Cat D11 Bulldozer

Cat D11 Bulldozer (42131-1) is a set in the Technic theme, released in 2021. It has 3,854 pieces.

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Number:42131-1
Released:October 2021
Pieces:3,854
Box size:58.2 × 48 × 17 cm
Theme:Technic

Box size and weight as measured by Brickset.

In numbers

Over the last 30 days the lowest shop price recorded for this set was 834.69 USD, taken from 30 days with a price on record.

Since 10/5/2026 the lowest shop price has risen from 840.24 USD to 1,065.52 USD, by 27 % (based on 30 days with a price on record).

LEGO planned to retire this set in December 2021.

Product details

Number: 42131-1
Name: Cat D11 Bulldozer
Theme: Technic
Released: October 2021
Launched: October 2021
Retired: December 2021
Pieces: 3,854
RRP: ≈ 441.41 USD (619.99 CAD) (Canada)≈ 561.69 USD (499.99 EUR) (Germany)≈ 617.89 USD (2,399.99 PLN) (PL)≈ 576.26 USD (429.99 GBP) (United Kingdom)499.99 USD (United States)
Price per piece: ≈ 0.115 USD (0.161 CAD) (Canada)≈ 0.146 USD (0.130 EUR) (Germany)≈ 0.160 USD (0.623 PLN) (PL)≈ 0.150 USD (0.112 GBP) (United Kingdom)0.130 USD (United States)
Best price (30 days): 834.69 USD
Price per piece (best offer): 0.276 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

BrickLink market data

We hold no current BrickLink prices for this set right now. BrickLink's own price guide is one click away.

View the price guide on BrickLink

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Pricing

Best price ever≈ 834.69 USD (749.95 EUR) Advertising Sealed · gross · idee+spiel · seen 10/29/2026 Not compared yet, no exchange rate: 20 in other currencies

Current best offer≈ 1,065.52 USD (950.00 EUR) Advertising Sealed · gross · idee+spiel · seen 11/3/2026

Price history

Lowest shop price now1,065.52 USD
Lowest ever 834.69 USD

Each day's lowest price among the shops' current offers, including VAT. A price in another currency is converted at the ECB reference rate of its day.

Monthly lows as a table

Month	Lowest price
November 2026	837.84 USD
October 2026	834.69 USD

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Price statistics by condition

Nobody has sold this set recently.

Sources idee+spiel: 65 · Data in Brief: 20

Latest price from each shop

Sorted: lowest price first Show highest first

Countries (all)

Show prices for

Germany (DE)

Poland (PL)

Worldwide marketplaces are always shown. Nothing ticked shows every country.

Narrow the countries ticked above to

Only sellers located there

Only prices delivered there

What each source tells us:

Shops: the country they are in, and a delivery within it. None says whether it delivers abroad.
LEGO's own shops: one storefront per country, each delivering within its country.
Hugendubel: in Germany, delivering to Germany and to Austria.
eBay: the country the item is in, and a delivery within the country of the eBay site it is listed on.
BrickLink: averages over sellers worldwide - no seller's country and no delivery.

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idee+spiel Sealed · gross · seen 11/3/2026

≈ 1,065.52 USD (950.00 EUR)

Go to shop

Data in Brief Sealed · gross · sold 5/1/2023

1,689.00 PLN

Go to shop

Amazon.com BrickDb shows no Amazon prices. The link opens a search for this set on Amazon's own site.

Advertising

See the price at Amazon

Where these prices come from

On eBay

The cheapest eBay listings we saw in the last seven days. They are sellers' asking prices, so they are not in the shop price list or the best offer.

We have not seen a current eBay listing for this set.

Recommended retail price

What LEGO published as the recommended retail price, market by market, in that market's own currency. No market's price is ever derived from another's.

Canada ≈ 441.41 USD (619.99 CAD) unknown tax basis Available since 10/2/2021 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

Germany ≈ 561.69 USD (499.99 EUR) gross Available since 10/2/2021 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

PL ≈ 617.89 USD (2,399.99 PLN) gross No availability dates published.Recorded by BrickDb since 10/21/2026

United Kingdom ≈ 576.26 USD (429.99 GBP) gross Available since 10/1/2021 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

United States 499.99 USD net Available since 10/2/2021 — still on sale as far as we know.Recorded by BrickDb since 10/2/2026

≈ marks a price converted into this currency at the ECB reference rate of its own date — a reference indication, not a tradeable rate. The price as observed follows in brackets.

Display case for this set

A display case made to fit this set, sold by a partner shop. The price is the shop's own, including VAT; delivery is extra.

Cat D11 Bulldozer Display Case for LEGO 42131 109.20 GBP grossplus 10.50 GBP deliverySold by iDisplayit · price read 10/7/2026

AdvertisingView at iDisplayit

Light kits for this set

LED lighting made to fit this set, sold by a partner shop. The price is the shop's own for its cheapest version, including VAT; delivery is extra.

20% off with the code BRICKDB20

Light Kit for Cat D11 Bulldozer 42131 from 32.99 EUR2 versionsSold by Game of Bricks · price read 11/3/2026

AdvertisingView at Game of Bricks

Building instructions

All building instructions for this set on LEGO.com

Parts in this set

243 inventory lines

Plate 3 x 3 11212· Light Bluish Gray

×1

Catalogue image of the part Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle

Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle 11214· Red

×84

Catalogue image of the part Brick Curved 2 x 1 No Studs [1/2 Bow]

Brick Curved 2 x 1 No Studs [1/2 Bow] 11477· Light Bluish Gray

×1

Catalogue image of the part Technic Beam 1 x 5 Thin with Axle Holes on Ends

Technic Beam 1 x 5 Thin with Axle Holes on Ends 11478· Black

×14

Technic Beam 1 x 5 Thin with Axle Holes on Ends 11478· Yellow

×35

Catalogue image of the part Technic Panel Fairing #21 5L Small Smooth, Side B

Technic Panel Fairing #21 5L Small Smooth, Side B 11946· Black

×2

Technic Panel Fairing #21 5L Small Smooth, Side B 11946· Yellow

×2

Catalogue image of the part Technic Panel Fairing #22 5L Small Smooth, Side A

Technic Panel Fairing #22 5L Small Smooth, Side A 11947· Black

×2

Technic Panel Fairing #22 5L Small Smooth, Side A 11947· Yellow

×2

Catalogue image of the part Technic Panel Curved 11 x 3 with 10 Pin Holes through Panel Surface

Technic Panel Curved 11 x 3 with 10 Pin Holes through Panel Surface 11954· Yellow

×4

Catalogue image of the part Wheel 18 x 8 with Fake Bolts and Deep Spokes with Inner Ring

Wheel 18 x 8 with Fake Bolts and Deep Spokes with Inner Ring 13971· Light Bluish Gray

×2

Catalogue image of the part Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes]

Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] 14720· Yellow

×3

Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] 14720· Light Bluish Gray

×1

Catalogue image of the part Brick Curved 2 x 2 x 2/3

Brick Curved 2 x 2 x 2/3 15068· Light Bluish Gray

×1

Catalogue image of the part Technic Panel 3 x 11 x 1

Technic Panel 3 x 11 x 1 15458· Black

×8

Technic Panel 3 x 11 x 1 15458· Yellow

×16

Same theme, piece count within 15 %

Similar sets

Cat D11 Bulldozer

In numbers

Product details

BrickLink market data

Can I build this?

Pricing

Price history

Latest price from each shop

On eBay

Recommended retail price

Display case for this set

Light kits for this set

Building instructions

Parts in this set

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