BlockTalk Find Your Set

Free tool

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.

Mini CLAAS XERION

Checking

42102 Mini CLAAS XERION

130 pieces in 46 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.

Show

Piece checklist

Black 38 pieces

  • Technic Axle 4 Black Part 3705 Element 370526 ×1
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×4
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×3
  • Technic Beam 1 x 2 Thick Black Part 43857 Element 4385726 or 4177444 ×4
  • Technic Beam 2 x 4 L-Shape Thick Black Part 32140 Element 6271825 or 4120017 ×3
  • Technic Beam 3 x 0.5 Liftarm with Boss and Blocked, Squared Pin Hole Black Part 61408 Element 6313520 ×1
  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×3
  • Technic Gear 36 Tooth Double Bevel Black Part 32498 Element 4255563 or 4177434 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×13
  • Tyre 30.4 x 14 Offset Tread [Centre Band] Black Part 92402 Element 4619323 ×4

Light Bluish Gray 24 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×5
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×1
  • Technic Beam 1 x 3 Thin Light Bluish Gray Part 6632 Element 6360043 or 4211566 ×1
  • Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Light Bluish Gray Part 14720 Element 6055519 ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×7
  • Technic Gear 16 Tooth Reinforced [New Style] Light Bluish Gray Part 94925 Element 4640536 ×3
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins (Squared Holes) Light Bluish Gray Part 65489 Element 6282158 ×3
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Light Bluish Gray Part 65487 Element 6282142 ×3

Blue 22 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×11
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×11

Red 16 pieces

  • Technic Axle 6 Red Part 3706 Element 6130002 or 4191526 ×1
  • Technic Axle and Pin Connector Perpendicular Red Part 6536 Element 6261373 or 4188298 ×2
  • 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 Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×5
  • Technic Pin Connector Round [Slotted] Red Part 62462 Element 6173126 or 4526984 ×1
  • Wheel 18mm x 14mm with Axle Hole, Fake Bolts and Shallow Spokes Red Part 55982 Element 6280365 or 4570807 ×4

Dark Bluish Gray 9 pieces

  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Dark Bluish Gray Part 59443 Element 6084613 or 4516546 ×1
  • Technic Axle and Pin Connector Block 4 x 3 x 2 1/2 [Linear Actuator Holder] Dark Bluish Gray Part 61904 Element 6356106 or 4528038 ×1
  • Technic Beam 1 x 3 Thick Dark Bluish Gray Part 32523 Element 32523199 or 4210751 ×3
  • Technic Beam 1 x 7 Thick Dark Bluish Gray Part 32524 Element 4495931 or 4210752 ×2
  • Technic Beam 3 x 5 L-Shape Thick Dark Bluish Gray Part 32526 Element 4210753 ×1

Lime 8 pieces

  • Technic Beam 1 x 2 Thick Lime Part 43857 Element 6149993 or 4263119 ×1
  • Technic Beam 2 x 4 L-Shape Thick Lime Part 32140 Element 6271826 or 4140345 ×3
  • Technic Beam 3 x 5 L-Shape Thick Lime Part 32526 Element 6286222 or 6170475 ×2
  • Technic Panel Fairing #21 5L Small Smooth, Side B Lime Part 11946 Element 6340657 or 6218483 ×1
  • Technic Panel Fairing #22 5L Small Smooth, Side A Lime Part 11947 Element 6352667 or 6218484 ×1

Tan 6 pieces

  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×4
  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×1
  • Technic Gear 20 Tooth Bevel Tan Part 32198 Element 6031962 or 4514557 ×1

White 3 pieces

  • Technic Beam 1 x 3 Thick White Part 32523 Element 6632140 or 4208160 ×1
  • Technic Beam 2 x 4 L-Shape Thick White Part 32140 Element 6271824 or 4118980 ×2

Reddish Brown 2 pieces

  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×2

Yellow 1 piece

  • Technic Axle 5 Yellow Part 32073 Element 6130008 ×1

[No Color/Any Color] 1 piece

  • Sticker Sheet for Set 42102-1 [No Color/Any Color] Part 65481 Element 6282035 ×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.

We value your privacy

We use cookies 🍪 for analytics and to improve your experience. Read our privacy policy