LEGO® Technic 42131 App-Controlled Cat® D11 Bulldozer

Current best price

LEGO 42131 is currently available from $950.00 incl. shipping at Walmart.com. Only one retailer in our comparison stocks it.

Updated November 1, 2026 at 9:00 PM EST

LEGO 42131 price comparison: where is it cheapest?

Prices incl. shipping to the US ·

Brickfact may earn a commission when you buy through a merchant link. Commissions do not determine the order of offers. How Brickfact compares prices

iFurther information
The Lego set App-Controlled Cat® D11 Bulldozer with the set number 42131 is part of the LEGO Technic theme and is recommended for ages 18+. That makes it a set mainly for adults. It was released in October 2021. The model has 3,854 pieces, and we estimate it takes around 9 - 11 hours to build. 365 Brickfact users have this set in their collection.
The set weighs about 6.030 kg. The box measures 22.9 x 18.9 x 6.7 in (58.2 x 48 x 17 cm). The recommended retail price is $499.99.
Our Brickfact Lego price comparison compares the prices of 1 shop for this set. It is currently cheapest at Walmart.com for $950.00 including shipping. That is $0.25 per piece. Unfortunately, the set is currently not available below its recommended retail price.
The Part-Out-Value (POV) is the sum of the average prices paid on bricklink.com for all parts of this set. It is about $736.06.

Lego 42131 product data

Set Information

Set ID
42131
Theme
Pieces
3854
Building Time
9 - 11 hours
Age Range
18+

Availability

Release
10/2021
Retiring Status
Retired (12/2021)

Price Information

RRP
$499.99
Insiders Points (for purchase at Lego)
3250
Part Out Value
$736.06

Packaging

Weight
6.030 kg
Packaging dimensions
22.9 x 18.9 x 6.7 in
EAN (GTIN13)
5702016912937

Popularity with Brickfact users

users have this set
365
buyers in the last 12 months
26

365 Brickfact users have App-Controlled Cat® D11 Bulldozer in their collection. 26 users bought it in the last 12 months.

Based on anonymized Brickfact user collections; shown only for sets with at least 10 users. As of November 1, 2026.

LEGO 42131 price trend

Average sale price on secondary marketplaces – not the new price at retailers.

Current market value
$619.22
Growth vs. RRP
+23.8 % $499.99
Range
$534.11 – $624.21
Average
$602.50

Loading price history…

LEGO 42131 price history: how has the price changed?

Brickfact has been recording retailer prices since 10/12/2026. Best price so far: $950.00 (21 days ago).

Current best price
$950.00 +90% vs. RRP
Best price since 10/12/2026
$950.00 +90% vs. RRP · 21 days ago

Daily lowest prices at the tracked shops, including shipping. Gaps indicate days with no recorded price. The table lists each shop’s lowest price.

Lowest price per retailer (since 10/12/2026)

RetailerCurrentLowest priceDate
Walmart.com LogoWalmart.com$950.00$950.0011/02/26

Lowest price per day that Brickfact recorded at the retailers in the price comparison, including shipping where known – as in the comparison above. Amazon offers are not included in the price history.

Official Set Description for LEGO 42131 App-Controlled Cat® D11 Bulldozer

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 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.

Take control of your bulldozer model
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.

Explore engineering
LEGO Technic buildable models feature realistic movement and mechanisms that let LEGO builders explore engineering concepts in an approachable and realistic way.

  • Build a mighty construction vehicle packed with details with this huge LEGO® Technic™ App-Controlled Cat® D11 Bulldozer 42131 model building set for adults.
  • Enjoy a rewarding build, then explore the model’s many features and functions. See the new-for-October-2021 LEGO® track element that gives the bulldozer its realistic movement.
  • Use the CONTROL+ app to operate your bulldozer. 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.
  • 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.
  • This Cat® replica measures over 10 in. (26 cm) high, 22 in. (57 cm) long and 14.5 in. (37 cm) wide.
  • Requires 6 x AA batteries (not included). The set also includes 2 x no. 15 motors, 2 x large motors and 1 x hub.
  • This Cat® model is meticulously detailed to replicate the full-sized model with authentic colors and graphics that Cat® enthusiasts will love.
  • The LEGO® Technic™ universe offers advanced buildable models for LEGO fans who are looking for an immersive building challenge.
  • LEGO® Technic™ components meet rigorous industry standards to ensure they are consistent, compatible and connect reliably every time – it’s been that way since 1958.
  • LEGO® Technic™ components are dropped, heated, crushed, twisted and analyzed to make sure they meet strict global safety standards.

Building Instruction for LEGO 42131 App-Controlled Cat® D11 Bulldozer

LEGO 42131 Frequently Asked Questions

How much does LEGO 42131 App-Controlled Cat® D11 Bulldozer cost?
The lowest price in the Brickfact price comparison is currently $950.00 incl. shipping at Walmart.com. The RRP is $499.99.
Where can I buy LEGO 42131 cheapest?
Only one retailer in the Brickfact price comparison currently stocks LEGO 42131: Walmart.com ($950.00).
Is LEGO 42131 still available?
LEGO has retired 42131 App-Controlled Cat® D11 Bulldozer. New copies are still available at 1 retailers in our price comparison while stocks last.
When was LEGO 42131 cheapest?
Since tracking began on 10/12/2026, the lowest shop price recorded by Brickfact for LEGO 42131 was $950.00 on 10/12/2026 at Walmart.com, including shipping. Amazon prices are not included.
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