Cat D11 Bulldozer (42131-1) is a Technic LEGO set released in 2021 with 3,854 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. This set includes 231 unique part types.
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Building instructions
2 official booklets — read on BrickID
Book 1 of 2 · US Letter Book 2 of 2 · US Letter
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Parts in this set
231 parts · page 1 of 5 · updating…
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Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end25214 · ×6 · Light Bluish Gray -
![Brick Round 2 x 2 D. Tube with 45° Elbow and Axle Holes (Crossholes) at Each End [SHORT]](https://cdn.rebrickable.com/media/parts/elements/6305216.jpg)
Brick Round 2 x 2 D. Tube with 45° Elbow and Axle Holes (Crossholes) at Each End [SHORT]65473 · ×2 · Black -
Brick Round 2 x 2 with Axle Hole3941 · ×24 · Black -
Brick Round 2 x 2, Pin Holes17485 · ×6 · Black -
Clutch Inner Side with Axle Connector46835 · ×1 · Dark Bluish Gray -
Clutch Outer Side with Axle Connector46834 · ×1 · White -
![Dish 3 x 3 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/4179584.jpg)
Dish 3 x 3 Inverted [Radar]43898 · ×2 · Red -
![Dish 3 x 3 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/4180087.jpg)
Dish 3 x 3 Inverted [Radar]43898 · ×2 · Black -
Gear Shifter35188 · ×1 · Orange -
Hub, Powered Up 4-Port (Technic Control+) - Clip Opening22127 · ×1 · Light Bluish Gray -
Large Figure Weapon, Barrel with 2 Pin Holes and 3 Axle Holes98585 · ×6 · Red -
Motor, Large Angular Position, Light Bluish Gray Housing, Black Wire69730 · ×2 · Dark Bluish Gray -
Motor, Large, Powered Up22169 · ×2 · Dark Bluish Gray -
Plate 1 x 13024 · ×1 · Black -
Plate 1 x 33623 · ×1 · Black -
Plate 1 x 33623 · ×1 · Light Bluish Gray -
Plate 1 x 43710 · ×2 · Light Bluish Gray -
Plate 2 x 122445 · ×2 · Light Bluish Gray -
Plate 2 x 1491988 · ×1 · Light Bluish Gray -
Plate 2 x 2 Corner2420 · ×2 · Black -
Plate 2 x 43020 · ×1 · Black -
Plate 3 x 311212 · ×1 · Light Bluish Gray -
Plate Round 1 x 1 with Solid Stud6141 · ×2 · Red -
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)4032a · ×16 · Black -
Plate Special 1 x 2 with Pin Hole Underneath18677 · ×2 · Black -
Plate Special 1 x 2 with Pin Hole Underneath18677 · ×6 · Light Bluish Gray -
Plate Special 1 x 3 with 2 Studs with Groove and Inside Stud Holder (Jumper)34103 · ×1 · Light Bluish Gray -
![Plate Special 4 x 4 with Studs on One Edge [Plain]](https://cdn.rebrickable.com/media/parts/elements/4525895.jpg)
Plate Special 4 x 4 with Studs on One Edge [Plain]6179 · ×1 · Yellow -
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)18674 · ×2 · Light Bluish Gray -
Slope 30° 1 x 2 x 2/385984 · ×3 · Light Bluish Gray -
![Slope Curved 2 x 1 No Studs [1/2 Bow]](https://cdn.rebrickable.com/media/parts/elements/6028813.jpg)
Slope Curved 2 x 1 No Studs [1/2 Bow]11477 · ×1 · Light Bluish Gray -
Slope Curved 2 x 2 x 2/315068 · ×1 · Light Bluish Gray -
Sticker Sheet for Set 42131-177607 · ×1 · [No Color/Any Color] -
Technic Axle 103737 · ×2 · Red -
Technic Axle 1123948 · ×7 · Light Bluish Gray -
Technic Axle 123708 · ×5 · Black -
Technic Axle 1650451 · ×2 · Black -
Technic Axle 2 Notched32062 · ×104 · Red -
Technic Axle 34519 · ×98 · Light Bluish Gray -
Technic Axle 3 with Stop24316 · ×7 · Reddish Brown -
Technic Axle 3 with Stud6587 · ×4 · Dark Tan -
Technic Axle 43705 · ×26 · Black -
Technic Axle 4 with Stop87083 · ×26 · Dark Bluish Gray -
Technic Axle 532073 · ×44 · Yellow -
Technic Axle 5 with Stop15462 · ×14 · Reddish Brown -
![Technic Axle 5.5 with Stop [Rounded Short End]](https://cdn.rebrickable.com/media/parts/elements/4508553.jpg)
Technic Axle 5.5 with Stop [Rounded Short End]59426 · ×2 · Dark Bluish Gray -
Technic Axle 63706 · ×7 · Red -
Technic Axle 744294 · ×14 · Light Bluish Gray