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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.

Snowmobile

Checking

42021 Snowmobile

186 pieces in 45 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 97 pieces

  • Technic Axle 6 Black Part 3706 Element 370626 ×2
  • Technic Axle and Pin Connector Angled #3 - 157.5° Black Part 32016 Element 6261386 or 4107082 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Black Part 32184 Element 6276951 or 4121667 ×5
  • Technic Axle and Pin Connector Perpendicular Split Black Part 92907 Element 6279021 or 4610371 ×4
  • Technic Beam 1 x 11 Thick Black Part 32525 Element 6029578 or 4534909 ×4
  • Technic Beam 1 x 11.5 Double Bent Thick Black Part 32009 Element 6271152 or 4111998 ×2
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×4
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Black Part 32271 Element 6276835 or 4140327 ×2
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×2
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin Semi-Reduced Black Part 33299b Element 4563044 ×2
  • Technic Link 1 x 6 without Stoppers Black Part 32005a Element 4629921 or 4530733 ×2
  • Technic Link Tread with Beveled Edge Black Part 15379 Element 6047885 2 spares in the box ×41
  • Technic Panel Fairing #21 5L Small Smooth, Side B Black Part 11946 Element 6316923 or 6023036 ×3
  • Technic Panel Fairing #22 5L Small Smooth, Side A Black Part 11947 Element 6319983 or 6022761 ×3
  • Technic Pin Connector 3L with 2 Pins and Center Hole Black Part 15461 Element 6055630 ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×4
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×13

Light Bluish Gray 36 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×4
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×3
  • Technic Axle Connector Hub with 3 Axles at 120° Light Bluish Gray Part 57585 Element 4502595 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Light Bluish Gray Part 59443 Element 4512360 ×1
  • Technic Axle Connector with Axle Hole Light Bluish Gray Part 32039 Element 4211553 ×4
  • Technic Axle Towball Light Bluish Gray Part 2736 Element 6443149 or 4211375 ×2
  • Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Light Bluish Gray Part 14720 Element 6055519 ×1
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×3
  • Technic Gear 20 Tooth Bevel with Pin Hole Light Bluish Gray Part 87407 Element 4558690 ×4
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×1
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×6
  • Technic Shock Absorber 6.5L with Soft Spring, Standard Coil [Complete Assembly] Light Bluish Gray Part 76138 Element 6027565 or 4265688 ×2
  • Technic Steering Arm 5 x 1 with Towball Socket Light Bluish Gray Part 15459 Element 6055628 ×4

Red 14 pieces

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×14

Dark Bluish Gray 11 pieces

  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×3
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×2
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Dark Bluish Gray Part 60483 Element 6265093 or 6006141 ×4
  • Technic Steering Gear with 3 Towball Joints, Compact Dark Bluish Gray Part 15460 Element 6359227 or 6055629 ×2

Blue 9 pieces

  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×9

Lime 8 pieces

  • Technic Beam 1 x 13 Thick Lime Part 41239 Element 6308230 or 6063602 ×2
  • Technic Beam 1 x 7 Thick Lime Part 32524 Element 6308236 or 4495928 ×2
  • Technic Beam 2 x 4 L-Shape Thick Lime Part 32140 Element 6271826 or 4140345 ×4

White 5 pieces

  • Technic Beam 1 x 3 Thin White Part 6632 Element 6360038 or 4107826 ×2
  • Technic Beam 3 x 5 L-Shape Thick White Part 32526 Element 6632144 or 4585040 ×3

Tan 3 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×1
  • Technic Pin Long without Friction Ridges Tan Part 32556 ×2

Trans-Clear 2 pieces

  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Trans-Clear Part 41669 Element 4611639 ×2

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 42021-1 [No Color/Any Color] Part 16136 Element 6057477 ×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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