Page - Nutrition Value Placeholder Module, Wednesday, February 08, 2023, 5:11:53:90 pm

New Item Page - Product Description Placeholder Module, Wednesday, February 08, 2023, 5:14:04:38 pm

New Item Page - Product Ingredients Placeholder Module, Friday, February 10, 2023, 10:34:23:79 am

New Item Page - Product Specifications Placeholder Module, Wednesday, February 08, 2023, 5:15:29:61 pm

New Item Page - Reviews Placeholder Module, Wednesday, March 22, 2023, 10:04:29:34 am

New Item Related Shelves Module, Thursday, June 15, 2023, 6:08:51:10 am

 Price Match Policy

Prices, terms, and availability may vary online, in stores, and in–app. If the advertised price is not shown here, inventory at the advertised price may now be sold out. Please see the other offers, if available, while quantities last. Some items may be available from Marketplace Sellers, who set their own prices, and are not eligible for price match. Items sold in store by Walmart may be eligible for a price match to online items shipped and sold by Walmart. For variable weight items, price shown is an estimated price only – you will be charged for the actual weight of the item. See our

NEW LegalPriceDisclaimer Mon Jul 14 2025 4:11 PM EDT

NEW LegalPriceDisclaimer Wed Apr 30 2025 12:13 AM EDT

NEW ListsAndRegistries Tue Apr 15 2025 4:50 PM EDT

NEW PaymentPlans Mon Jul 14 2025 4:15 PM EDT

NEW PaymentPlans Tue Apr 15 2025 1:31 PM EDT

NEW PriceInformation Tue Apr 15 2025 1:30 PM EDT

NEW ProductDescriptionPlaceholderATF Tue Jul 08 2025 11:41 PM EDT

NEW ProductFlags Thu Apr 10 2025 11:42 PM EDT

NEW ProductHighlightsPlaceholder Wed Jul 02 2025 12:43 AM EDT

NEW ProductImages Tue Apr 15 2025 2:13 PM EDT

NEW ProductName Tue Apr 15 2025 12:53 PM EDT

NEW ProductReturnPolicyDetails Tue Dec 10 2024 3:17 PM EST

NEW ProductReturnPolicy Mon Jul 14 2025 5:04 PM EDT

Return Policy

NEW ProductReturnPolicy Tue Apr 15 2025 2:28 PM EDT

NEW ProductStickyBuyBox Wed Jul 02 2025 12:55 AM EDT

NEW PromoDiscount Tue Apr 15 2025 6:53 PM EDT

New SellersSecondaryBuyBox Module, Tuesday, September 05, 2023, 4:02:21:76 pm

Shop Confidently

NEW ShopWithConfidence Thu Jan 15 2026 2:20 PM EST

NEW SocialProofMessage Tue Apr 15 2025 7:17 PM EDT

NEW SoldAndShippedBy Mon Jul 14 2025 5:04 PM EDT

NEW SoldAndShippedBy Tue Apr 15 2025 2:23 PM EDT

New!

More savings, less stress.

HSK_Subscribetosave_E_v2

NEW SubscriptionOptionsModule Tue Apr 15 2025 6:44 PM EDT

NEW SubscriptionPriceMessage Wed Apr 23 2025 6:48 PM EDT

NEW Variants Wed Apr 23 2025 11:01 PM EDT

[Sticky] BuyBoxAd Mon Aug 11 2025 3:59 AM EDT

[Sticky] PriceInformation Mon Jul 14 2025 4:03 PM EDT

Syndigo

True

dWeb: L1/L2- Comparison Chart- WK 07, 2026

#000000

Item Carousel - Rich Relevance 1

RR carousel

Item Carousel - Rich Relevance 2

RR carousel 2

Item Carousel - Rich Relevance 3

LEGO Technic App-Controlled Cat D11 Bulldozer 42131 Toy Building Kit (3,854 Pieces)

<ul><li><strong>App-Controlled Operation</strong>: Use the CONTROL+ app to drive, steer, raise, lower, and tilt the blade, or raise and lower the ripper and ladder.</li><li><strong>Large Scale Replica</strong>: Measures over 10 in. (26 cm) high, 22 in. (57 cm) long, and 14.5 in. (37 cm) wide.</li><li><strong>Realistic Movement</strong>: Features a new-for-October-2021 LEGO track element for realistic movement.</li><li><strong>Motorized Functions</strong>: Includes 2 x no. 15 motors, 2 x large motors, and 1 x hub.</li><li><strong>Extensive Piece Count</strong>: A 3,854-piece building kit.</li></ul>

<ul><li>Build a mighty construction vehicle packed with details with this huge LEGO® Technic™ App-Controlled Cat® D11&nbsp;Bulldozer 42131 model building set for adults</li><li>Enjoy a rewarding build, then explore the model’s many features and functions.</li><li>See the new-for-October-2021 LEGO® track element that gives the bulldozer its realistic movement</li><li>Use the CONTROL+ app to operate your bulldozer.</li><li>Bring the bulldozer model to life as you drive and steer, then raise, lower and tilt the blade or raise and lower the ripper and ladder. &nbsp;</li><li>Looking for the best gifts for yourself or any fan of Cat® bulldozers and other cool vehicles? This impressive construction vehicle set makes a top gift idea</li><li>This Cat® replica measures over 10 in. (26 cm) high, 22 in. (57 cm) long and 14.5 in. (37 cm) wide</li><li>Requires 6 x AA batteries (not included).</li><li>The set also includes 2 x no. 15 motors, 2 x large motors and 1 x hub</li></ul>

Brand

Theme

Piece Count

Minimum Recommended Age

Educational Focus

Color Category

Is Collectible

Size Descriptor

Model

Retail Packaging

Has Written Warranty

Celebrate a hero of the construction world as you build a replica version of the biggest Cat dozer with this LEGO Technic App-Controlled Cat D11&nbsp;Bulldozer (42131) kit. This large set lets adults enjoy quality ‘me time’ focusing on their passion. Just like the real Cat bulldozer, this model is built in modular sections. LEGO fans will love the new-for-October-2021 LEGO element – a large track that can be tightened and loosened. And the build is just the start! With many authentic features and functions packed into this model, there’s lots to discover.<br><br>Take control of your bulldozer model<br>Use the CONTROL+ app to operate and explore this heavy-duty machine. Use the app to drive and steer. The app delivers realistic movement as you raise, lower and tilt the blade or raise and lower the ripper and ladder.<br><br>Explore engineering<br>LEGO Technic buildable models feature realistic movement and mechanisms that let LEGO builders explore engineering concepts in an approachable and realistic way.

Age Range

Maximum Recommended Age

Character

Product Line

Material

Colour

Universal Product Code (UPC check)

fulfillment

title_shipToHome_date_delivery

<!DOCTYPE html>
<html>
   <head>
      <meta name="viewport" content="width=device-width, initial-scale=1">
      <link
         rel="stylesheet"
         href="https://unpkg.com/tachyons@4.12.0/css/tachyons.min.css"
         />
   </head>
   <body>
      <div class="flex flex-column justify-center w-100 ph3 normal lh-copy pt1">
            <div class="tc">
               <img src="https://i5.walmartimages.com/dfw/8822aef6-7abe/k2-_f4ee767f-a90a-4f70-be39-71e5d7b238a0.v1.jpg">
               <h3>4 equal payments</h3>
               <h4 class="gray">Buy what you love and split the cost. It's that easy. </h4>
            </div>
            <ul>
            <b>
               <li>Add item(s) to your cart.</li>
               <li>
                  Add items to checkout and choose 
                  <image height="14" width="auto" src="https://i5.walmartimages.com/dfw/8822aef6-7abe/k2-_f4ee767f-a90a-4f70-be39-71e5d7b238a0.v1.jpg"></image>
               </li>
               <li>Enter your debit or credit card information. </li>
               <li>Your first payment is taken when the order is processed, and the remaining 3 are automatically taken every two weeks.</li>
            </b>
            </ul>
            <p class="gray">Please note that a higher initial payment may be required for some purchases. Pay later in 4 <a href="https://cdn.klarna.com/1.0/shared/content/legal/terms/0/en_ca/paylaterin4" target="_blank">terms</a> available here. For Quebec residents, these Pay Later 4 <a href="https://cdn.klarna.com/1.0/shared/content/legal/terms/0/en_ca/paylaterin4_quebec" target="_blank">terms</a> are applicable. </p>
      </div>
   </body>
</html>

<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <link
      rel="stylesheet"
      href="https://unpkg.com/tachyons@4.12.0/css/tachyons.min.css"
    />
    <style>
      body,
      html {
        font-family: 'Everyday Sans', Arial, sans-serif;
      }

      li {
        margin-bottom: 0.5rem;
      }
    </style>
    <title>Walmart Installment Plan</title>
  </head>

  <body>
    <div class="col-container w-100 normal lh-copy pt1">
      <div class="col tc">
        <img
          width="35%"
          src="https://i5.walmartimages.com/dfw/8822aef6-971e/k2-_ed78b905-6394-4f88-a805-ab299123f2cc.v1.png"
          alt="Walmart Installment Plan"
        />

        <h3>Shop today, take time to pay</h3>
        <p>
          Split your purchase into 6 equal installments*  /
          <a
            href="https://i5.walmartimages.ca/dfw/8822aef6-d3f1/k2-_417f32f7-5074-45a6-b23d-5d5b3039e5b8.v1.pdf"
            target="_blank"
            rel="noopener noreferrer"
          >
            Terms and Conditions apply
          </a>
        </p>

        <h4>Here's how it works</h4>
        <ul class="tl">
          <li>Spend $199.99 or more on walmart.ca**</li>
          <li>Select Installment Plan at checkout</li>
          <li>
            Pay with your Walmart Rewards Mastercard. If you don't have one,
            click "Apply Now".
          </li>
        </ul>

        <h4>Details</h4>
        <p>
          Your qualifying purchase will be split into 6 equal monthly
          installments charged to your Walmart Rewards Mastercard. If your items
          ship on separate dates, each shipment will be converted to a separate
          Installment Plan.
        </p>

        <h4>Don't have a Walmart Rewards Mastercard?</h4>
        <p>
          Apply now and upon approval use your new account to enjoy the
          convenience of an Installment Plan on eligible purchases*. Purchased
          items must appear on a single receipt totaling $199.99 or more (before
          taxes, discounts, Walmart Reward Dollar™ redemptions, and
          shipping/delivery fees)∆
        </p>

        <p>
          *See
          <a
            href="https://www.walmart.ca/cp/shop/installment-plan/6000204340202?icid=Glass_PIP_FinancingOptions_WRMC_LearnHow_TermsConditions2_WM"
            target="_blank"
            rel="noopener noreferrer"
          >
            Terms and Conditions
          </a>
          for full details
        </p>

        <p>
          ** Eligible Installment Plan purchases are excluded from earning
          Walmart Reward Dollars™. Walmart Gift Cards and Walmart Reward
          Dollars™ cannot currently be used on Installment Plan transactions.
         
        </p>

        <p>
          ∆ All new credit card applications are subject to approval by
          Fairstone Bank of Canada.
        </p>

        <div class="pt3">
          <a
            href="https://www.walmart.ca/en/cp/installment-plan/6000204340202?icid=Glass_PIP_FinancingOptions_WRMC_LearnHow_ApplyNow_WM"
            target="_blank"
            rel="noopener noreferrer"
          >
            <button
              class="pv2 ph3 sans-serif bg-blue white bn no-underline br-pill f6 pointer b"
              type="button"
            >
              Apply now
            </button>
          </a>
        </div>
      </div>
    </div>
  </body>
</html>

Building Experience

Enjoyment

Value For Money

Assembly Instructions

[This review was collected as part of a promotion.] Everything

walmart.com

Jane

Absolutely the best set we have ever built. It took me and my 18 year old Grandson a couple of weeks to build this, it is not for the faint of heart. The detail and precision are superb. My grandson is training to be a heavy duty mechanic, so this was right up his ally! He now wants to take it to his class to show them the module nature of a CAT build. Well done LEGO, your best yet!

Outstanding

LEGO

I work at a coal mine primarily as a machinist, but I also operate equipment from time to time. Our mine has two D11T's. This set is extremely accurate to the real thing. Understandably so, there are some discrepancies, but for a buildable kit it could not be any closer. The working ladder is just like the real thing. Our mine also has a Liebherr excavator, we have the set, and it is amazingly accurate also. As far as the value of this set, it is also spot on, almost 4000 pieces, with a blue tooth hub is pretty good for the price. The gentleman who designed this set is also a genius, to be able to have all these workings without the use of hydraulics, is amazing. LEGO has done it again. Keep up the great work, this set is truly a masterpiece!!

Spot on

If you love large toys, I highly recommend this build. It's a Great build project, not only because of the high piece count, but because it's so involved. Great job, and kudos to the engineers on the design. It is so realistic. I also love that you can control this unit from an app. Many hours of family fun in your future. I do however have a small gripe. 1) How can Lego put out an item like this and not include a construction guy with a helmet...... Lol, and  2) why doesn't this unit also include one of those small tools to dismantle the unit . Thanks for the fun times, Lego.

Love large toys, this is a must have.

Okay, this is amazing. The LEGO Cat D11 is a must have for fans of heavy equipment and RC technology, and of course LEGO.

Building this large 18+ Technic set came with many quirks that only Technic has! Gears, pins,hydraulics, etc. It was a breeze to put together. I've had experience building large Technic sets like this and am season to know what to expect. If you're just getting into Technic go for something smaller first. Tryst me.

The RC capability is choice! This thing has some speed and torque! Realistic functions to the actual bull dozer! Lift up the blade, lower the ripper, and lower the ladder! Fantastic!

This set looks great when displayed to the Liebherr R9800 and Volvo 6x6. 

It's a niche category for fans of the LEGO community. If you see it get it! 

-WZ

WOW!!

I'd previously built the Technic Lamborghini, and while I enjoyed it, wasn't especially looking forward to my next Technic build.  However, I kept seeing the Bulldozer and after watching some videos demonstrating its functionality, I decided to spring for it.  I took my time (~ 25-30 hours) spread out over two weeks, being sure all the pieces were correctly in place.  The moment of truth was last night, when I finished the build and fired up the app to really test things out.  The result?  Wow...I am now an absolute Technic fan, and - as I write this - the postman is just delivering the Bugatti!  Can't wait to get started on that, and of course looking forward to the Ferrari.

LEGO Technic...I believe!

Fantastic build & play !  I have four Volvo Haulers (different colors), a Liebherr excavator, the Rough Terrain Crane, the 4x4 Tow Truck and now this huge dozer!  Each built exactly right the first time and those sets using the Control App worked perfectly at the start! Love my pseudo construction company, kudos Lego !  The key is to take a bit more time when building Technics that are App Controlled, accuracy is essential to reduce frustration and failure time !

New Item in the fleet

I'm currently halfway through the build and have enjoyed it so much I'm actually buying the Liebherr to go with it! I've always been a little put off by Technic because it's so precise and unforgiving but I have really enjoyed this build. Beautiful! So much attention to detail and it looks good if you're up close or far away. I honestly can't wait to finish this build so I can drive it around and play with it! I got it as a gift but would have bought it for myself in a heartbeat had I known how much fun this is to put together. Strongly recommend!

WOW!

This is an incredibly advanced Lego set. It is not for extremely young children. It's a lot of fun to build and the playability is off the charts. This bulldozer is huge. My only  gripe is the price. I'd like to see a much larger technic set in terms of piece count. Somewhere between 6000 to 9000 pieces

D11 bulldozer

This was excellent fun to build; the instructions were spot on. I liked the way that part-through you could test the drive system and fix any problems before building anymore, an excellent feature. My only fault was with the app, which continues to demand an update every time it's opened.

Great build

Thought it would be good with my volvo dump truck but it ended up being nothing but problems
I am 15 hours in and still on stage 2 had to start over completely after stage 3 due to a gearbox problem
Rebuilt it and now the motors on the gearbox have no power when plugged in and connected 
They worked 20 minutes ago I don't know what happened

Biggest mistake of my life

LEGO Technic App-Controlled Cat D11 Bulldozer 42131 Toy Building Kit with 3,854 pieces, featuring a detailed replica of the Cat D11 bulldozer in yellow and black. The model includes modular sections, realistic tracks, and functional components like a movable blade, ripper, and ladder. The CONTROL+ app allows users to drive, steer, and operate the bulldozer's features. The set measures over 10 inches high, 22 inches long, and 14.5 inches wide. Displayed with its packaging in the background.

LEGO Technic App-Controlled Cat D11 Bulldozer 42131 Toy Building Kit (3,854 Pieces)

About this item

Smart summary

Specifications at a glance

Shop Confidently

Financing options

Your data, your choice