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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 Jam ThunderROARus Pull-Back

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42200 Monster Jam ThunderROARus Pull-Back

232 pieces in 63 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 61 pieces

  • Technic Axle 12 Black Part 3708 Element 370826 ×2
  • Technic Axle and Pin Connector Perpendicular Double Split [Reinforced] Black Part 69819 Element 6349281 ×2
  • Technic Beam 1 x 11 Thick Black Part 32525 Element 6029578 or 4534909 ×1
  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×2
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×2
  • Technic Beam 1 x 6 Thin Black Part 32063 Element 6163980 or 4114634 ×2
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×1
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×2
  • Technic Beam 2 x 5 L-Shape with Quarter Ellipse Thick Black Part 80286 Element 6407066 or 6378466 ×2
  • Technic Beam 3 x 3 T-Shape Thick Black Part 60484 Element 4552347 or 4535771 ×2
  • Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Black Part 14720 Element 6390379 ×2
  • Technic Pin Connector Round 1L [Beam] Black Part 18654 Element 6121485 1 spare in the box ×4
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Black Part 65304 Element 6321745 ×10
  • Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×23
  • Tyre 56 x 26 Tractor Black Part 70695 Element 6325260 ×4

Light Bluish Gray 48 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×9
  • Technic Beam 1 x 11.5 Double Bent Thick Light Bluish Gray Part 32009 Element 6271156 or 4234240 ×1
  • Technic Beam 1 x 3 Thick Light Bluish Gray Part 32523 Element 4211655 ×2
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Light Bluish Gray Part 11478 Element 6328063 or 6029206 ×2
  • Technic Beam 1 x 7 Thick with Alternating Holes Light Bluish Gray Part 2391 Element 6523570 ×2
  • Technic Beam 1 x 9 Bent (6 - 4) Thick Light Bluish Gray Part 6629 Element 6279885 or 4255613 ×4
  • Technic Beam 2 x 3 L-Shape with Quarter Ellipse Thick Light Bluish Gray Part 71708 Element 6361459 ×2
  • Technic Beam 3 x 5 L-Shape Thick Light Bluish Gray Part 32526 Element 4211713 ×2
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 2 spares in the box ×4
  • Technic Panel Fairing #1 Small Smooth Short, Side A Light Bluish Gray Part 87080 Element 6231876 or 6011808 ×3
  • Technic Panel Fairing #2 Small Smooth Short, Side B Light Bluish Gray Part 87086 Element 6231875 or 6013547 ×3
  • Technic Panel Fairing #21 5L Small Smooth, Side B Light Bluish Gray Part 11946 Element 6524693 or 6340661 ×1
  • Technic Panel Fairing #22 5L Small Smooth, Side A Light Bluish Gray Part 11947 Element 6524692 or 6352683 ×1
  • Technic Panel Fairing #5 Long Smooth, Side A Light Bluish Gray Part 64681 Element 6461850 or 4547584 ×1
  • Technic Panel Fairing #6 Long Smooth, Side B Light Bluish Gray Part 64393 Element 6461844 or 4547583 ×1
  • Technic Panel Fairing #7 3L Very Small Smooth, Side A Light Bluish Gray Part 2387 Element 6510996 or 6438429 ×1
  • Technic Panel Fairing #8 3L Very Small Smooth, Side B Light Bluish Gray Part 2389 Element 6513880 or 6438430 ×1
  • Technic Pin Connector Hub Perpendicular 3L with 2 Pins Light Bluish Gray Part 2393 Element 6408168 ×2
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Small Squared Pin Holes] Light Bluish Gray Part 44874 Element 6321303 1 spare in the box ×4
  • Tile Round 1 x 1 Light Bluish Gray Part 98138 Element 6284071 or 4650260 1 spare in the box ×2

Blue 35 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×12
  • Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×23

Red 35 pieces

  • Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Red Part 54200 Element 5074621 or 4504379 1 spare in the box ×2
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×6
  • Technic Axle and Pin Connector Angled #4 - 135° Red Part 32192 Element 6262898 or 4271646 ×2
  • Technic Axle and Pin Connector Angled #6 - 90° Red Part 32014 Element 6268922 or 4189131 ×2
  • Technic Beam 1 x 2 Thick Red Part 43857 Element 4185664 ×2
  • Technic Beam 1 x 5 Thick Red Part 32316 Element 4142132 or 4128589 ×1
  • Technic Beam 1 x 5 Thin with Axle Holes on Ends Red Part 11478 Element 6327047 or 6214344 ×2
  • Technic Beam 1 x 7 Thick Red Part 32524 Element 4495933 or 4162098 ×1
  • Technic Beam 3 x 5 L-Shape Thick with Alternating Holes Red Part 2477 Element 6528688 ×1
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×4
  • Technic Pin Connector Hub with 1 Axle Red Part 22961 Element 6167939 ×4
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Red Part 65304 Element 6347789 ×2
  • Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Red Part 48267 Element 6285599 ×2
  • Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Red Part 56145 Element 6414466 or 6143426 ×4

Dark Bluish Gray 33 pieces

  • Pullback Motor 6 x 3 x 5 Dark Bluish Gray Part 12799 Element 6143751 or 6024100 ×1
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×6
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Dark Bluish Gray Part 42003 Element 6273715 or 4210857 ×6
  • Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Dark Bluish Gray Part 42195 Element 6391550 ×2
  • Technic Pin 1/2 with Friction Dark Bluish Gray Part 89678 Element 6395635 1 spare in the box ×12
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Dark Bluish Gray Part 65487 Element 6282144 ×6

White 12 pieces

  • Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small White Part 53451 Element 6270106 or 4568387 1 spare in the box ×10
  • Technic Axle Pin 3L without Friction Ridges and 2L Axle White Part 65249 Element 6289797 ×2

Yellow 3 pieces

  • Technic Axle 5 Yellow Part 32073 Element 6130008 ×3

Flat Silver 2 pieces

  • Hose, Ribbed 7mm D. 3L / 2.4cm Flat Silver Part 78c03 Element 6420614 or 6116017 ×2

Pearl Titanium 2 pieces

  • Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end Pearl Titanium Part 25214 Element 6156875 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 42200-1 [No Color/Any Color] Part 10110644 Element 6522696 ×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.

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