BlockTalk Find Your Set

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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.

Maximum Wheels

Checking

4100 Maximum Wheels

293 pieces in 132 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.

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Piece checklist

Red 125 pieces

  • Brick 1 x 1 Red Part 3005 Element 300521 ×2
  • Brick 1 x 2 Red Part 3004 Element 4613961 or 300421 ×6
  • Brick 1 x 3 Red Part 3622 Element 362221 ×4
  • Brick 1 x 4 Red Part 3010 Element 301021 ×8
  • Brick 1 x 6 Red Part 3009 Element 300921 ×5
  • Brick 2 x 10 Red Part 3006 Element 4617857 or 300621 ×1
  • Brick 2 x 2 Red Part 3003 Element 4103590 or 300371 ×1
  • Brick 2 x 4 Red Part 3001 Element 300121 ×3
  • Brick 2 x 6 Red Part 2456 Element 4181138 or 245621 ×2
  • Brick Curved 2 x 3 Red Part 6215 Element 621521 ×1
  • Brick Curved Inverted 6 x 1 Red Part 42023 Element 4160406 ×2
  • Brick Sloped 18° 4 x 2 Red Part 30363 Element 4129539 ×1
  • Brick Sloped 33° 3 x 1 Red Part 4286 Element 428621 ×4
  • Brick Sloped 45° 2 x 1 with Bottom Pin Red Part 3040b Element 4121934 or 304021 ×2
  • Brick Sloped 45° 2 x 2 Red Part 3039 Element 303921 ×2
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Red Part 3747a Element 374721 ×2
  • Brick Sloped Inverted 34° 3 x 1 without Internal Stopper Red Part 4287a ×2
  • Brick Sloped Inverted 45° 2 x 1 Red Part 3665 Element 366521 ×6
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Red Part 3660 Element 366021 ×5
  • Brick Special 1 x 2 with Grille Red Part 2877 Element 6219677 or 287721 ×1
  • Brick Wedged, Angled 3 x 2 Left Red Part 6565 Element 6256588 or 4527765 ×1
  • Brick Wedged, Angled 3 x 2 Right Red Part 6564 Element 6256585 or 4526929 ×1
  • Brick Wedged, Angled 4 x 2 Left Red Part 41768 Element 6449915 or 6093580 ×1
  • Brick Wedged, Angled 4 x 2 Right Red Part 41767 Element 6449914 or 6093579 ×1
  • Brick Wedged, Sloped 4 x 2 Triple Left Red Part 43710 Element 6431121 or 6293751 ×1
  • Brick Wedged, Sloped 4 x 2 Triple Right Red Part 43711 Element 6431123 or 6293750 ×1
  • Brick Wedged, Sloped 45° 4 x 2 Left Red Part 43721 Element 6105970 or 4530012 ×2
  • Brick Wedged, Sloped 45° 4 x 2 Right Red Part 43720 Element 6105969 or 4530011 ×2
  • Hinge Brick 1 x 2 Base Red Part 3937 Element 393721 ×2
  • Hinge Brick 1 x 6 Locking with 1 Finger Vertical End and 2 Fingers Vertical End, 9 Teeth Red Part 30388 Element 4187380 ×2
  • Hinge Brick 2 x 2 Locking with 1 Finger Vertical and Axle Hole [X Opening] Red Part 30389c ×1
  • Plate 1 x 1 Red Part 3024 Element 302421 ×4
  • Plate 1 x 2 Red Part 3023 Element 302321 ×4
  • Plate 1 x 3 Red Part 3623 Element 362321 ×4
  • Plate 1 x 4 Red Part 3710 Element 371021 ×4
  • Plate 1 x 6 Red Part 3666 Element 366621 ×2
  • Plate 2 x 10 Red Part 3832 Element 383221 ×2
  • Plate 2 x 2 Corner Red Part 2420 Element 242071 or 242021 ×2
  • Plate 2 x 3 Red Part 3021 Element 302121 ×5
  • Plate 2 x 4 Red Part 3020 Element 302021 ×3
  • Plate 2 x 6 Red Part 3795 Element 379521 ×3
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 1 spare in the box Also in Trans-Red ×2
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Red Part 4081b Element 6281994 or 4632572 ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Red Part 3794a ×2
  • Tile 1 x 4 with Groove Red Part 2431 Element 243121 ×2
  • Tile 2 x 2 with Groove Red Part 3068b Element 306821 ×1
  • Turntable 2 x 2 Plate, Base Red Part 3680 Element 368021 ×2
  • Wedge Plate 3 x 2 Left Red Part 43723 Element 4372321 or 4180533 ×1
  • Wedge Plate 3 x 2 Right Red Part 43722 Element 4372221 or 4180504 ×1
  • Wedge Plate 3 x 6 Cut Corners Red Part 2419 Element 241921 ×1
  • Wedge Plate 4 x 2 Left Red Part 41770 Element 4161329 ×1
  • Wedge Plate 4 x 2 Right Red Part 41769 Element 4160866 ×1
  • Wedge Plate 4 x 4 with 2 x 2 Cutout Red Part 43719 Element 6275399 or 4561034 ×1

Light Gray 37 pieces

  • Brick Special 1 x 1 Studs on 4 Sides Light Gray Part 4733 Element 473302 ×2
  • Plate 1 x 10 Light Gray Part 4477 Element 447702 ×2
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×4
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×5
  • Plate 1 x 8 Light Gray Part 3460 Element 346002 ×2
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×1
  • Plate 2 x 8 Light Gray Part 3034 Element 303402 ×1
  • Plate Round 1 x 1 with Solid Stud Light Gray Part 6141 Element 614102 1 spare in the box ×4
  • Plate Special 2 x 4 with Pins Light Gray Part 30157 Element 4141982 ×2
  • Technic Pin 1/2 without Friction Ridges Light Gray Part 4274 Element 427402 1 spare in the box ×2
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×6
  • Tile Special 1 x 2 Grille with Bottom Groove Light Gray Part 2412b Element 241202 ×2
  • Tile Special 1 x 2 with Handle Light Gray Part 2432 Element 243202 ×2
  • Turntable 2 x 2 Plate - Top Light Gray Part 3679 Element 367952 or 367902 ×2

White 37 pieces

  • Brick Curved 6 x 2 White Part 44126 Element 6619299 or 4179870 ×1
  • Brick Sloped 33° 3 x 1 White Part 4286 Element 6632142 or 428601 ×2
  • Brick Sloped 33° 3 x 2 White Part 3298 Element 329801 ×1
  • Brick Wedged, Sloped 4 x 2 Triple Left White Part 43710 Element 6552155 or 6106685 ×1
  • Brick Wedged, Sloped 4 x 2 Triple Right White Part 43711 Element 6552154 or 6106683 ×1
  • Hinge Brick 2 x 2 Top Plate Thin White Part 6134 Element 6548272 or 4612342 ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 Also in Trans-Clear ×4
  • Plate 2 x 2 White Part 3022 Element 6552099 or 6548260 ×1
  • Plate 2 x 3 White Part 3021 Element 6550136 or 302101 ×1
  • Plate 2 x 4 White Part 3020 Element 6552098 or 302001 ×2
  • Plate 2 x 6 White Part 3795 Element 6550146 or 379501 ×1
  • Plate Round 1 x 1 with Solid Stud White Part 6141 Element 6601919 or 614101 1 spare in the box Also in Trans-Clear ×2
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) White Part 3794a ×1
  • Tail Shuttle - Small White Part 44661 Element 6253365 or 4288960 ×1
  • Tile 1 x 4 with Groove White Part 2431 Element 6548255 or 243101 ×2
  • Tile Special 1 x 2 Grille with Bottom Groove White Part 2412b Element 6601902 or 241201 ×4
  • Wheel 18 x 14 with Tread Small Hub White Part 30285 Element 4116774 ×10

Black 36 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×2
  • Brick 1 x 2 Black Part 3004 Element 300426 ×1
  • Brick 2 x 4 Black Part 3001 Element 300126 ×2
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×1
  • Brick Sloped 2 x 2 No Studs, with 3 Side Pistons Raised Edges Black Part 30603 Element 4163524 ×1
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Black Part 3660 Element 366026 ×1
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×2
  • Cone 1 x 1 [No Top Groove] Black Part 4589 Element 4518219 or 458926 ×1
  • Hinge 1 x 2 Locking with 2 Fingers and Towball Socket, 9 Teeth Black Part 30396 Element 4144567 or 4143351 ×1
  • Plate 1 x 1 Black Part 3024 Element 302426 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 1 x 4 Black Part 3710 Element 371026 ×2
  • Plate Round 1 x 1 with Solid Stud Black Part 6141 Element 614126 1 spare in the box ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×1
  • Plate Special 2 x 2 with Towball Black Part 3729 Element 4124111 or 4107856 ×1
  • Plate Special 2 x 2 with Towball Socket, Short, 4 Slots Black Part 3730 Element 373026 ×1
  • Plate Special 3 x 2 with Rounded End, Hole Black Part 3176 Element 317676 or 317626 ×1
  • Technic Brick 1 x 8 [7 Pin Holes] Black Part 3702 Element 370226 ×2
  • Tyre 24 x 14 Shallow Tread (Tread Small Hub) Black Part 30648 Element 4524358 or 4153005 ×4
  • Tyre 30.4 x 14 Offset Tread Black Part 30391 Element 4140670 or 3039126 ×6

Dark Gray 35 pieces

  • Brick 1 x 3 Dark Gray Part 3622 Element 4114313 or 362227 ×2
  • Brick 1 x 4 Dark Gray Part 3010 Element 4114308 or 301027 ×2
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] Dark Gray Part 3684 Element 4248066 or 4142927 ×1
  • Brick Special 1 x 1 with Headlight Dark Gray Part 4070 Element 4108044 or 407027 ×2
  • Brick Special 1 x 2 with Grille Dark Gray Part 2877 Element 4124092 or 287727 ×2
  • Brick Special 1 x 2 with Pin Dark Gray Part 2458 Element 4113907 or 245827 ×2
  • Brick Special 1 x 4 with 4 Studs on One Side Dark Gray Part 30414 Element 4144532 ×3
  • Brick Special 2 x 4 with Pins Dark Gray Part 6249 Element 4143669 or 4100411 ×3
  • Hook with Towball Dark Gray Part 30395 Element 4140702 ×1
  • Plate 1 x 2 Dark Gray Part 3023 Element 4111983 or 302327 ×1
  • Plate 1 x 4 Dark Gray Part 3710 Element 371027 ×1
  • Plate 2 x 10 Dark Gray Part 3832 Element 4141769 or 383227 ×2
  • Plate 2 x 12 Dark Gray Part 2445 Element 4112847 or 4112526 ×2
  • Plate 2 x 16 Dark Gray Part 4282 Element 4162484 ×2
  • Plate 2 x 3 Dark Gray Part 3021 Element 4108041 or 302127 ×2
  • Plate 2 x 4 Dark Gray Part 3020 Element 4112232 or 302027 ×1
  • Plate 2 x 6 Dark Gray Part 3795 Element 379527 ×1
  • Plate 4 x 4 Dark Gray Part 3031 Element 4243823 or 4113911 ×1
  • Plate 6 x 10 Dark Gray Part 3033 Element 4116651 ×2
  • Plate Special 2 x 2 with Grills Dark Gray Part 41862 Element 4163164 ×2

Trans-Clear 9 pieces

  • Plate 1 x 1 Trans-Clear Part 3024 Element 6513962 or 6252041 ×2
  • Plate 1 x 2 Trans-Clear Part 3023 Element 6514001 or 6240204 Also in White ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare in the box Also in White ×2
  • Windscreen 2 x 4 x 2 Trans-Clear Part 3823 Element 6581801 or 6253681 ×2
  • Windscreen 4 x 4 x 1 Trans-Clear Part 6238 Element 4188129 or 4140007 ×1

Trans-Red 6 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box Also in Red ×6

Trans-Yellow 4 pieces

  • Plate 1 x 1 Trans-Yellow Part 3024 Element 6513966 or 6252045 ×4

Yellow 4 pieces

  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×4

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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