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LEGO Missing Piece Checker

Rule out the usual hiding places first. If the piece really is gone, check the set piece by piece and leave with the element ID LEGO asks for, or a link to buy the part.

4WD

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8435 4WD

763 pieces in 136 part and color combinations.

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.

2 more look-alike pairs
  • Technic Beam 5 x 7 L-Shape with Quarter Ellipse Thin Black ×2 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
  • Technic Pin Connector Perpendicular 2 x 2 Bent Black ×2 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
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Piece checklist

Technic Beams 165 pieces

  • Technic Beam 1 x 11 Thick Black Part 32525 Element 6029578 or 4534909 ×6
  • Technic Beam 1 x 13 Thick Black Part 41239 Element 4522933 or 4164422 ×3
  • Technic Beam 1 x 2 Thick Black Part 43857 Element 4385726 or 4177444 ×2
  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×4
  • Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 Also in Dark Bluish Gray ×3
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 Also in Dark Bluish Gray ×4
  • Technic Beam 1 x 4 Thin Black Part 32449 Element 6327548 or 4142236 ×6
  • Technic Beam 1 x 4 Thin with Stud Connector Black Part 2825 Element 6331570 or 4107136 ×2
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×2
  • Technic Beam 1 x 9 Thick Black Part 40490 Element 4645732 or 4542788 ×5
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×8
  • Technic Beam 3 x 5 L-Shape Thick Black Part 32526 Element 4142823 or 3252626 ×6
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Black Part 32250 Element 6327162 or 4128557 Also in Dark Bluish Gray ×2
  • Technic Beam 5 x 7 L-Shape with Quarter Ellipse Thin Black Part 32251 Element 4240081 or 4141517 Also in Dark Bluish Gray ×2
  • Technic Beam Triangle Thin [Type I] Black Part 2905 Element 4142543 or 290526 ×4
  • Technic Beam 1 x 11 Thick Blue Part 32525 Element 6390388 or 6057859 ×8
  • Technic Beam 1 x 11.5 Double Bent Thick Blue Part 32009 Element 6271153 or 4112000 ×4
  • Technic Beam 1 x 13 Thick Blue Part 41239 Element 6302337 or 6173125 ×5
  • Technic Beam 1 x 15 Thick Blue Part 32278 Element 6057799 or 4144299 ×1
  • Technic Beam 1 x 3 Thick Blue Part 32523 Element 4509376 or 4144284 ×2
  • Technic Beam 1 x 3 Thin Blue Part 6632 Element 6344176 or 4107829 ×8
  • Technic Beam 1 x 4 Thin Blue Part 32449 Element 6488701 or 4144283 ×4
  • Technic Beam 1 x 4 Thin with Stud Connector Blue Part 2825 Element 4142061 or 3200623 ×4
  • Technic Beam 1 x 5 Thick Blue Part 32316 Element 4142134 or 4128591 ×2
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Blue Part 6629 Element 6279882 or 4182884 ×2
  • Technic Beam 1 x 9 Thick Blue Part 40490 Element 6115617 or 4239749 ×1
  • Technic Beam 3 x 3 L-Shape Thin Blue Part 32056 Element 6344048 or 6231880 ×4
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Blue Part 32250 Element 6371955 or 6339225 ×4
  • Technic Beam 1 x 15 Thick Dark Bluish Gray Part 32278 Element 32278199 or 4542576 ×2
  • Technic Beam 1 x 3 Thick Dark Bluish Gray Part 32523 Element 32523199 or 4210751 Also in Black ×1
  • Technic Beam 1 x 3 Thin Dark Bluish Gray Part 6632 Element 6632199 or 6364452 Also in Black ×13
  • Technic Beam 1 x 5 Thick Dark Bluish Gray Part 32316 Element 32316199 or 4210686 ×1
  • Technic Beam 1 x 5 Thin Dark Bluish Gray Part 32017 Element 32017199 or 6215176 ×1
  • Technic Beam 1 x 7 Bent (4 - 4) Thick Dark Bluish Gray Part 32348 Element 32348199 or 6278127 ×2
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Dark Bluish Gray Part 32250 Element 32250199 or 6327165 Also in Black ×2
  • Technic Beam 5 x 7 L-Shape with Quarter Ellipse Thin Dark Bluish Gray Part 32251 Element 32251199 or 6111179 Also in Black ×2
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Trans-Red Part 32271 Element 4175576 or 3227141 ×4
  • Technic Beam 1 x 2 Thin White Part 41677 Element 6371416 or 4163533 ×24
  • Technic Beam 1 x 9 Bent (6 - 4) Thick White Part 6629 Element 6279886 or 6063839 ×4
  • Technic Beam 1 x 3 Thin Yellow Part 6632 Element 6344174 or 4107823 ×1

Technic Pins 165 pieces

  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×4
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×24
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 ×74
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×4
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×36
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Blue Part 32054 Element 4140800 or 4107741 ×10
  • Technic Pin 3/4 Dark Bluish Gray Part 32002 Element 32002199 or 4211050 ×4
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×5
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Yellow Part 32054 Element 4140805 or 4121613 ×2

Technic Axles 152 pieces

  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×41
  • Technic Axle 4 Black Part 3705 Element 370526 ×23
  • Technic Axle 6 Black Part 3706 Element 370626 ×7
  • Technic Axle 8 Black Part 3707 Element 370726 ×2
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×16
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×35
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×15
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×12

Technic Connectors 130 pieces

  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Black Part 6553 Element 4107765 or 655326 ×9
  • Technic Axle Connector Ridged [with x Hole x Orientation] Black Part 6538b Element 4113805 or 4107083 Also in Dark Bluish Gray ×2
  • Technic Axle Connector with Axle Hole Black Part 32039 Element 4107081 or 3203926 ×2
  • Technic Axle and Pin Connector Angled #2 - 180° Black Part 32034 Element 6271869 or 4107783 Also in Dark Bluish Gray ×12
  • Technic Axle and Pin Connector Angled #4 - 135° Black Part 32192 Element 6262897 or 4121610 ×2
  • Technic Axle and Pin Connector Perpendicular Black Part 6536 Element 6261371 or 4173668 Also in Dark Bluish Gray ×12
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×2
  • Technic Pin Connector Perpendicular 2 x 2 Bent Black Part 44809 Element 6325982 or 4480926 Also in Dark Bluish Gray ×2
  • Technic Pin Connector Toggle Joint Smooth Double with 2 Pins Black Part 48496 Element 4849626 or 4238840 ×1
  • Technic Axle Connector Ridged [with x Hole x Orientation] Blue Part 6538b Element 4113807 or 4107802 ×10
  • Technic Axle Connector with Axle Hole Blue Part 32039 Element 6330996 or 4107801 ×6
  • Technic Axle and Pin Connector Angled #2 - 180° Blue Part 32034 Element 6484676 or 4107798 ×2
  • Technic Axle and Pin Connector Perpendicular Blue Part 6536 Element 6261383 or 6178359 ×2
  • Technic Pin Connector Round [No Slot] Blue Part 75535 Element 7553523 or 4143093 ×2
  • Technic Axle Connector Ridged [with x Hole x Orientation] Dark Bluish Gray Part 6538b Element 6538199 or 4210672 Also in Black ×4
  • Technic Axle and Pin Connector Angled #1 Dark Bluish Gray Part 32013 Element 32013199 or 6296856 ×6
  • Technic Axle and Pin Connector Angled #2 - 180° Dark Bluish Gray Part 32034 Element 32034199 or 6271876 Also in Black ×2
  • Technic Axle and Pin Connector Perpendicular Dark Bluish Gray Part 6536 Element 6536199 or 6261374 Also in Black ×18
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Dark Bluish Gray Part 32184 Element 32184199 or 6276984 ×1
  • Technic Pin Connector Perpendicular 2 x 2 Bent Dark Bluish Gray Part 44809 Element 44809199 or 4238844 Also in Black ×2
  • Technic Axle Connector Ridged [with x Hole x Orientation] Tan Part 6538b Element 4207456 or 4140453 ×10
  • Technic Axle and Pin Connector Perpendicular Double Split Tan Part 41678 Element 4238839 or 416785 ×2
  • Technic Axle and Pin Connector Perpendicular White Part 6536 Element 6261372 or 4173670 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole White Part 32184 Element 6276981 or 6114940 ×10
  • Technic Axle and Pin Connector Perpendicular Double White Part 32291 Element 6292916 or 6254266 ×1
  • Technic Pin Connector Perpendicular 2 x 2 Bent White Part 44809 Element 4227074 or 448091 ×2
  • Technic Axle Connector with Axle Hole Yellow Part 32039 Element 4107800 or 3203924 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Yellow Part 42003 Element 6273711 or 4200324 ×1
  • Technic Pin Connector Perpendicular 2 x 2 Bent Yellow Part 44809 Element 6331919 or 4480924 ×2

Technic Bushes 41 pieces

  • Technic Bush Black Part 3713 Element 6332148 or 6210506 1 spare in the box ×6
  • Technic Bush White Part 3713 Element 4207525 or 4198121 ×14
  • Technic Bush 1/2 Smooth with Axle Hole Reduced White Part 32123a Element 4203585 or 321231 ×15
  • Technic Bush Yellow Part 3713 Element 4238814 or 659024 2 spares in the box ×3
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Yellow Part 32123a Element 4239601 ×3

Technic Steering, Suspension and Engine 37 pieces

  • Technic Link 1 x 9 Black Part 32293 Element 6244698 or 4141300 ×1
  • Technic Steering Arm Small with Towball Black Part 6571 Element 4543367 or 4125370 ×2
  • Technic Engine Crankshaft Center Dark Bluish Gray Part 2854 Element 6007058 or 4210987 ×2
  • Technic Engine Cylinder with Side Slots Dark Bluish Gray Part 2850a Element 32061199 or 4238823 ×6
  • Technic Link 1 x 6 with Stoppers Dark Bluish Gray Part 32005b ×2
  • Technic Engine Connecting Rod Light Bluish Gray Part 2852 Element 6000018 or 4655728 ×6
  • Technic Engine Crankshaft Light Bluish Gray Part 2853 Element 6640384 or 4211609 ×2
  • Technic Universal Joint 4L [Complete Assembly] Light Bluish Gray Part 9244 Element 9244194 or 4240416 ×1
  • Technic Steering Arm 6.5 x 2 with Towball Socket Rounded, Chamfered White Part 32195b Element 4240011 or 321951 ×2
  • Technic Steering Knuckle Arm with Ball Joint White Part 6572 Element 6063776 or 4183315 ×4
  • Technic Steering Wheel Small (3 Studs Diameter) White Part 2819 Element 4160701 or 28191 ×1
  • Technic Engine Piston Round Yellow Part 2851 Element 4112203 or 285124 ×6
  • Technic Shock Absorber 6.5L with Hard Spring, Tight Coil in Middle [Complete Assembly] Yellow Part 76537 Element 7653726 or 6027566 ×2

Technic Gears 20 pieces

  • Technic Gear 16 Tooth with Clutch [Toothed] Dark Bluish Gray Part 6542a ×1
  • Technic Gear Differential, 24 -16 Tooth with Clutch on Both Sides Dark Bluish Gray Part 6573 Element 6573199 or 4211023 ×1
  • Technic Knob Wheel Dark Bluish Gray Part 32072 Element 32072199 or 4210854 ×2
  • Technic Gear 12 Tooth Bevel Light Bluish Gray Part 6589 Element 6589194 or 4565450 ×5
  • Technic Gear 12 Tooth Double Bevel Light Bluish Gray Part 32270 Element 32270194 or 4211634 ×6
  • Technic Gear 16 Tooth with Round Holes [Old Style] Light Bluish Gray Part 4019 Element 4562487 or 4211563 ×2
  • Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening] Light Bluish Gray Part 32269 Element 32269194 or 4211635 ×1
  • Technic Gear 8 Tooth Light Bluish Gray Part 3647 Element 4211432 or 3647194 ×1
  • Technic Gear Rack 1 x 2 with Ball Joints Light Bluish Gray Part 6574 Element 6574194 or 4237252 ×1

Wheels and Tyres 14 pieces

  • Technic Wedge Belt Wheel [aka Pulley] Black Part 4185 Element 6323668 or 6192130 ×4
  • Tyre 68.8 x 36 H Black Part 41893 Element 4192762 or 4189326 ×4
  • Wheel Balloon with Axle hole Black Part 4288 Element 4113076 or 428876 ×1
  • Wheel 43.2 x 26 Technic Racing Small with 3 Pinholes White Part 41896 Element 4498353 or 4238865 ×4
  • Wheel Spoked 2 x 2 with Pin Hole White Part 30155 Element 4240038 or 301551 ×1

Technic Bricks 12 pieces

  • Technic Brick 1 x 2 with Axle Hole Type 1 [+ Opening] and Bottom Pin Blue Part 32064a Element 6206251 or 6132158 ×8
  • Technic Brick 1 x 8 [7 Pin Holes] Blue Part 3702 Element 370223 ×2
  • Technic Brick 1 x 1 with Pin Hole White Part 6541 Element 6609542 or 654101 ×1
  • Technic Brick 1 x 2 [2 Pin Holes] White Part 32000 Element 6564911 or 3200001 ×1

Technic Beams Special 6 pieces

  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Tan Part 33299a Element 4240082 or 4143450 ×6

Tiles 4 pieces

  • Tile 1 x 2 with Groove Trans-Yellow Part 3069b Element 6514221 or 6251291 ×4

Tiles Special 4 pieces

  • Tile Special 1 x 2 Grille with Bottom Groove Trans-Orange Part 2412b Element 30244182 or 6097654 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove Trans-Red Part 2412b Element 6250158 or 4190187 ×2

Plates 3 pieces

  • Plate 2 x 3 Blue Part 3021 Element 302123 ×2
  • Plate 1 x 3 Light Bluish Gray Part 3623 Element 4211429 or 3623194 ×1

String, Bands and Reels 3 pieces

  • String Cord Thin (0.5mm) 200cm Black Part 56823c200 Element 4276325 or 71162 ×1
  • Technic Reel 3 x 2 Dark Bluish Gray Part 32012 Element 32012199 or 4239891 ×2

Large Buildable Figures 2 pieces

  • Large Figure Shield Holder with Technic Axle Blue Part 47474 Element 4747423 or 4244158 ×2

Supports, Girders and Cranes 2 pieces

  • Hook with Towball Dark Bluish Gray Part 30395 Element 30395199 or 6347464 ×2

Technic Special 2 pieces

  • Technic Cam Dark Bluish Gray Part 6575 Element 6575199 or 4210759 ×2

Transportation - Sea and Air 1 piece

  • Propeller 3 Blade 3 Diameter with Axle Cross Red Part 6041 Element 6173893 or 4163288 ×1

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

When a piece really is missing

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