LEGO® Set 42121 - "Heavy Duty Excavator" includes the following parts and minifigures
Quick result
Three ways to quickly find your LEGO® part. Choose one of the 3 options.1
Search
You can find the LEGO® part number at the back of the construction manual.
2
Show
If you are looking for one or more parts from a LEGO® set, this is the best search option.
3
Choose
Choose a category to refine your search. Further refine with sub-categories, color and/or dimensions.
Filter
Use the categories or color options below to refine the number of parts found. Depending on the category, you can filter with a sub-category or a size option.
116 products found
Become a member of ToyPro
Receive the weekly ToyPro newsletter and stay up to date on the latest news about ToyPro and LEGO®, MOCs and much more. Discover LEGO®
Successful! ToyPro will keep you updated from now on. Welcome to the club.
Check out the 2026 LEGO® catalog!
Browse through the LEGO® catalog and be surprised.
Light up your LEGO® sets!
Discover all Lightailing light sets here
LEGO® 6356106
Technic, Axle and Pin Connector Block 4 x 3 x…
$1.31
1x needed Sold out for now!
LEGO® 6173119
Technic, Pin Connector Round with Slot (Pin Joiner Round)
$0.37
4x needed 
LEGO® 6362991
Technic, Axle and Pin Connector Perpendicular Triple
$0.14
2x needed Sold out for now!
LEGO® 4519010
Technic, Axle Connector (Smooth with x Hole + Orientation)
$0.16
1x needed 
LEGO® 6332412
Technic, Liftarm, Modified L-Shape Quarter Ellipse Thick 2 x 3
$0.80
4x needed 
LEGO® 6326047
Technic, Liftarm, Modified L-Shape Quarter Ellipse Thick 2 x 3
$0.46
2x needed 
LEGO® 6321303
Technic, Pin Long with Friction Ridges Lengthwise and Center Pin…
$0.31
5x needed 
LEGO® 6221464
Technic Linear Actuator Mini with Dark Bluish Gray Head and…
$6.53
2x needed 
LEGO® 6331437
Liftarm 5 x 3 Thin, Triangle - Type II
$0.23
$0.33
4x needed
-25%
Sold out for now!
