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. Collectors browsing Technic sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. 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/4180087.jpg)
Dish 3 x 3 Inverted [Radar]43898 · ×2 · Black -
![Dish 3 x 3 Inverted [Radar]](https://cdn.rebrickable.com/media/parts/elements/4179584.jpg)
Dish 3 x 3 Inverted [Radar]43898 · ×2 · Red -
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 · Light Bluish Gray -
Plate 1 x 33623 · ×1 · Black -
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