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.

Blue Racer

Checking

4309 Blue Racer

31 pieces in 20 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

Yellow 11 pieces

  • Cone 1 x 1 [No Top Groove] Yellow Part 4589 Element 458924 ×2
  • Plate 2 x 3 Yellow Part 3021 Element 302124 ×1
  • Plate Round 1 x 1 with Solid Stud Yellow Part 6141 Element 614124 1 spare in the box ×4
  • 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
  • Tile Special 1 x 2 Grille with Bottom Groove Yellow Part 2412b Element 241224 ×1

Black 8 pieces

  • Brick Curved 2 x 2 with Lip, No Studs with Sleek Silver and Black Print Black Part 30602pr0027 Element 4186770 ×1
  • Plate 1 x 4 Black Part 3710 Element 371026 ×2
  • Plate 2 x 2 Black Part 3022 Element 302226 ×1
  • Tyre 14 x 9 Smooth Small Wide Slick Black Part 30028 Element 4508215 or 3002826 ×2
  • Tyre 21 x 12 with Offset Tread Small Wide Black Part 6015 Element 601526 ×2

Blue 5 pieces

  • Brick Curved 2 x 2 with Lip, No Studs Blue Part 30602 Element 4171849 ×1
  • Mudguard 2 x 4 with Molded Headlights Blue Part 44674 Element 6207380 or 4527367 ×1
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×2
  • Wedge Plate 4 x 4 with 2 x 2 Cutout Blue Part 43719 Element 6315291 or 4234930 ×1

Medium Blue 4 pieces

  • Wheel 11 x 12 with Hole Notched for Wheels Holder Pin Medium Blue Part 6014b Element 4170461 ×2
  • Wheel 8 x 9 with Hole Notched for Wheels Holder Pin Medium Blue Part 30027b Element 4170503 ×2

Dark Bluish Gray 2 pieces

  • Plate 2 x 6 Dark Bluish Gray Part 3795 Element 4211002 ×1
  • Plate Special 2 x 2 with Wheels Holder Wide Dark Bluish Gray Part 6157 Element 4210909 ×1

Light Bluish Gray 1 piece

  • Plate Special 2 x 2 with Wheel Holders Light Bluish Gray Part 4600 Element 4211504 ×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.