How many pieces does the LEGO Heavy-Duty Excavator (42121-1) have?

The LEGO Heavy-Duty Excavator set (42121-1) contains 569 pieces. It was released in 2021 as part of the LEGO Technic theme.

How can I find missing parts for LEGO set 42121-1?

On BrickMissing you can check which parts from the LEGO Heavy-Duty Excavator (42121-1) you already own. Add your LEGO collection and we'll show exactly which of the 569 pieces you're missing and which you already have.

Can I build the LEGO Heavy-Duty Excavator with parts I already have?

Use BrickMissing's free parts checker to find out. Add LEGO sets you own to your collection and we'll cross-reference all 569 parts to show your buildability percentage and which specific pieces you still need.

What theme is the LEGO Heavy-Duty Excavator from?

The LEGO Heavy-Duty Excavator (42121-1) belongs to the LEGO Technic theme. You can browse all Technic sets on BrickMissing to find more sets from this theme.

Heavy-Duty Excavator

42121-1 Technic 2021 569 parts 0.9% catalog rarity Intermediate

The LEGO Technic Heavy-Duty Excavator (42121-1) offers an intricate look at construction machinery. This 569-piece model features a shovel that moves up and down, a movable arm, and running belts for movement. The excavator body rotates 360 degrees, and its cabin includes a driver's seat and control panel. The set comes with LEGO brick ‘stones’ for digging and four cones. As a 2-in-1 build, the model reconstructs into a tracked tractor equipped with a backhoe, demonstrating Technic's mechanical design principles.

42121-1

3D build progress

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Parts Inventory

🧱 569 parts

Showing the first 12 rows of the parts list (569 pieces in total). The full list loads automatically.

Color	Qty	LEGO price each
Dark Bluish Gray	6×	€0,15 View at LEGO → View
Red	7×	€0,29 View at LEGO → View
Red	1×	€0,06 View at LEGO → View
Black	2×	€0,25 View at LEGO → View
Yellow	1×	€0,38 View at LEGO → View
Yellow	4×	€0,13 View at LEGO → View
Black	86×	€0,13 View at LEGO → View
Black	1×	€0,06 View at LEGO → View
Tan	1×	€0,36 View at LEGO → View
Black	12×	€0,08 View at LEGO → View
Black	5×	€0,05 View at LEGO → View
Light Bluish Gray	1×	€0,05 View at LEGO → View