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4x4 Mercedes-Benz Zetros Trial Truck

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42129 4x4 Mercedes-Benz Zetros Trial Truck

2,131 pieces in 245 part and color combinations.

LEGO counts 2,110 pieces. This inventory comes from a separate parts catalog and lists 2,131; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

Before you call it missing

Builders who report a missing piece often find it in one of these places. Tick each one off as you look.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

12 more look-alike pairs
  • Technic Beam 1 x 3 Thin Black ×14 Dark Bluish Gray ×10 Black is darker than Dark Bluish Gray.
  • Technic Beam 1 x 5 Thick Black ×21 Dark Bluish Gray ×8 Black is darker than Dark Bluish Gray.
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Black ×16 Dark Bluish Gray ×8 Black is darker than Dark Bluish Gray.
  • Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick Black ×6 Dark Bluish Gray ×11 Black is darker than Dark Bluish Gray.
  • Technic Beam 2 x 4 L-Shape Thick Black ×10 Dark Bluish Gray ×17 Black is darker than Dark Bluish Gray.
  • Technic Beam 3 x 5 L-Shape Thick Black ×3 Dark Bluish Gray ×8 Black is darker than Dark Bluish Gray.
  • Technic Panel 3 x 11 x 1 Black ×7 Dark Bluish Gray ×3 Black is darker than Dark Bluish Gray.
  • Technic Panel 3 x 7 x 1 Black ×8 Dark Bluish Gray ×3 Black is darker than Dark Bluish Gray.
  • Technic Panel 5 x 11 x 1 Black ×1 Dark Bluish Gray ×5 Black is darker than Dark Bluish Gray.
  • Technic Panel Curved 11 x 3 with 2 Pin Holes through Panel Surface Black ×4 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
  • Technic Pin Connector Round 1L [Beam] Black ×23 Dark Bluish Gray ×20 Black is darker than Dark Bluish Gray.
  • Tile 1 x 1 with Groove Black ×2 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
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Piece checklist

Black 856 pieces

  • Bar 1 x 3 (Radio Handle, Phone Handset) Black Part 6190 Element 6151289 or 4224675 ×2
  • Bar 1L with Clip [Cut Edges and One Side Hole] [Gap in Clip] Black Part 48729b Element 6278152 or 6037347 1 spare in the box ×3
  • Bar 4L (Lightsaber Blade / Wand) Black Part 30374 Element 6116604 or 4140303 Also in Dark Bluish Gray ×3
  • Bar 6L with Stop Ring Black Part 63965 Element 6170421 or 6081988 ×4
  • Bracket 1 x 2 - 1 x 2 Inverted Black Part 99780 Element 6020193 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Black Part 11477 Element 6047276 ×1
  • Brick Curved 4 x 1 Double, No Studs Black Part 93273 Element 4613153 ×1
  • Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end Black Part 25214 Element 6179182 ×6
  • Brick Round 2 x 2 with Axle Hole Black Part 3941 Element 614376 or 614326 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 1 spare in the box ×1
  • Cone 1 x 1 [Top Groove] Black Part 59900 Element 4529236 ×2
  • Dish 3 x 3 Inverted [Radar] Black Part 43898 Element 4180087 ×1
  • Dish 6 x 6 Inverted (Radar) with Solid Studs Black Part 44375b Element 6058341 ×4
  • Equipment Hose Nozzle / Gun with Side String Hole Simplified Black Part 60849 Element 6641462 or 4537551 1 spare in the box ×2
  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 1 spare in the box ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×4
  • Plate 1 x 3 Black Part 3623 Element 362326 Also in Dark Bluish Gray ×4
  • Plate 1 x 4 Black Part 3710 Element 371026 ×1
  • Plate 2 x 4 Black Part 3020 Element 302026 ×4
  • Plate 3 x 3 Black Part 11212 Element 6174917 ×1
  • Plate Round 1 x 1 with Open Stud Black Part 85861 Element 6168646 or 6100627 1 spare in the box ×4
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×11
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Black Part 2654 Element 4617551 or 4278359 ×2
  • Plate Special 1 x 2 with Pin Hole Underneath Black Part 18677 Element 6192309 or 6167497 ×10
  • Plate Special 2 x 2 Splat Gear, 6 Teeth Black Part 35442 Element 6306064 ×2
  • Plate Special 2 x 2 with 2 Pin Holes Black Part 2817 Element 281726 ×5
  • Plate Special 3 x 4 with 1 x 4 Center Studs [Plain] Black Part 88646 Element 6076678 or 4571146 ×2
  • Plate Special Round 1 x 1 with Hollow Stud and Horizontal Bar 1L Black Part 32828 Element 6196548 1 spare in the box ×2
  • Shield Round Bowed with Silver Mesh and Mercedes Logo Print Black Part 75902pr0028 Element 6369390 ×1
  • Technic Axle 10 Black Part 3737 Element 373726 ×4
  • Technic Axle 4 Black Part 3705 Element 370526 ×5
  • Technic Axle Connector with Axle Hole [Reinforced] Black Part 42135 Element 6331716 Also in Dark Bluish Gray ×15
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×42
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×10
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 ×19
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Black Part 32184 Element 6276951 or 4121667 Also in Dark Bluish Gray ×1
  • Technic Axle and Pin Connector Perpendicular Split Black Part 92907 Element 6279021 or 4610371 ×2
  • Technic Axle and Pin Connector Perpendicular Triple Black Part 63869 Element 6362991 or 6007966 ×2
  • Technic Beam 1 x 11 Thick with Alternating Holes Black Part 73507 Element 6330585 ×9
  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×2
  • Technic Beam 1 x 13 Thick Black Part 41239 Element 4522933 or 4164422 ×15
  • Technic Beam 1 x 15 Thick with Alternating Holes Black Part 71710 Element 6321716 ×2
  • Technic Beam 1 x 2 Thick Black Part 43857 Element 4385726 or 4177444 ×8
  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 Also in Dark Bluish Gray ×26
  • Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 Also in Dark Bluish Gray ×10
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 Also in Dark Bluish Gray ×14
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 Also in Dark Bluish Gray ×21
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Black Part 11478 Element 6327028 or 6030286 Also in Dark Bluish Gray ×16
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Black Part 6629 Element 6279881 or 4119800 ×4
  • Technic Beam 1 x 9 Thick Black Part 40490 Element 4645732 or 4542788 ×4
  • Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick Black Part 71708 Element 6326047 Also in Dark Bluish Gray ×6
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 Also in Dark Bluish Gray ×10
  • Technic Beam 3 x 3 L-Shape Thin Black Part 32056 Element 6271810 or 4112287 ×12
  • Technic Beam 3 x 3 T-Shape Thick Black Part 60484 Element 4552347 or 4535771 ×13
  • Technic Beam 3 x 5 L-Shape Thick Black Part 32526 Element 4142823 or 3252626 Also in Dark Bluish Gray ×3
  • Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick Black Part 64179 Element 6016154 ×4
  • Technic Beam Frame 7 x 11 Black Part 39794 Element 6265643 ×2
  • Technic Connector Beam 3 x 3 Black Part 39793 Element 6265644 ×2
  • Technic Disc 3 x 3 Black Part 2723 Element 4218868 or 4121619 ×1
  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×6
  • Technic Gear Rack 1 x 7 with Axle and Pin Holes Black Part 87761 Element 6327430 or 4562009 ×1
  • Technic Panel 3 x 11 x 1 Black Part 15458 Element 6080356 Also in Dark Bluish Gray ×7
  • Technic Panel 3 x 7 x 1 Black Part 71709 Element 6331935 Also in Dark Bluish Gray ×8
  • Technic Panel 5 x 11 x 1 Black Part 64782 Element 4566243 Also in Dark Bluish Gray ×1
  • Technic Panel Curved 11 x 3 with 2 Pin Holes through Panel Surface Black Part 62531 Element 6214731 or 4530578 Also in Dark Bluish Gray ×4
  • Technic Panel Curved 7 x 3 with 2 Pin Holes through Panel Surface Black Part 24119 Element 6150082 ×2
  • Technic Panel Curved and Bent 6 x 3 Black Part 24116 Element 6268012 or 6133246 ×3
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes] Black Part 44874 Element 6366229 ×9
  • Technic Pin Connector Round 1L [Beam] Black Part 18654 Element 6121485 2 spares in the box Also in Dark Bluish Gray ×23
  • Technic Pin Connector Round [Slotted] Black Part 62462 Element 6173119 or 4526982 ×25
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Black Part 65304 Element 6321745 ×14
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 3 spares in the box ×348
  • Technic Steering Wheel Small (3 Studs Diameter) Black Part 2819 Element 4580509 or 4160709 ×1
  • Technic Wedge Belt Wheel [aka Pulley] Black Part 4185 Element 6323668 or 6192130 ×2
  • Tile 1 x 1 with Groove Black Part 3070b Element 307026 1 spare in the box Also in Dark Bluish Gray ×2
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×3
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 ×1
  • Tile 1 x 8 with Groove Black Part 4162 Element 416226 ×1
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×3
  • Tile 2 x 3 Black Part 26603 Element 6162892 ×2
  • Tile Round 1 x 1 Black Part 98138 Element 6284070 or 6139403 1 spare in the box ×3
  • Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×5
  • Tile Special Round 2 x 2 with Hole Black Part 15535 Element 6143850 ×6
  • Tyre 81 x 35 Tractor Black Part 69912 Element 6322450 ×4

Dark Bluish Gray 402 pieces

  • Bar 2L with Towball Dark Bluish Gray Part 22484 Element 6364352 or 6360117 ×1
  • Bar 3L Dark Bluish Gray Part 87994 Element 6310596 ×2
  • Bar 4L (Lightsaber Blade / Wand) Dark Bluish Gray Part 30374 Element 6378143 or 6353308 Also in Black ×4
  • Brick Round 2 x 2 [Grill] Dark Bluish Gray Part 92947 Element 6268169 ×1
  • Brick Wedged, Curved 2 x 1 with Stud Notch Left Dark Bluish Gray Part 29120 Element 6204668 ×1
  • Brick Wedged, Curved 2 x 1 with Stud Notch Right Dark Bluish Gray Part 29119 Element 6204667 ×1
  • Clutch Inner Side with Axle Connector Dark Bluish Gray Part 46835 Element 6257337 ×2
  • Motor, Large, Powered Up Dark Bluish Gray Part 22169 Element 6545732 or 6456189 ×3
  • Plate 1 x 1 Dark Bluish Gray Part 3024 Element 4210719 1 spare in the box ×6
  • Plate 1 x 3 Dark Bluish Gray Part 3623 Element 4211133 Also in Black ×2
  • Plate Special 1 x 2 with Pin Hole on Top Dark Bluish Gray Part 11458 Element 6019987 ×2
  • Plate Special Round 2 x 2 with Center Stud (Jumper Plate) Dark Bluish Gray Part 18674 Element 6115080 ×1
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×26
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×1
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×3
  • Technic Axle Connector Smooth [with x Hole + Orientation] Dark Bluish Gray Part 59443 Element 6084613 or 4516546 ×29
  • Technic Axle Connector with Axle Hole [Reinforced] Dark Bluish Gray Part 42135 Element 6375679 Also in Black ×10
  • Technic Axle and Pin Connector Angled #3 - 157.5° Dark Bluish Gray Part 32016 Element 6366184 or 6283865 ×2
  • Technic Axle and Pin Connector Angled #4 - 135° Dark Bluish Gray Part 32192 Element 6262899 or 4210688 ×4
  • Technic Axle and Pin Connector Perpendicular Dark Bluish Gray Part 6536 Element 6536199 or 6261374 ×34
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Dark Bluish Gray Part 42003 Element 6273715 or 4210857 ×5
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Dark Bluish Gray Part 32184 Element 32184199 or 6276984 Also in Black ×10
  • Technic Axle and Pin Connector Perpendicular Double Split [Reinforced] Dark Bluish Gray Part 69819 Element 6349479 ×2
  • Technic Axle and Pin Connector Toggle Joint Smooth Dark Bluish Gray Part 32126 Element 6457116 or 6353304 ×10
  • Technic Beam 1 x 11 Thick Dark Bluish Gray Part 32525 Element 4603472 or 4534914 ×21
  • Technic Beam 1 x 15 Thick Dark Bluish Gray Part 32278 Element 32278199 or 4542576 ×2
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Dark Bluish Gray Part 60483 Element 6265093 or 6006141 ×11
  • Technic Beam 1 x 2 Thin Dark Bluish Gray Part 41677 Element 6338422 or 4210980 Also in Black ×29
  • Technic Beam 1 x 3 Thick Dark Bluish Gray Part 32523 Element 32523199 or 4210751 Also in Black ×8
  • Technic Beam 1 x 3 Thin Dark Bluish Gray Part 6632 Element 6632199 or 6364452 Also in Black ×10
  • Technic Beam 1 x 4 Thin Dark Bluish Gray Part 32449 Element 6327561 or 4210749 ×10
  • Technic Beam 1 x 5 Thick Dark Bluish Gray Part 32316 Element 32316199 or 4210686 Also in Black ×8
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Dark Bluish Gray Part 11478 Element 6370946 or 6029951 Also in Black ×8
  • Technic Beam 1 x 7 Thick Dark Bluish Gray Part 32524 Element 4495931 or 4210752 ×11
  • Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick Dark Bluish Gray Part 71708 Element 6353303 Also in Black ×11
  • Technic Beam 2 x 4 L-Shape Thick Dark Bluish Gray Part 32140 Element 6271830 or 4210667 Also in Black ×17
  • Technic Beam 3 x 5 L-Shape Thick Dark Bluish Gray Part 32526 Element 4210753 Also in Black ×8
  • Technic Driving Ring 3L Dark Bluish Gray Part 18947 Element 6100931 ×2
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Dark Bluish Gray Part 3648b Element 6133119 or 4514558 ×3
  • Technic Gear 8 Tooth [Reinforced] Dark Bluish Gray Part 10928 Element 6631413 or 6012451 ×1
  • Technic Link 1 x 6 without Stoppers Dark Bluish Gray Part 32005a Element 4629920 or 4211026 ×1
  • Technic Panel 3 x 11 x 1 Dark Bluish Gray Part 15458 Element 6127205 Also in Black ×3
  • Technic Panel 3 x 7 x 1 Dark Bluish Gray Part 71709 Element 6321715 Also in Black ×3
  • Technic Panel 5 x 11 x 1 Dark Bluish Gray Part 64782 Element 6207990 Also in Black ×5
  • Technic Panel Curved 11 x 3 with 2 Pin Holes through Panel Surface Dark Bluish Gray Part 62531 Element 6537708 or 6361938 Also in Black ×2
  • Technic Panel Fairing #21 5L Small Smooth, Side B Dark Bluish Gray Part 11946 Element 6330085 or 6197965 ×1
  • Technic Panel Fairing #22 5L Small Smooth, Side A Dark Bluish Gray Part 11947 Element 6352665 or 6197945 ×1
  • Technic Pin Connector Hub with 1 Axle Dark Bluish Gray Part 22961 Element 6135014 ×20
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Dark Bluish Gray Part 65487 Element 6282144 ×4
  • Technic Pin Connector Hub with 2 Axles Dark Bluish Gray Part 27940 Element 6167281 ×4
  • Technic Pin Connector Hub with 2 Perpendicular Axles Dark Bluish Gray Part 10197 Element 6005331 ×6
  • Technic Pin Connector Round 1L [Beam] Dark Bluish Gray Part 18654 Element 6100030 1 spare in the box Also in Black ×20
  • Technic Steering / CV Ball Joint Female with 3L Axle Dark Bluish Gray Part 52730 Element 6261793 ×6
  • Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Dark Bluish Gray Part 48267 Element 6504969 or 6285600 ×2
  • Tile 1 x 1 with Groove Dark Bluish Gray Part 3070b Element 4210848 1 spare in the box Also in Black ×2

Light Bluish Gray 314 pieces

  • Brick 1 x 3 Light Bluish Gray Part 3622 Element 4211428 ×1
  • Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end Light Bluish Gray Part 25214 Element 6151349 ×2
  • Brick Round 2 x 2 [Grill] Light Bluish Gray Part 92947 Element 4650645 or 4610816 ×7
  • Brick Sloped 45° 2 x 1 with 2/3 Cutout [New Version] Light Bluish Gray Part 15672 Element 6093859 ×3
  • Differential Gear House Light Bluish Gray Part 65414 Element 6285647 ×2
  • Hub, Powered Up 4-Port (Technic Control+) - Screw Opening Light Bluish Gray Part 85824 Element 6588258 or 6380608 ×1
  • Plate 1 x 3 Light Bluish Gray Part 3623 Element 4211429 or 3623194 ×1
  • Plate 2 x 2 Light Bluish Gray Part 3022 Element 4211397 ×1
  • Plate 2 x 3 Light Bluish Gray Part 3021 Element 4211396 ×3
  • Plate 3 x 3 Light Bluish Gray Part 11212 Element 6015347 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Light Bluish Gray Part 4032a Element 4211475 ×1
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Light Bluish Gray Part 61252 Element 6335378 or 4541978 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×48
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×5
  • Technic Axle Towball Light Bluish Gray Part 2736 Element 6443149 or 4211375 ×3
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Light Bluish Gray Part 42003 Element 6273724 or 4211779 ×12
  • Technic Axle and Pin Connector Perpendicular Triple Light Bluish Gray Part 63869 Element 6331441 or 4538007 ×19
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Light Bluish Gray Part 60483 Element 6265089 or 6004888 ×8
  • Technic Beam 1 x 4 Thin with Stud Connector Light Bluish Gray Part 2825 Element 6331574 or 4211561 ×8
  • Technic Beam 1 x 6 Thin Light Bluish Gray Part 32063 Element 6170293 or 4211586 ×8
  • Technic Beam 1 x 9 Thick Light Bluish Gray Part 40490 Element 6102449 or 4211866 ×1
  • Technic Beam Triangle Thin [Type II] Light Bluish Gray Part 99773 Element 6331428 or 6009019 ×4
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×7
  • Technic Gear 16 Tooth Reinforced [New Style] Light Bluish Gray Part 94925 Element 4640536 ×12
  • Technic Pin 1/2 with 2L Bar Extension Light Bluish Gray Part 61184 Element 6347715 or 4520320 ×2
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 3 spares in the box ×47
  • Technic Pin Connector Hub Perpendicular 3 x 3 Bent with 4 Pins (Pin Ridges Along Part) Light Bluish Gray Part 49130 Element 6313453 ×2
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins (Squared Holes) Light Bluish Gray Part 65489 Element 6282158 ×7
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Light Bluish Gray Part 65487 Element 6282142 ×32
  • Technic Pin Connector Perpendicular Long Light Bluish Gray Part 32557 Element 4211714 ×4
  • Technic Pin Connector Round 1L [Beam] Light Bluish Gray Part 18654 Element 6183784 1 spare in the box ×3
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Light Bluish Gray Part 65304 Element 6321747 ×20
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×3
  • Technic Steering / CV Ball Joint Male 3L Light Bluish Gray Part 52731 Element 6262968 ×7
  • Technic Steering / CV Ball Joint, Cardan Ball with Cross Hole 3L Light Bluish Gray Part 77590 Element 6338424 ×3
  • Technic Steering Arm 5 x 1 with Towball Socket (Type2) Light Bluish Gray Part 31794 Element 6247352 ×10
  • Technic Steering Wheel Hub with Planetary Gear Reduction Light Bluish Gray Part 46490 Element 6365803 or 6324050 ×4
  • Tile 2 x 2 with Groove Light Bluish Gray Part 3068b Element 4211413 ×1
  • Tile 2 x 4 with Groove Light Bluish Gray Part 87079 Element 4560183 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Light Bluish Gray Part 2412b Element 4211350 ×3
  • Tile Special Round 1 x 1 with Hollow Bar Light Bluish Gray Part 20482 Element 6258831 ×1
  • Tile Special Round 2 x 2 with Hole Light Bluish Gray Part 15535 Element 6179186 ×1
  • Wheel 43.2 x 26 Technic Racing Small with 6 Pinholes Light Bluish Gray Part 56908 Element 6276854 or 4634091 ×4

Blue 233 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×102
  • Technic Gear 20 Tooth Double Bevel with Clutch on Both Sides Blue Part 35185 Element 6224999 ×1
  • Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×128
  • Wire Clip with Axle Hole Blue Part 49283 Element 6263071 ×2

Red 135 pieces

  • Brick Round 2 x 2 Dome Top, Hollow Stud Red Part 30367c Element 4216657 ×2
  • Brick Round 2 x 2 with Axle Hole Red Part 3941 Element 614321 or 394121 ×4
  • Differential Gear - 28 Tooth with Round Axle Hole Red Part 65413 Element 6285646 ×2
  • Flag 2 x 2 Square, Flat Clip Edge [Thick Clips] Red Part 11055 Element 6011814 ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×33
  • Technic Axle 4 Red Part 3705 Element 6129995 or 4265797 ×3
  • Technic Axle 6 Red Part 3706 Element 6130002 or 4191526 ×5
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Red Part 11214 Element 6209519 ×41
  • Technic Beam 3 x 0.5 Liftarm with Boss and Blocked, Squared Pin Hole Red Part 61408 Element 6331864 ×1
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×18
  • Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Red Part 42195 Element 6273211 ×4
  • Technic Gear 16 Tooth with Clutch on Both Sides Red Part 18946 Element 6100930 ×4
  • Technic Gear Differential, 24 -16 Tooth with Clutch on Both Sides Red Part 6573 Element 6510296 or 6188245 ×1
  • Technic Pin with Friction Ridges Lengthwise and Towball - Round Pin Hole Red Part 66906 Element 6360104 ×9
  • Technic Shock Absorber 6.5L with Hard Spring, Tight Coils at End, Black Rod [Complete Assembly] Red Part 89954c01 Element 6378481 ×4
  • Wire Clip with Axle Hole Red Part 49283 Element 6263067 ×2

Tan 43 pieces

  • Technic Axle 4 with Centre Stop Tan Part 99008 Element 4666999 ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×10
  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×13
  • Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Tan Part 18575 Element 6346517 or 6084724 ×2
  • Technic Pin 3/4 Tan Part 32002 Element 6663097 or 6013938 1 spare in the box ×6
  • Technic Pin Long without Friction Ridges, with Anti-Roll Notch Tan Part 39888 Element 6321305 ×10

White 37 pieces

  • Brick Round 2 x 2 with Axle Hole White Part 3941 Element 6601920 or 614351 ×2
  • Clutch Outer Side with Axle Connector White Part 46834 Element 6257336 ×2
  • Flag 2 x 2 Square, Flat Clip Edge [Thick Clips] White Part 11055 Element 6011794 ×6
  • Motor, Medium, We-Do 2.0 White Part 21980 Element 6456177 or 6290182 ×1
  • Technic Axle and Pin Connector Perpendicular White Part 6536 Element 6261372 or 4173670 ×1
  • Technic Beam 1 x 3 Thick White Part 32523 Element 6632140 or 4208160 ×14
  • Technic Connector Beam 3 x 3 White Part 39793 Element 6247424 ×3
  • Technic Pin Connector Round [Slotted] White Part 62462 Element 6550164 or 6173116 ×6
  • Wire Clip with Axle Hole White Part 49283 Element 6278194 ×2

Bright Green 23 pieces

  • Bar 3L Bright Green Part 87994 Element 6161772 1 spare in the box ×1
  • Technic Beam 1 x 11 Thick Bright Green Part 32525 Element 6598705 or 6295195 ×9
  • Technic Beam 1 x 2 Thick Bright Green Part 43857 Element 6316318 ×4
  • Technic Beam 1 x 7 Thick Bright Green Part 32524 Element 6097392 ×5
  • Technic Beam 3 x 5 L-Shape Thick Bright Green Part 32526 Element 6097397 ×4

Reddish Brown 21 pieces

  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×18
  • Technic Axle 5 with Stop Reddish Brown Part 15462 Element 6159763 ×3

Yellow 20 pieces

  • Animal, Bird, Duck / Duckling with Black Eyes, Orange Beak Yellow Part 49661pr0001 Element 6269141 ×1
  • Technic Axle 5 Yellow Part 32073 Element 6130008 ×16
  • Technic Axle 9 Yellow Part 60485 Element 6130010 ×3

Trans-Orange 19 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Orange Part 54200 Element 6245265 or 4244369 1 spare in the box ×2
  • Plate 1 x 1 Trans-Orange Part 3024 Element 6513961 or 6252040 1 spare in the box ×3
  • Tile 1 x 1 with Groove Trans-Orange Part 3070b Element 6514258 or 6254252 1 spare in the box ×2
  • Tile 1 x 2 with Groove Trans-Orange Part 3069b Element 6514225 or 6251306 ×2
  • Tile Round 1 x 1 Trans-Orange Part 98138 Element 6514197 or 6274747 1 spare in the box ×10

Trans-Clear 10 pieces

  • Dish 3 x 3 Inverted [Radar] Trans-Clear Part 43898 Element 6507917 or 6244730 ×2
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Clear Part 2654 Element 6581772 or 6163901 ×2
  • Tile 1 x 2 with Groove Trans-Clear Part 3069b Element 6514223 or 6251294 ×2
  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 1 spare in the box ×4

Olive Green 4 pieces

  • Technic Beam 1 x 5 Thick Olive Green Part 32316 Element 6278029 ×4

Trans-Red 4 pieces

  • Tile 1 x 2 with Groove Trans-Red Part 3069b Element 6514220 or 6251290 ×4

Dark Tan 3 pieces

  • Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×3

Flat Silver 2 pieces

  • Hose, Ribbed 7mm D. 3L / 2.4cm Flat Silver Part 78c03 Element 6420614 or 6116017 ×1
  • Propeller 8 Blade 5 Diameter Flat Silver Part 41530 Element 6325297 or 6289758 ×1

Green 2 pieces

  • Plate 1 x 2 Green Part 3023 Element 302328 ×1
  • Wire Clip with Axle Hole Green Part 49283 Element 6263072 ×1

Orange 2 pieces

  • Gear Shifter Orange Part 35188 Element 6227330 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 42129-1 [No Color/Any Color] Part 77604 Element 6338500 ×1

Tick each piece as you find it, or mark it missing.

When a piece really is missing

Ask LEGO

LEGO takes requests for pieces missing from a new set through its customer service site. The form asks for the set number and each piece's element ID, the number printed beside the piece in the parts list at the back of the instructions. This checker lists both.

Request a replacement from LEGO

Buy the piece

Mark a piece missing and your list links it to an eBay search for that part, which also covers pieces from older or second-hand sets.

Keep a record

Copy or download your missing list (the CSV opens in any spreadsheet), or print the whole checklist and tick pieces off on paper. Your marks stay in this browser, so you can check a big set over several sittings.

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