Ten Sealed CAT D11 Bulldozer Sets From LEGO Technic, 3,854 Pieces Each

These ten sealed LEGO bulldozer sets are all one model: Technic 42131, the CAT D11. Every box is new, factory sealed and holds the same 3,854-piece build.

Highlights from this lot

With ten identical units there is nothing to sort, which keeps listing and counting simple.

• Ten copies of one set: Technic CAT D11 Bulldozer, number 42131
• Each carton holds 3,854 pieces
• Drive the motors from a screen using the CONTROL+ app
• A Caterpillar collaboration rated 18+

By the numbers

All ten cartons are unopened, still wearing factory seals in LEGO retail packaging. The manifest is the same line repeated ten times and then totalled, so no mixed content needs separating. One grade applies to the lot as a whole.

Best fit buyers

Adult collectors are the core audience, so toy shops, hobby stores and sellers on eBay, Whatnot and Facebook Marketplace are natural homes. Amazon listing is possible for sealed LEGO where your account has approval.

Sell-through tips

• Check each carton corner and seal on arrival, and photograph the set number on every box.
• Keep a few boxes back and release them one at a time to hold a steady price.
• Mention the CONTROL+ app and the 3,854-piece count in titles, because builders search by both.

How delivery works

Carriage is part of the price, so checkout shows no freight line, wherever the boxes go. In the US a liftgate truck brings them to your door. You will receive tracking by email when the carrier is booked, and buyers abroad cover import charges themselves. Returns are accepted within 14 days.

Buyer Q&A

Are all ten boxes the same set?

Yes. Every unit is Technic CAT D11 Bulldozer 42131.

Who builds a set this size?

It carries an 18+ rating, so it targets adult builders and collectors.

Itemized lot manifest