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.

Racers Hazard Kit

Checking

4243534 Racers Hazard Kit

35 pieces in 13 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

Orange 9 pieces

  • Cone Base 6 x 6 with 'X' Cutout Orange Part upn0290 ×3
  • Cone Triangle Upright with Silver Stripe 6 x 6 with Bottom Cutout Orange Part upn0292pr0001 ×3
  • Cone Upright with Silver Stripe 6 x 6 with Top Cutout Orange Part upn0291pr0001 ×3

Light Bluish Gray 8 pieces

  • Cone Base 6 x 6 with 'X' Cutout Light Bluish Gray Part upn0290 ×4
  • Cone Triangle Upright 6 x 6 with Top Cutout Light Bluish Gray Part upn0291 ×4

Black 7 pieces

  • Tyre 30.4 x 14 VR Black Part 6578 Element 4561806 or 657826 ×5
  • Tyre 43.2 x 28 Balloon Small Black Part 6579 Element 657926 ×2

Yellow 5 pieces

  • Barrel with Black Warning Stripes and Lego Logo Yellow Part upn0293 ×3
  • Cone Triangle Upright 6 x 6 with Top Cutout Yellow Part upn0291 ×2

White 4 pieces

  • Barrier, Lego and Racers Logos One Side, Red Danger Stripes on Reverse White Part upn0288 ×2
  • Ramp Support, 22 x 7 White Part upn0287 ×2

Dark Bluish Gray 1 piece

  • Ramp, 20 x 20 with Tyre Marks and LEGO Logo Print Dark Bluish Gray Part upn0286 ×1

Red 1 piece

  • Backdrop, Arch, Foam Racers Flame Hoop 26 x 24 Red Part upn0289 ×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.