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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.

Drag Racer

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42050 Drag Racer

647 pieces in 113 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.

Look-alike colors in this set

These parts appear in this set in two colors that are easy to confuse. If you are one short in one color, check whether it went in where the other color belongs. Each color has its own element ID in the parts list at the back of the instructions.

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Piece checklist

Technic Pins 257 pieces

  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×8
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Black Part 32054 Element 4140801 or 4107742 ×16
  • Technic Pin with Friction Ridges Lengthwise and Center Slots Black Part 2780 Element 4121715 or 278026 2 spares in the box ×125
  • Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×22
  • Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×8
  • Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×62
  • Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×6
  • Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×4
  • Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] Red Part 32054 Element 4140806 or 4125198 ×4
  • Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×2

Technic Beams 101 pieces

  • Technic Beam 1 x 11 Thick Black Part 32525 Element 6029578 or 4534909 ×4
  • Technic Beam 1 x 15 Thick Black Part 32278 Element 4542573 or 4128603 ×8
  • Technic Beam 1 x 2 Thick with Pin Hole and Axle Hole Black Part 60483 Element 6265091 or 6006140 ×9
  • Technic Beam 1 x 3 Thick Black Part 32523 Element 4142822 or 3252326 ×2
  • Technic Beam 1 x 3 Thin Black Part 6632 Element 6331723 or 4107828 ×6
  • Technic Beam 1 x 5 Thick Black Part 32316 Element 4142135 or 4140429 ×11
  • Technic Beam 1 x 7 Bent (4 - 4) Thick Black Part 32348 Element 6278125 or 4128593 ×2
  • Technic Beam 1 x 7 Thick Black Part 32524 Element 4495935 or 4155458 ×7
  • Technic Beam 3 x 5 L-Shape Thick Black Part 32526 Element 4142823 or 3252626 ×8
  • Technic Beam 1 x 9 Thick Dark Bluish Gray Part 40490 Element 4645730 or 4210757 ×2
  • Technic Beam 1 x 15 Thick Light Bluish Gray Part 32278 Element 4542577 or 4211770 ×2
  • Technic Beam 1 x 2 Thin Light Bluish Gray Part 41677 Element 6348143 or 4211741 ×3
  • Technic Beam 1 x 3 Thick Light Bluish Gray Part 32523 Element 4211655 ×3
  • Technic Beam 1 x 5 Thick Light Bluish Gray Part 32316 Element 4211651 ×6
  • Technic Beam 2 x 4 L-Shape Thick Light Bluish Gray Part 32140 Element 6271831 or 4211610 ×3
  • Technic Beam 3 x 3 L-Shape Thin Light Bluish Gray Part 32056 Element 6271815 or 4211574 ×2
  • Technic Beam 3 x 3 T-Shape Thick Light Bluish Gray Part 60484 Element 4552348 or 4535772 ×4
  • Technic Beam 1 x 13 Thick Medium Azure Part 41239 Element 6261643 or 6133901 ×3
  • Technic Beam 1 x 7 Thick Medium Azure Part 32524 Element 6261638 or 6133891 ×4
  • Technic Beam 1 x 15 Thick Red Part 32278 Element 4542575 or 4163147 ×12

Technic Connectors 89 pieces

  • Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Black Part 6553 Element 4107765 or 655326 ×1
  • Technic Axle Connector Smooth [with x Hole + Orientation] Black Part 59443 Element 6084612 or 4512363 ×13
  • Technic Axle and Pin Connector Angled #1 Black Part 32013 Element 6284699 or 4107085 ×7
  • Technic Axle and Pin Connector Angled #5 - 112.5° Black Part 32015 Element 6271346 or 4107084 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black Part 42003 Element 6273708 or 4200326 ×5
  • Technic Axle and Pin Connector Toggle Joint Smooth Black Part 32126 Element 6457112 or 6322045 ×2
  • Technic Pin Connector 3L with 2 Pins and Center Hole Black Part 15461 Element 6055630 ×3
  • Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise Black Part 15100 Element 6073231 ×5
  • Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] Black Part 32530 Element 4144024 ×1
  • Technic Pin Connector Toggle Joint Smooth Double with Axle and Pin Holes Black Part 87408 Element 6278412 or 4558692 ×1
  • Technic Axle and Pin Connector Angled #4 - 135° Dark Bluish Gray Part 32192 Element 6262899 or 4210688 ×2
  • Technic Pin Connector Round 1L [Beam] Dark Bluish Gray Part 18654 Element 6100030 1 spare in the box ×3
  • Technic Axle and Pin Connector Perpendicular Light Bluish Gray Part 6536 Element 6261375 or 4211775 ×11
  • Technic Axle and Pin Connector Perpendicular Triple Light Bluish Gray Part 63869 Element 6331441 or 4538007 ×9
  • Technic Pin Connector Hub Perpendicular 3 x 3 Bent with 4 Pins (Pin Ridges Across Part) Light Bluish Gray Part 55615 Element 4296059 ×2
  • Technic Pin Connector Hub Perpendicular 3L with 4 Pins Light Bluish Gray Part 48989 Element 4225033 ×3
  • Technic Pin Connector Hub with 2 Pins with Friction Ridges Lengthwise [Big Squared Pin Holes] Light Bluish Gray Part 87082 Element 4560175 ×4
  • Technic Pin Connector Round [Slotted] Light Bluish Gray Part 62462 Element 6173127 or 4526985 ×3
  • Technic Axle and Pin Connector Angled #3 - 157.5° Medium Azure Part 32016 Element 6261392 or 6133917 ×6
  • Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Red Part 42003 Element 6273712 or 4175442 ×2
  • Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole Red Part 32184 Element 6276963 or 4128598 ×2
  • Technic Pin Connector Round [Slotted] White Part 62462 Element 6550164 or 6173116 ×2

Technic Axles 50 pieces

  • Technic Axle 12 Black Part 3708 Element 370826 ×2
  • Technic Axle 4 Black Part 3705 Element 370526 ×6
  • Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×2
  • Technic Axle 5.5 with Stop [Rounded Short End] Dark Bluish Gray Part 59426 Element 4508553 ×1
  • Technic Axle 8 with Stop Dark Bluish Gray Part 55013 Element 4499858 ×2
  • Technic Axle 5 with Stop Dark Tan Part 15462 Element 6055631 ×3
  • Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×16
  • Technic Axle 5 Light Bluish Gray Part 32073 Element 32073194 or 4211639 ×5
  • Technic Axle 2 Notched Red Part 32062 Element 4142865 ×7
  • Technic Axle 6 Red Part 3706 Element 6130002 or 4191526 ×1
  • Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×2
  • Technic Axle 7 Yellow Part 44294 Element 6130009 ×3

Technic Steering, Suspension and Engine 31 pieces

  • Technic Steering Wheel Pilot's Yoke [Hollow Stud, Axle Hole with + Opening] Dark Bluish Gray Part 18352 Element 6082043 ×1
  • Technic Engine Connecting Rod Light Bluish Gray Part 2852 Element 6000018 or 4655728 ×8
  • Technic Engine Cylinder without Side Slots, with Bottom Slots Light Bluish Gray Part 2850b Element 6514436 or 6383961 ×8
  • Technic Universal Joint 3L [Complete Assembly] Light Bluish Gray Part 61903 Element 6335279 or 6321309 ×1
  • Technic Engine Crankshaft Center Tan Part 2854 Element 6355727 or 6013937 ×3
  • Technic Engine Crankshaft Yellow Part 2853 Element 6640378 or 4119474 ×2
  • Technic Engine Piston Round Yellow Part 2851 Element 4112203 or 285124 ×8

Technic Special 25 pieces

  • Technic Ball Joint with Through Axle Hole Black Part 53585 Element 4286267 ×2
  • Technic Disc 3 x 3 Black Part 2723 Element 4218868 or 4121619 ×2
  • Technic Link, Reinforced, with Beveled Edge Black Part 14696 Element 6044702 1 spare in the box ×18
  • Technic Link 1 x 9 Bent (6 - 4) Dark Bluish Gray Part 64451 Element 6170705 or 4539297 ×2
  • Technic Linear Actuator Mini with Dark Bluish Gray Head and Orange Axle Light Bluish Gray Part 92693 Element 6221464 or 4612100 ×1

Technic Panels 20 pieces

  • Technic Panel 3 x 11 x 1 Black Part 15458 Element 6080356 ×2
  • Technic Panel 5 x 11 x 1 Black Part 64782 Element 4566243 ×4
  • 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 Panel Fairing #5 Long Smooth, Side A Black Part 64681 Element 4558774 ×1
  • Technic Panel Fairing #6 Long Smooth, Side B Black Part 64393 Element 4558731 ×1
  • Technic Panel Curved and Bent 6 x 3 Blue Part 24116 Element 6268009 or 6133684 ×1
  • Technic Panel Curved 11 x 3 with 10 Pin Holes through Panel Surface Medium Azure Part 11954 Element 6133928 ×3
  • Technic Panel Fairing #21 5L Small Smooth, Side B Medium Azure Part 11946 Element 6134349 ×1
  • Technic Panel Fairing #22 5L Small Smooth, Side A Medium Azure Part 11947 Element 6134350 ×1

Technic Bushes 17 pieces

  • Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×9
  • Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×8

Technic Gears 12 pieces

  • Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×3
  • Technic Gear Rack 1 x 7 with Axle and Pin Holes Black Part 87761 Element 6327430 or 4562009 ×1
  • Technic Gear 16 Tooth Reinforced [New Style] Light Bluish Gray Part 94925 Element 4640536 ×4
  • Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×3
  • Technic Gear 20 Tooth Bevel Tan Part 32198 Element 6031962 or 4514557 ×1

Tubes and Hoses 12 pieces

  • Axle Hose, Soft 16L Black Part 32202 Element 6057525 or 4121649 ×1
  • Axle Hose, Soft 7L Black Part 32580 Element 6132744 ×2
  • Hose, Ribbed 7mm D. 9L / 7.2cm Black Part 78c09 Element 6443871 or 6420612 ×1
  • Hose, Ribbed 7mm D. 6L / 4.8cm Flat Silver Part 78c06 Element 4620076 ×8

Wheels and Tyres 10 pieces

  • Tyre 49.53 x 20 Black Part 15413 Element 6518565 or 6055626 ×2
  • Tyre 81.6 x 44 R Black Part 18450 Element 6482460 or 6199832 ×2
  • Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Black Part 56145 Element 4299389 or 4284946 ×2
  • Wheel 43.2 x 26 Technic Racing Small with 6 Pinholes Black Part 56908 Element 6276858 or 6078892 ×2
  • Wheel 11 x 8 with Center Groove Light Bluish Gray Part 42610 Element 4211758 ×2

Technic Beams Special 7 pieces

  • Technic Pin Connector Double with Bar [2 Holes] Black Part 85940 Element 6173124 or 4562148 ×1
  • Technic Beam 3 x 0.5 Liftarm with Boss and Pin Semi-Reduced Light Bluish Gray Part 33299b Element 4563045 ×5
  • Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Light Bluish Gray Part 14720 Element 6055519 ×1

Tiles Round and Curved 7 pieces

  • Tile Round 1 x 1 with Gauge and Red Pointer Print Flat Silver Part 98138pr0012 Element 6287877 or 6030333 1 spare in the box ×1
  • Tile Round 1 x 1 Trans-Clear Part 98138 Element 6514191 or 6274738 1 spare in the box Also in White ×4
  • Tile Round 1 x 1 White Part 98138 Element 6564903 or 6284572 1 spare in the box Also in Trans-Clear ×2

Technic Bricks 4 pieces

  • Technic Brick 1 x 2 [2 Pin Holes] Black Part 32000 Element 3200026 ×2
  • Technic Pin Connector Block 1 x 5 x 3 Black Part 32333 Element 6271358 or 4141810 ×2

Bars, Ladders and Fences 2 pieces

  • Bar 6L with Stop Ring Black Part 63965 Element 6170421 or 6081988 ×2

Bricks Round and Cones 2 pieces

  • Cone 3 x 3 x 2 Light Bluish Gray Part 6233 Element 6410336 or 4497653 ×2

Stickers 1 piece

  • Sticker Sheet for Set 42050-1 [No Color/Any Color] Part 25032 Element 6136657 ×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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