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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.

The Riddler Riddle Racer

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70903 The Riddler Riddle Racer

226 pieces in 97 part and color combinations, plus 5 minifigures.

The official piece count includes the 28 parts inside the set's minifigures, which this inventory lists separately. 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.

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Piece checklist

Plates 62 pieces

  • Plate 1 x 3 Black Part 3623 Element 362326 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Plate 6 x 16 Black Part 3027 Element 302726 ×1
  • Plate 1 x 4 Dark Bluish Gray Part 3710 Element 4211001 ×6
  • Plate 1 x 2 Dark Green Part 3023 Element 6618076 or 6013797 ×2
  • Plate 1 x 2 Green Part 3023 Element 302328 ×2
  • Plate 1 x 3 Green Part 3623 Element 4107758 or 362328 ×4
  • Plate 2 x 2 Corner Green Part 2420 Element 4157120 or 242028 ×2
  • Plate 1 x 8 Light Bluish Gray Part 3460 Element 4211425 ×6
  • Plate 2 x 2 Corner Red Part 2420 Element 242071 or 242021 ×2
  • Plate 2 x 4 Red Part 3020 Element 302021 ×1
  • Plate 2 x 3 Reddish Brown Part 3021 Element 4211189 ×4
  • Plate 1 x 2 Tan Part 3023 Element 4113917 or 302305 ×4
  • Plate 1 x 1 Trans-Orange Part 3024 Element 6513961 or 6252040 ×2
  • Plate 1 x 2 Trans-Red Part 3023 Element 6514003 or 6240212 ×2
  • Plate 1 x 2 White Part 3023 Element 6552100 or 6548261 ×10
  • Plate 1 x 4 White Part 3710 Element 6552108 or 6548266 ×3
  • Plate 1 x 6 White Part 3666 Element 6552107 or 6548265 ×2
  • Plate 1 x 8 White Part 3460 Element 6550141 or 346001 ×2
  • Plate 2 x 2 Corner White Part 2420 Element 6548254 or 242051 ×2
  • Plate 4 x 8 White Part 3035 Element 6609533 or 303501 ×1
  • Plate 2 x 2 Yellow Part 3022 Element 4613978 or 302224 ×1

Bricks Curved 28 pieces

  • Brick Curved 2 x 4 x 1 1/3 Dark Bluish Gray Part 6081 Element 4210968 ×2
  • Brick Curved 2 x 1 No Studs [1/2 Bow] Dark Green Part 11477 Element 6618099 or 6055225 ×2
  • Brick Curved 2 x 2 x 2/3 Dark Green Part 15068 Element 6618100 or 6101285 ×1
  • Brick Curved Inverted 2 x 1 Dark Green Part 24201 Element 6170761 ×4
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] Green Part 11153 Element 6578747 or 6042951 ×8
  • Brick Curved 2 x 2 x 2/3 Tan Part 15068 Element 6046924 ×3
  • Brick Curved 3 x 1 No Studs White Part 50950 Element 6548268 or 4249112 ×2
  • Brick Curved 4 x 1 No Studs [Stud Holder with Symmetric Ridges] White Part 11153 Element 6578744 or 6564905 ×6

Plates Special 23 pieces

  • Bracket 1 x 2 - 1 x 2 Inverted Dark Bluish Gray Part 99780 Element 6000606 ×5
  • Plate Special 1 x 2 with Clip Horizontal on End Dark Bluish Gray Part 63868 Element 6336990 or 4581225 ×2
  • Plate Special 4 x 4 with Clips Horizontal (thick open O clips) Dark Bluish Gray Part 11399 Element 6039699 or 6006386 ×1
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Dark Green Part 60478 Element 6130035 ×2
  • Plate Special 1 x 4 with Angled Tubes Flat Silver Part 61072 Element 4632100 ×1
  • Bracket 1 x 2 - 1 x 2 Inverted Green Part 99780 Element 6099243 ×2
  • Plate Special 1 x 1 with Clip Horizontal [Thick Open O Clip] Light Bluish Gray Part 61252 Element 6335378 or 4541978 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Light Bluish Gray Part 60470b Element 6337268 or 4556157 ×2
  • Plate Special 1 x 2 with Handles on Ends Light Bluish Gray Part 18649 Element 6093058 ×1
  • Plate Special 2 x 2 x 2/3 with Two Studs On Side and Two Raised [Solid Anti-stud] Light Bluish Gray Part 99206 Element 4654577 ×2
  • Plate Special 1 x 2 with Clips Horizontal [Open O Clips] Red Part 60470b Element 6360036 or 4556153 ×1
  • Plate Special 1 x 2 with Handle on End [Closed Ends] Red Part 60478 Element 4515365 ×2

Bricks Sloped 18 pieces

  • Brick Sloped 45° 2 x 2 Black Part 3039 Element 303926 ×1
  • Brick Sloped 18° 2 x 1 x 2/3 with 4 Slots / Grate Dark Bluish Gray Part 61409 Element 4540386 or 4521185 ×2
  • Brick Sloped Inverted 45° 2 x 2 Double Convex Dark Green Part 3676 Element 6170762 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Dark Green Part 3660 Element 6055241 or 4529174 ×6
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Green Part 54200 Element 4546705 or 4503118 1 spare in the box ×2
  • Brick Sloped 30° 1 x 2 x 2/3 Red Part 85984 Element 4651524 ×1
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Trans-Orange Part 54200 Element 6245265 or 4244369 ×2
  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) White Part 54200 Element 6550179 or 4504369 1 spare in the box ×2

Tiles 8 pieces

  • Tile 1 x 2 with Groove Dark Bluish Gray Part 3069b Element 4211052 ×4
  • Tile 1 x 3 Dark Green Part 63864 Element 6618112 or 4650622 ×2
  • Tile 2 x 4 with Groove Tan Part 87079 Element 6122047 or 4610209 ×2

Tiles Round and Curved 8 pieces

  • Tile Round 1 x 1 Light Bluish Gray Part 98138 Element 6284071 or 4650260 1 spare in the box ×4
  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 1 spare in the box ×4

Wheels and Tyres 8 pieces

  • Tyre 24 x 14 Shallow Tread (Tread Small Hub), Band Around Center of Tread Black Part 89201 Element 6132299 or 4639695 ×4
  • Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes Light Bluish Gray Part 55982 Element 4490127 ×4

Technic Bricks 7 pieces

  • Technic Brick 1 x 4 [3 Pin Holes] Black Part 3701 Element 370126 ×4
  • Technic Brick 1 x 2 [2 Pin Holes] Light Bluish Gray Part 32000 Element 4211541 ×3

Plates Round Curved and Dishes 6 pieces

  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Dark Bluish Gray Part 2654 Element 4613980 or 4278274 ×2
  • Plate Round 1 x 1 with Solid Stud Trans-Yellow Part 6141 Element 6514056 or 6240216 1 spare in the box ×4

Technic Pins 6 pieces

  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×2
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×4

Tiles Special 6 pieces

  • Tile Special 1 x 2 with Sloped Walls AKA Money / Gold Bar [Ingot] Black Part 99563 Element 6156991 ×1
  • Tile Special Round 2 x 2 with Hole Dark Bluish Gray Part 15535 Element 6055313 ×1
  • Tile Special 2 x 3 with 2 Clips [Thick Open O Clips] Dark Green Part 30350b Element 6174412 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Tan Part 2412b Element 4124456 or 393305 ×1
  • Tile Special 1 x 1 with Clip with Rounded Edges White Part 15712 Element 6348055 or 6054551 ×2

Minifig Accessories 5 pieces

  • Equipment Cane Handle, Question Mark with Stud Holder (Riddler) Bright Green Part 27146 Element 6171878 ×1
  • Equipment Zip Line Handle Dark Bluish Gray Part 30229 Element 4211081 ×2
  • Equipment Dynamite Sticks Red Part 64728 Element 6270088 or 4538780 ×2

Projectiles / Launchers 5 pieces

  • Launcher, Brick Special 1 x 4 Spring Shooter with Light Bluish Gray Top Dark Bluish Gray Part 15400 Element 6324200 or 6048898 ×2
  • Projectile, Spring Shooter Ammunition 8L Bar Trans-Bright Green Part 15303 Element 6287551 or 6062599 ×3

Transportation - Land 5 pieces

  • Wheel Arch, Mudguard, 1 1/2 x 6 x 1 [Arch Extended] Green Part 62361 Element 6533768 or 6170764 ×4
  • Steering Stand 1 x 2 with Black Steering Wheel Light Bluish Gray Part 3829c01 Element 4226995 ×1

Hinges, Arms and Turntables 4 pieces

  • Hinge Brick 1 x 2 Base Green Part 3937 Element 6170765 or 4541232 ×2
  • Hinge Brick 1 x 2 Top Plate Thin Green Part 3938 Element 6170768 or 4279388 ×2

Minifig Shields, Weapons, & Tools 4 pieces

  • Weapon Batarang Black Part 98721 Element 4650620 1 spare in the box ×2
  • Weapon Lightsaber Hilt with Bottom Ring Light Bluish Gray Part 64567 Element 4581155 or 4539481 1 spare in the box ×2

Plates Wedged 4 pieces

  • Wedge Plate 3 x 2 Left Light Bluish Gray Part 43723 Element 4211794 ×1
  • Wedge Plate 3 x 2 Right Light Bluish Gray Part 43722 Element 4211791 ×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

Windows and Doors 4 pieces

  • Window 1 x 2 x 2 Flat Front Green Part 60592 Element 6382730 or 6170767 ×2
  • Glass for Window 1 x 2 x 2 Flat Trans-Yellow Part 60601 Element 6514140 or 6315923 ×2

Bars, Ladders and Fences 3 pieces

  • Bar 3L Light Bluish Gray Part 87994 Element 6093527 or 6064033 1 spare in the box ×2
  • Bar 4L (Lightsaber Blade / Wand) Pearl Gold Part 30374 Element 6147169 or 4600267 ×1

Bricks Special 3 pieces

  • Bracket 3 x 2 x 1 1/3 with Pin Bottom Dark Bluish Gray Part 18671 Element 6099909 ×2
  • Brick Special 1 x 2 with 2 Studs on 1 Side Red Part 11211 Element 6019155 ×1

Bricks 2 pieces

  • Brick 2 x 4 Black Part 3001 Element 300126 ×1
  • Brick 2 x 2 Blue Part 3003 Element 4103589 or 300373 ×1

Technic Connectors 2 pieces

  • Technic Pin Connector Round [Slotted] Light Bluish Gray Part 62462 Element 6173127 or 4526985 ×2

Windscreens and Fuselage 2 pieces

  • Windscreen 3 x 4 x 1 1/3 Large Glass Surface Trans-Brown Part 57783 Element 6507931 or 6247359 ×1
  • Windscreen 6 x 4 x 1 Curved Trans-Brown Part 18973 Element 6244777 or 6102582 ×1

Animal / Creature Accessories 1 piece

  • Equipment Rein with Bridle Flexible Dark Bluish Gray Part 86059 Element 6123909 or 4550316 ×1

Bricks Wedged 1 piece

  • Brick Wedged, Curved 3 x 4 x 2/3 Cutout Green Part 11291 Element 6179681 or 6170797 ×1

Stickers 1 piece

  • Sticker Sheet for Set 70903-1 [No Color/Any Color] Part 30713 Element 6177262 ×1

Minifigures 5 figures

  • Calendar Man Minifigure, checked as a whole figure ×1
  • The Riddler with Dark Green Hat Minifigure, checked as a whole figure ×1
  • Magpie Minifigure, checked as a whole figure ×1
  • Kite Man Minifigure, checked as a whole figure ×1
  • Batman, Black Suit, Black Cape and Cowl, Utility Belt (3626cpr9998 Head) Minifigure, checked as a whole figure ×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

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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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