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.

Stunt Bike

Checking

42058 Stunt Bike

140 pieces in 53 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 53 pieces

  • Technic Axle 2 Notched Black Part 32062 Element 4109810 or 3206226 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×4
  • Technic Axle Connector Double Flexible [Rubber] Black Part 45590 Element 4198367 ×2
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×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 ×3
  • Technic Axle and Pin Connector Perpendicular Double Black Part 32291 Element 6280394 or 4140430 ×1
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×2
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Black Part 60483 Element 6265091 or 6006140 ×6
  • Technic Beam 1 x 2 Thin Black Part 41677 Element 6338428 or 4167726 ×2
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×2
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×1
  • 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 ×7
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise Black Part 15100 Element 6073231 ×2
  • Technic Pin Connector Hub with 2 Perpendicular Axles Black Part 10197 Element 6099801 or 6098801 ×2
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 1 spare in the box ×7
  • Tyre 43.2 x 22 ZR Black Part 44309 Element 4184286 ×2
  • Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Black Part 56145 Element 4299389 or 4284946 ×2

Light Bluish Gray 27 pieces

  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×5
  • Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×3
  • Technic Axle Connector Smooth [with x Hole + Orientation] Light Bluish Gray Part 59443 Element 4512360 ×1
  • Technic Axle and Pin Connector Angled #6 - 90° Light Bluish Gray Part 32014 Element 6268924 or 4509886 ×1
  • Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×7
  • Technic Gear 16 Tooth Reinforced [New Style] Light Bluish Gray Part 94925 Element 4640536 ×2
  • Technic Pin 1/2 without Friction Ridges Light Bluish Gray Part 4274 Element 4274194 or 4211483 1 spare in the box ×2
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise Light Bluish Gray Part 15100 Element 6172538 ×2
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Light Bluish Gray Part 32054 Element 4211865 ×2
  • Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×2

Yellow 21 pieces

  • Technic Beam 1 x 3 Thin Yellow Part 6632 Element 6344174 or 4107823 ×6
  • Technic Beam 1 x 9 Bent (7 - 3) Thick Yellow Part 32271 Element 6276838 or 4544005 ×1
  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Yellow Part 32123b Element 6271167 or 3212324 1 spare in the box ×10
  • Technic Panel Fairing # 3 Small Smooth Long, Side A Yellow Part 64683 Element 6533795 or 6005195 ×1
  • Technic Panel Fairing # 4 Small Smooth Long, Side B Yellow Part 64391 Element 6533801 or 6005197 ×1
  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Yellow Part 41669 Element 6174481 or 4194642 ×2

Blue 15 pieces

  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×5
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×10

Dark Bluish Gray 9 pieces

  • Pullback Motor 6 x 3 x 5 Dark Bluish Gray Part 12799 Element 6143751 or 6024100 ×1
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×2
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×2
  • Technic Axle and Pin Connector Perpendicular Dark Bluish Gray Part 6536 Element 6536199 or 6261374 ×2
  • Technic Beam 1 x 9 Thick Dark Bluish Gray Part 40490 Element 4645730 or 4210757 ×2

Red 3 pieces

  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×2
  • Technic Gear 16 Tooth with Clutch on Both Sides Red Part 18946 Element 6100930 ×1

Trans-Clear 2 pieces

  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 1 spare in the box ×2

Trans-Medium Blue 2 pieces

  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Trans-Medium Blue Part 41669 Element 6174477 or 4163578 ×2

Trans-Red 2 pieces

  • Technic Tooth 1 x 3 with Axle Hole [Rounded Underside] Trans-Red Part 41669 Element 4163567 ×2

[No Color/Any Color] 2 pieces

  • Ramp, 127 x 111 mm with Yellow Chevrons and Curb Markings Print [No Color/Any Color] Part 28884 Element 6170185 ×1
  • Sticker Sheet for Set 42058-1 [No Color/Any Color] Part 30803 Element 6177605 ×1

Flat Silver 1 piece

  • Hose, Ribbed 7mm D. 6L / 4.8cm Flat Silver Part 78c06 Element 4620076 ×1

Reddish Brown 1 piece

  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×1

Tan 1 piece

  • Technic Pin Long without Friction Ridges Tan Part 32556 ×1

White 1 piece

  • Technic Beam 1 x 3 Thick with Black '40 1977 - 2017' and 24 Tooth Gear Print White Part 32523pr0001 Element 6170737 ×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.