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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.

Monster Dino

Checking

4958 Monster Dino

792 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.

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Piece checklist

Black 281 pieces

  • Brick 1 x 2 Black Part 3004 Element 300426 ×11
  • Brick Curved 3 x 1 No Studs Black Part 50950 Element 4251161 ×10
  • Brick Curved 6 x 1 Black Part 42022 Element 4160393 ×2
  • Brick Curved 6 x 2 Black Part 44126 Element 4180548 ×2
  • Brick Round 4 x 4 with 4 Side Pin Holes and Center Axle Hole Black Part 6222 Element 6533083 or 4290056 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 ×18
  • Brick Sloped 33° 3 x 1 Black Part 4286 Element 428626 ×12
  • Brick Sloped 45° 2 x 1 with Bottom Pin Black Part 3040b Element 4121966 or 304026 ×6
  • Brick Wedged, Angled 4 x 2 Left Black Part 41768 Element 6078889 or 4644755 ×1
  • Brick Wedged, Angled 4 x 2 Right Black Part 41767 Element 6078886 or 4644754 ×1
  • Brick Wedged, Curved 6 x 2 Left, Inner Ridges Black Part 41748 Element 4160130 ×4
  • Brick Wedged, Curved 6 x 2 Right, Inner Ridges Black Part 41747 Element 4160108 ×4
  • Hinge Cylinder 1 x 2 Locking with 2 Click Fingers and Axle Hole, 9 Teeth Black Part 30553 Element 4143372 ×9
  • Hinge Cylinder 1 x 3 Locking with 1 Finger and Technic Friction Pin with Round Hole Black Part 41532 Element 4159335 ×1
  • Plate 1 x 3 Black Part 3623 Element 362326 ×13
  • Plate 1 x 8 Black Part 3460 Element 346026 ×10
  • Plate 2 x 3 Black Part 3021 Element 302126 ×5
  • Plate Special 1 x 2 [Side Handle Closed Ends] Black Part 48336 Element 4225201 ×2
  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 4 Black Part 3705 Element 370526 ×9
  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle 8 Black Part 3707 Element 370726 ×2
  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×4
  • Technic Beam 1 x 13 Thick Black Part 41239 Element 4522933 or 4164422 ×2
  • Technic Beam 1 x 6 Thin Black Part 32063 Element 6163980 or 4114634 ×6
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×11
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Black Part 32271 Element 6276835 or 4140327 ×2
  • Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin Black Part 32250 Element 6327162 or 4128557 ×6
  • Technic Beam 5 x 7 L-Shape with Quarter Ellipse Thin Black Part 32251 Element 4240081 or 4141517 ×2
  • Technic Brick 1 x 10 [9 Pin Holes] Black Part 2730 Element 273026 ×4
  • Technic Brick 1 x 6 [5 Pin Holes] Black Part 3894 Element 389426 ×8
  • Technic Gear 36 Tooth Double Bevel Black Part 32498 Element 4255563 or 4177434 ×2
  • Technic Pin Connector Perpendicular Long Black Part 32557 Element 4143466 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×46
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×32
  • Technic Plate 2 x 6 [5 Holes] Black Part 32001 Element 3200126 ×1
  • Technic Wedge Belt Wheel Tire Black Part 2815 Element 6028041 or 281526 ×2
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×9
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×4
  • Wedge Plate 3 x 2 Left Black Part 43723 Element 4180536 ×4
  • Wedge Plate 3 x 2 Right Black Part 43722 Element 4180508 ×4
  • Wedge Plate 3 x 3 Cut Corner Black Part 2450 Element 4227684 or 245026 ×2
  • Wheel 30.4 x 14 Solid Smooth Black Part 32146 Element 4288814 or 4120425 ×2

Light Bluish Gray 133 pieces

  • Battery Box, Power Functions 4 x 11 x 7 with Orange Switch and Dark Bluish Gray Covers [Complete Assembly] Light Bluish Gray Part 58119 Element 4506078 ×1
  • Brick Curved Inverted 6 x 1 Light Bluish Gray Part 42023 Element 6132260 or 4211731 ×2
  • Brick Sloped Inverted 34° 3 x 1 with Internal Stopper Light Bluish Gray Part 4287b ×10
  • Brick Special 1 x 4 with 4 Studs on One Side Light Bluish Gray Part 30414 Element 4211636 ×4
  • Brick Wedged, Curved Inverted 6 x 2 Left Light Bluish Gray Part 41765 Element 4260934 ×5
  • Brick Wedged, Curved Inverted 6 x 2 Right Light Bluish Gray Part 41764 Element 4260935 ×5
  • Control Unit, IR, Power Functions, with Dark Bluish Gray Bottom Light Bluish Gray Part 58122 Element 6225576 or 6074396 ×1
  • Motor, Medium, Power Functions, 3 x 6 x 3 with Dark Bluish Gray Bottom and 20cm Wire Light Bluish Gray Part 58120 Element 6209881 or 6151440 ×1
  • Motor, XL, Power Functions, 6 x 5 x 6, 20cm with Dark Bluish Gray Bottom Light Bluish Gray Part 58121 Element 6102930 or 6073386 ×1
  • Plate 1 x 10 Light Bluish Gray Part 4477 Element 4251149 or 4211495 ×4
  • Plate 1 x 6 Light Bluish Gray Part 3666 Element 4211438 ×10
  • Receiver Unit, IR, Power Functions Light Bluish Gray Part 58123a Element 6194861 or 6132634 ×1
  • Sound Brick 2 x 4 x 2 Light Bluish Gray Top with Dinosaur Roar Sound Light Bluish Gray Part 55206c02 Element 4510216 ×1
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×9
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×1
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×2
  • Technic Axle and Pin Connector Angled #1 Light Bluish Gray Part 32013 Element 6296859 or 4211550 ×8
  • Technic Beam 1 x 11 Thick Light Bluish Gray Part 32525 Element 4611705 or 4534910 ×9
  • Technic Beam 1 x 4 Thin Light Bluish Gray Part 32449 Element 6370947 or 6074036 ×4
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Light Bluish Gray Part 6629 Element 6279885 or 4255613 ×2
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Light Bluish Gray Part 33299a Element 4211688 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Light Bluish Gray Part 3700 Element 4211440 ×4
  • Technic Brick 1 x 8 [7 Pin Holes] Light Bluish Gray Part 3702 Element 4211442 ×8
  • Technic Gear 12 Tooth Double Bevel Light Bluish Gray Part 32270 Element 32270194 or 4211634 ×4
  • Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening] Light Bluish Gray Part 32269 Element 32269194 or 4211635 ×2
  • Technic Gear 24 Tooth [New Style with Single Axle Hole] Light Bluish Gray Part 3648b Element 4211565 ×4
  • Technic Gear 8 Tooth Light Bluish Gray Part 3647 Element 4211432 or 3647194 ×1
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins Light Bluish Gray Part 48989 Element 4225033 ×1
  • Technic Pin Long without Friction Ridges - Single Slot Light Bluish Gray Part 32556a Element 4211709 ×8
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×15
  • Technic Wedge Belt Wheel [aka Pulley] Light Bluish Gray Part 4185 Element 6321743 or 4494222 ×2
  • Technic Worm Gear Light Bluish Gray Part 4716 Element 4211510 ×1

Dark Bluish Gray 125 pieces

  • Bracket 1 x 2 - 2 x 2 Dark Bluish Gray Part 44728 Element 6117972 or 6048854 ×4
  • Brick 1 x 1 Dark Bluish Gray Part 3005 Element 4211098 ×8
  • Hinge Plate 1 x 4 Swivel Top / Base - Solid Clip [Complete Assembly] Dark Bluish Gray Part 73983 Element 6102774 or 4271344 ×2
  • Hinge Plate 2 x 4 with Articulated Joint - Female Dark Bluish Gray Part 3640 Element 4265486 or 4237555 ×2
  • Hinge Plate 2 x 4 with Articulated Joint - Male Dark Bluish Gray Part 3639 Element 4264952 or 4237553 ×2
  • Plate 1 x 2 Dark Bluish Gray Part 3023 Element 4211063 ×24
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×14
  • Plate 2 x 2 Dark Bluish Gray Part 3022 Element 4211094 ×4
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Dark Bluish Gray Part 2654 Element 4613980 or 4278274 ×4
  • Technic Axle 3 with Stud Dark Bluish Gray Part 6587 Element 6587199 or 6129590 ×2
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×2
  • Technic Beam 1 x 2 with Ball Joint Angled Dark Bluish Gray Part 50923 Element 4503381 or 4289258 ×2
  • Technic Beam 1 x 5 Thick Dark Bluish Gray Part 32316 Element 32316199 or 4210686 ×6
  • Technic Beam 1 x 9 Thick Dark Bluish Gray Part 40490 Element 4645730 or 4210757 ×3
  • Technic Brick 1 x 12 [11 Pin Holes] Dark Bluish Gray Part 3895 Element 4210963 ×2
  • Technic Brick 1 x 2 [2 Pin Holes] Dark Bluish Gray Part 32000 Element 4210762 ×2
  • Technic Brick 1 x 4 [3 Pin Holes] Dark Bluish Gray Part 3701 Element 4213607 or 370127 ×10
  • Technic Brick Special 2 x 2 with Ball Socket and Axle Hole Dark Bluish Gray Part 57910 ×2
  • Technic Cam Dark Bluish Gray Part 6575 Element 6575199 or 4210759 ×4
  • Technic Pin 3/4 Dark Bluish Gray Part 32002 Element 32002199 or 4211050 1 spare in the box ×10
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Dark Bluish Gray Part 32530 Element 4210763 ×4
  • Technic Slope Short (Wing Front) Dark Bluish Gray Part 2743 Element 4273814 ×8
  • Wedge Plate 4 x 2 Left Dark Bluish Gray Part 41770 Element 4210788 ×2
  • Wedge Plate 4 x 2 Right Dark Bluish Gray Part 41769 Element 4210782 ×2

Red 70 pieces

  • Bracket 1 x 2 - 1 x 4 [Square Corners] Red Part 2436 Element 4282742 or 243621 ×7
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×3
  • Plate 2 x 4 Red Part 3020 Element 302021 ×5
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Red Part 4032a Element 403221 ×3
  • Plate Special 1 x 1 with Clip Horizontal [Thick U Clip] Red Part 6019 Element 601971 or 601921 ×4
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 1 spare in the box ×14
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Red Part 32184 Element 6276963 or 4128598 ×4
  • Technic Beam 1 x 2 Thin Red Part 41677 Element 6371442 or 4186678 ×12
  • Technic Beam 1 x 7 Thin Red Part 32065 Element 6613783 or 6349634 ×2
  • Technic Beam 1 x 9 Thick Red Part 40490 Element 4645733 or 4192225 ×2
  • Technic Beam 2 x 4 L-Shape Thick Red Part 32140 Element 6271827 or 4141270 ×1
  • Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin Red Part 32249 Element 6403900 or 4566064 ×4
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×5
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Red Part 32054 Element 4140806 or 4125198 ×4

Lime 63 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Lime Part 54200 Element 4504372 or 4298015 ×19
  • Plate Round 1 x 1 with Solid Stud Lime Part 6141 Element 4183133 1 spare in the box ×24
  • Technic Beam 1 x 2 Thick Lime Part 43857 Element 6149993 or 4263119 ×4
  • Technic Beam 1 x 3 Thin Lime Part 6632 Element 6364449 or 6149985 ×10
  • Technic Beam 1 x 7 Bent (4 - 4) Thick Lime Part 32348 Element 6082985 or 4265696 ×2
  • Technic Beam 3 x 5 L-Shape Thick Lime Part 32526 Element 6286222 or 6170475 ×4

White 54 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 ×6
  • Plate Special 1 x 1 with Tooth White Part 49668 Element 6601935 or 4224792 ×26
  • Technic Beam 1 x 3 Thick White Part 32523 Element 6632140 or 4208160 ×11
  • Technic Brick 1 x 1 with Pin Hole White Part 6541 Element 6609542 or 654101 ×4
  • Technic Pin Connector Round [No Slot] White Part 75535 Element 75535 ×1
  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] White Part 41669 Element 4173941 ×6

Blue 23 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 1 spare in the box ×23

Tan 14 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 1 spare in the box ×14

Green 10 pieces

  • Hinge Plate 1 x 2 Locking with 1 Finger On Top Green Part 30383 Element 4561793 or 4183128 ×6
  • Plate 2 x 2 Corner Green Part 2420 Element 4157120 or 242028 ×4

Glow In Dark Trans 9 pieces

  • Animal Body Part / Plant, Tail / Claw / Horn / Branch / Tentacle, End Section Glow In Dark Trans Part 40379 Element 4508461 or 4297137 ×9

Yellow 8 pieces

  • Hinge Plate 1 x 2 Locking with 1 Finger on Side, with Groove Yellow Part 44567a Element 4185617 ×2
  • Technic Axle Connector Ridged [with x Hole x Orientation] Yellow Part 6538b Element 4140507 ×1
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Yellow Part 42003 Element 6273711 or 4200324 ×1
  • Technic Axle and Pin Connector Perpendicular Double Split Yellow Part 41678 Element 4187125 ×2
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×2

Trans-Neon Green 2 pieces

  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Trans-Neon Green Part 41669 Element 4163577 ×2

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.

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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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