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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.

Multi-Challenge Race Track

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8364 Multi-Challenge Race Track

608 pieces in 135 part and color combinations, plus 4 minifigures.

LEGO counts 623 pieces. This inventory comes from a separate parts catalog and lists 624, including the 16 parts inside the minifigures; 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.

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Piece checklist

Black 201 pieces

  • Antenna 1 x 4 with Rounded Top Black Part 3957a ×4
  • Brick 1 x 1 Black Part 3005 Element 300526 ×4
  • Brick Curved 2 x 2 with Lip, No Studs with Silver and Red with Circle Print Black Part 30602pr0025 Element 4195514 ×1
  • Brick Curved 6 x 1 Black Part 42022 Element 4160393 ×12
  • Brick Round 1 x 1 Open Stud Black Part 3062b Element 306226 ×4
  • Brick Sloped 2 x 2 No Studs, with 3 Side Pistons Raised Edges and Silver/Red/Yellow Flame Print Black Part 30603pr0013 Element 4195761 ×1
  • Brick Special 1 x 1 with Headlight Black Part 4070 Element 407026 ×9
  • Brick Special 1 x 2 Palisade [aka Log] Black Part 30136 Element 4644456 or 4519980 ×17
  • Mudguard 2 x 4 with 2 x 2 Studs and Flared Wings, Red/Silver Stripes Print (Set 8364) Black Part 41854pr0010 Element 4195521 ×1
  • Mudguard 2 x 4 with Molded Headlights Black Part 44674 Element 4298011 or 4186773 ×1
  • Plate 1 x 2 Black Part 3023 Element 302326 ×6
  • Plate 1 x 6 Black Part 3666 Element 366626 ×2
  • Plate 1 x 8 Black Part 3460 Element 346026 ×6
  • Plate 2 x 10 Black Part 3832 Element 383226 ×4
  • Plate 2 x 3 Black Part 3021 Element 302126 ×12
  • Plate 2 x 6 Black Part 3795 Element 379526 ×2
  • Plate 2 x 8 Black Part 3034 Element 303426 ×4
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Black Part 4081b Element 6281993 or 4632571 ×2
  • Plate Special 1 x 2 Side Handle [Free Ends] Black Part 2540 Element 4140588 or 254026 ×9
  • Plate Special 2 x 2 with Wheel Holders Black Part 4600 Element 460026 ×2
  • Technic Axle 10 Black Part 3737 Element 373726 ×1
  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×1
  • Technic Axle 6 Black Part 3706 Element 370626 ×1
  • Technic Axle and Pin Connector Angled #6 - 90° Black Part 32014 Element 6268905 or 4107767 ×3
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×2
  • Technic Beam 3 x 3 L-Shape Thin Black Part 32056 Element 6271810 or 4112287 ×1
  • Technic Link 1 x 9 Black Part 32293 Element 6244698 or 4141300 ×3
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×2
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Black Part 6558 Element 655826 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×63
  • Technic Pin with Friction Ridges Lengthwise and Towball Black Part 6628 Element 4184169 or 662826 ×1
  • Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×2
  • Tile 1 x 6 with Groove Black Part 6636 Element 663626 2 spares in the box ×8
  • Tyre 21 x 12 with Offset Tread Small Wide Black Part 6015 Element 601526 ×4
  • Wheel Small Wide Hard Plastic with Axle hole, Tread Black Part 41864 Element 4164007 ×4

Light Gray 97 pieces

  • Brick 2 x 2 Light Gray Part 3003 Element 4103591 or 300352 ×2
  • Brick 2 x 2 Corner Light Gray Part 2357 Element 235752 or 235702 ×2
  • Brick Sloped 75° 2 x 2 x 3 [Hollow Studs] Light Gray Part 3684 Element 4248057 or 4143978 ×4
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Bar-sized Stud Holes] Light Gray Part 3660 Element 366002 ×4
  • Brick Special 1 x 4 Palisade [aka Log] Light Gray Part 30137 Element 4190473 or 4110025 ×10
  • Brick Special 1 x 4 with 4 Studs on One Side Light Gray Part 30414 Element 4141467 ×2
  • Plate 1 x 1 Light Gray Part 3024 Element 302402 ×4
  • Plate 1 x 3 Light Gray Part 3623 Element 362302 ×4
  • Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Light Gray Part 2654 Element 265402 ×2
  • Technic Axle 3 Light Gray Part 4519 Element 4186007 ×6
  • Technic Axle 5 Light Gray Part 32073 Element 4141482 ×9
  • Technic Axle Towball Light Gray Part 2736 Element 273602 ×15
  • Technic Axle and Pin Connector Angled #4 - 135° Light Gray Part 32192 Element 4154762 ×2
  • Technic Beam 1 x 7 Thick Light Gray Part 32524 Element 4143020 ×3
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin / Crank Light Gray Part 33299a Element 4144142 ×8
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×6
  • Technic Brick 1 x 6 [5 Pin Holes] Light Gray Part 3894 Element 389402 ×4
  • Technic Bush 1/2 Smooth with Axle Hole Reduced Light Gray Part 32123a 1 spare in the box ×1
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 1 spare in the box ×6
  • Tile Special 1 x 1 with Clip and Straight Tips Light Gray Part 2555 Element 255502 ×3

Yellow 92 pieces

  • Cone 1 x 1 [No Top Groove] Yellow Part 4589 Element 458924 ×2
  • Hose Rigid 3mm D. 12L / 9.6cm Yellow Part 75c12 Element 4195781 ×2
  • Hose Rigid 3mm D. 40L / 32.0cm Yellow Part 75c40 Element 4195389 ×1
  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×21
  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 2 spares in the box ×16
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Yellow Part 4081b Element 6281992 or 4632569 ×2
  • Plate Special 1 x 2 with Door Rail Yellow Part 32028 Element 4141630 ×1
  • Road Sign Clip-on 2 x 2 Square Yellow Part 30258 Element 4116818 ×4
  • Technic Axle and Pin Connector Angled #1 Yellow Part 32013 Element 6329889 or 4107066 ×4
  • Technic Beam 1 x 11 Thick Yellow Part 32525 Element 6028107 or 4534912 ×2
  • Technic Beam 1 x 7 Bent (4 - 4) Thick Yellow Part 32348 Element 6278131 or 4500485 ×2
  • Technic Beam 3 x 3 L-Shape with Quarter Ellipse Thin Yellow Part 32249 Element 4500483 or 4157537 ×1
  • Technic Track System Gate 1 x 11 with End Tab and Three Holes Yellow Part 44775 Element 4194087 ×6
  • Tile 1 x 6 with Groove Yellow Part 6636 Element 6388488 or 663624 ×4
  • Tile 2 x 2 with Groove Yellow Part 3068b Element 6388487 or 306824 ×6
  • Tile Special 1 x 2 Grille with Bottom Groove Yellow Part 2412b Element 241224 ×16
  • Wheel 11 x 12 with Hole Notched for Wheels Holder Pin Yellow Part 6014b Element 4170460 ×2

Tan 65 pieces

  • Brick 1 x 1 Tan Part 3005 Element 4113915 or 300505 ×1
  • Brick 1 x 16 Tan Part 2465 Element 4295313 or 4165812 ×2
  • Brick 2 x 2 Tan Part 3003 Element 4114306 or 300305 ×36
  • Brick 2 x 2 Corner Tan Part 2357 Element 4124455 or 4112541 ×4
  • Brick 2 x 4 Tan Part 3001 Element 4114319 or 300105 ×3
  • Brick 2 x 6 Tan Part 2456 Element 4181134 or 4143256 ×1
  • Brick Sloped 45° 2 x 2 Tan Part 3039 Element 4114322 ×4
  • Plate 1 x 8 Tan Part 3460 Element 4114324 or 346005 ×2
  • Plate 2 x 2 Tan Part 3022 Element 4114084 or 302205 ×2
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Tan Part 4032a Element 4140562 or 403205 ×3
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×6
  • Technic Axle and Pin Connector Angled #5 - 112.5° Tan Part 32015 Element 4140564 ×1

Dark Gray 50 pieces

  • Battery Box, Track System, Energizer Track 16 x 15 x 2 Dark Gray Part 5313 Element 4195915 ×2
  • Brick 1 x 12 Dark Gray Part 6112 Element 4162487 ×2
  • Brick Sloped 45° 2 x 2 Dark Gray Part 3039 Element 4109984 ×1
  • Brick Special 2 x 2 with Pin and Axle Hole Dark Gray Part 6232 Element 4108048 ×8
  • Motor, Rechargeable 4 x 8 x 1 2/3 (Track System) Dark Gray Part 5313a Element 4195918 ×2
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Dark Gray Part 32530 Element 4157827 ×4
  • Tile 1 x 6 with Groove Dark Gray Part 6636 Element 4129575 or 4108155 ×6
  • Track System, Curved Track 17 x 12 x 2 Dark Gray Part 42938 Element 4171094 ×17
  • Track System, Ramp Track 16 x 8 x 6 Dark Gray Part 42942 Element 4171096 ×2
  • Track System, Y-shaped Track 18 x 16 x 2 Dark Gray Part 42941 Element 4194089 ×2
  • Track System, Y-shaped Track 24 x 16 x 2 Dark Gray Part 44773 Element 4194083 ×4

Red 49 pieces

  • Brick Round 2 x 2 with Axle Hole Red Part 3941 Element 614321 or 394121 ×2
  • Brick Special 1 x 1 with Handle Red Part 2921 Element 6170565 or 292121 ×4
  • Cone 1 x 1 [No Top Groove] Red Part 4589 Element 458921 ×2
  • Flag 4 x 1 Wavy [First Wave Left] Red Part 4495a ×2
  • Plate 1 x 4 Red Part 3710 Element 371021 ×3
  • Plate 2 x 2 Red Part 3022 Element 4613974 or 302221 ×11
  • Plate Round 1 x 1 with Solid Stud Red Part 6141 Element 614121 2 spares in the box Also in Trans-Red ×8
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Red Part 4081b Element 6281994 or 4632572 ×2
  • Plate Special 1 x 1 with Clip Vertical [Thick U Clip] Red Part 4085c Element 408521 ×1
  • Technic Axle Connector with Axle Hole Red Part 32039 Element 4118897 ×5
  • Technic Pin Connector Round [No Slot] Red Part 75535 Element 75854 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Red Part 2412b Element 241221 ×4
  • Tile Special 2 x 2 with Top Pin Red Part 2460 Element 246021 ×2
  • Wheel 11 x 12 with Hole Notched for Wheels Holder Pin Red Part 6014b Element 6207482 or 4659550 ×2

White 13 pieces

  • Antenna 1 x 4 with Rounded Top White Part 3957a ×4
  • Plate Special 2 x 2 with 1 Pin Hole [Split Underside Ribs] White Part 2444 Element 244401 ×4
  • Rubber Belt Small [15mm ID] [Round Cross Section] White Part 85543 Element 6699001 or 4580665 ×5

Trans-Red 12 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 2 spares in the box Also in Red ×6
  • Technic Axle Connector Ridged [with x Hole x Orientation] Trans-Red Part 6538b Element 4163625 ×6

Blue 7 pieces

  • Brick Curved 2 x 2 x 2/3 Two Studs and Lip End Blue Part 41855 Element 4162139 ×1
  • Flag 4 x 1 Wavy [First Wave Left] Blue Part 4495a ×2
  • Plate 1 x 2 Blue Part 3023 Element 302323 ×1
  • Tile 1 x 2 with Blue, Black, Silver, and Yellow Stripes Left Print Blue Part 3069bpr0183 ×1
  • Tile 1 x 2 with Blue, Black, Silver, and Yellow Stripes Right Print Blue Part 3069bpr0182 ×1
  • Tile Special 1 x 2 with Handle Blue Part 2432 Element 243223 ×1

Medium Blue 4 pieces

  • Mudguard 2 x 4 with 2 x 2 Studs and Flared Wings Medium Blue Part 41854 Element 4162138 ×1
  • Mudguard 2 x 4 with 2 x 2 Studs and Flared Wings, Blue/Black/Silver/Yellow Stripes Print Medium Blue Part 41854pr0011 Element 4195530 ×1
  • Plate Special 1 x 1 with Clip Light, Bar Hole [Thick Ring] Medium Blue Part 4081b Element 4194851 ×2

Orange 4 pieces

  • Mudguard 2 x 4 with 2 x 2 Studs and Flared Wings Orange Part 41854 Element 4582819 or 4162874 ×1
  • Mudguard 2 x 4 with Molded Headlights Orange Part 44674 Element 4195376 ×1
  • Tile Special 1 x 2 Grille with Bottom Groove Orange Part 2412b Element 4125254 or 3933106 ×2

Trans-Green 4 pieces

  • Plate Round 1 x 1 with Solid Stud Trans-Green Part 6141 Element 6514057 or 6240221 2 spares in the box ×4

Green 3 pieces

  • Animal / Creature Accessory, Horse Hitching, 1 x 2 Plate and 2 x 2 Plate [Studded] Green Part 2397 Element 4195768 or 239728 ×1
  • Plate 1 x 2 Green Part 3023 Element 302328 ×1
  • Plate Special 1 x 2 Side Handle [Free Ends] Green Part 2540 Element 4542391 or 4519974 ×1

Brown 2 pieces

  • Technic Axle and Pin Connector Angled #3 - 157.5° Brown Part 32016 Element 4141423 or 4130158 ×2

Pearl Light Gray 2 pieces

  • Hose, Ribbed 7mm D. 16L / 12.8cm Pearl Light Gray Part 78c16 ×2

[No Color/Any Color] 2 pieces

  • Sticker Sheet 1 for Set 8364-1 [No Color/Any Color] Part 46423 Element 4197510 ×1
  • Sticker Sheet 2 for Set 8364-1 [No Color/Any Color] Part 46357 Element 4195789 ×1

Lime 1 piece

  • Brick Curved 2 x 2 x 2/3 Two Studs and Lip End with 'M', Black/Red/Green Print Lime Part 41855pr0006 Element 4195523 ×1

Minifigures 4 figures

  • Racer - Black Helmet, Trans-Yellow Visor, Red Body Minifigure, checked as a whole figure ×1
  • Racer - Lime Helmet, Black Visor, Red Body Minifigure, checked as a whole figure ×1
  • Racer - Blue Helmet, Trans-Yellow Visor, Dark Gray Body Minifigure, checked as a whole figure ×1
  • Racer - Black Helmet, Black Visor, Dark Gray Body 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

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.