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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.

Checking

42226 BMW M4 GT3 EVO Race Car

747 pieces in 222 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.

Every bag and the box. Shake out each bag, check its corners and seams, and look inside the empty box.
Inside what you have built. Small pieces lodge inside tubes, under plates and between studs. Turn the model over and look.
The last few steps. Compare each recent step with its parts callout. A piece used in the wrong place earlier leaves you one short later.
Look-alike colors. 2 parts in this set come in two colors that are easy to mix up; they are listed below.
The spare pieces. This set comes with 21 spare pieces, marked on each row of the checklist. One may be the piece you need.
The floor and your building area. Check under furniture, the chair and the edges of your building surface.

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.

Tile 1 x 2 with Groove White ×1 Trans-Clear ×2 Trans-Clear is see-through: hold the piece up to a light.
Technic Axle 1.5 with Perpendicular Axle Connector (Technic Pole Reverser Handle) Black ×2 Dark Bluish Gray ×4 Black is darker than Dark Bluish Gray.

Piece checklist

Technic Bushes 18 pieces

Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Black Part 32123b Element 6600750 1 spare in the box ×6
Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×2
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×2
Technic Bush Red Part 3713 Element 6271820 or 4227155 1 spare in the box ×6
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced White Part 32123b Element 6634562 or 6360263 1 spare in the box ×2

Plates Special 16 pieces

Bracket 1 x 1 - 1 x 1 Inverted Black Part 36840 Element 6234695 ×2
Bracket 1 x 2 - 1 x 2 Black Part 99781 Element 6016172 ×2
Plate Special 1 x 2 with Pin Hole Underneath Black Part 18677 Element 6192309 or 6167497 ×1
Plate Special 2 x 2 with 1 Pin Hole [Complete Underside Rib] Black Part 10247 Element 6061032 ×6
Plate Special Round 1 x 1 with Hollow Stud and Horizontal Bar 1L Black Part 32828 Element 6196548 1 spare in the box ×2
Plate Special 1 x 2 with Pin Hole Underneath White Part 18677 Element 6232029 ×3

Technic Steering, Suspension and Engine 15 pieces

Technic Steering Wheel Pilot's Yoke [Closed Top] Black Part 49151 Element 6378464 ×1
Technic Crank Disc Light Bluish Gray Part 4368 Element 6452845 ×6
Technic Engine Crankshaft Yellow Part 2853 Element 6640378 or 4119474 ×2
Technic Piston Yellow Part 4369 Element 6452846 ×6

Technic Gears 14 pieces

Technic Gear 12 Tooth Double Bevel Black Part 32270 Element 4177431 ×2
Technic Gear Rack 1 x 7 with Axle and Pin Holes Black Part 87761 Element 6327430 or 4562009 ×1
Technic Gear 12 Tooth with Axle Hole Blue Part 69778 Element 6396479 ×1
Technic Gear 8 Tooth [Reinforced] Dark Bluish Gray Part 10928 Element 6631413 or 6012451 ×3
Technic Gear Differential with Inner Tabs and Closed Center, 28 Bevel Teeth [Beveled Edge] Dark Bluish Gray Part 62821b Element 4562210 or 4525184 ×1
Technic Gear 24 Tooth with Clutch on Both Sides Red Part 2471 Element 6408179 ×1
Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 ×4
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening] Tan Part 18575 Element 6346517 or 6084724 ×1

Technic Beams Special 11 pieces

Technic Beam 1 x 2 with Axle on Side Black Part 7244 Element 6542617 ×2
Technic Pin Connector Double with Bar [2 Holes] Black Part 85940 Element 6173124 or 4562148 ×2
Technic Beam 2 x 3 Thick [90° Offset Centre Beam Hole] Dark Bluish Gray Part 3167 Element 6475314 ×2
Technic Beam 3 x 5 Thick [90° Offset Centre Beam Holes] Dark Bluish Gray Part 14720 Element 6396959 ×1
Technic Beam Frame 5 x 7 with 3 x 5 Opening Thick Light Bluish Gray Part 64179 Element 4539880 ×1
Technic Beam Frame 7 x 11 White Part 39794 Element 6247435 ×1
Technic Link 1 x 6 x 2 Angled, Bent, Double White Part 7684 Element 6601523 ×2

Panels 9 pieces

Panel 1 x 1 x 1 Corner Black Part 6231 Element 4106347 or 4101709 ×4
Panel 1 x 2 x 1 [Rounded Corners] Black Part 4865b Element 6146220 ×5

Tiles 8 pieces

Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×1
Tile 1 x 4 with Groove Black Part 2431 Element 243126 ×1
Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×2
Tile 2 x 6 Black Part 69729 Element 6318582 ×1
Tile 1 x 2 with Groove Trans-Clear Part 3069b Element 6514223 or 6251294 Also in White ×2
Tile 1 x 2 with Groove White Part 3069b Element 6548264 or 306901 Also in Trans-Clear ×1

Wheels and Tyres 8 pieces

Tyre 43.2 x 14 Black Part 30699 Element 6518575 or 6182551 ×2
Tyre 43.2 x 22 ZR Black Part 44309 Element 4184286 ×2
Wheel 30 x 14 Black Part 56904 Element 6251174 ×2
Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Black Part 56145 Element 4299389 or 4284946 ×2

Bars, Ladders and Fences 7 pieces

Bar 3L Bright Green Part 87994 Element 6161772 1 spare in the box ×1
Bar 2L with Towball Dark Bluish Gray Part 22484 Element 6364352 or 6360117 ×2
Bar 4L (Lightsaber Blade / Wand) Red Part 30374 Element 6296954 or 4648251 ×2
Bar 3L White Part 87994 Element 6552205 or 6428803 1 spare in the box ×2

Technic Special 6 pieces

Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Black Part 48267 Element 6288220 ×2
Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Blue Part 48267 Element 6597518 or 6336385 ×4

Tiles Special 6 pieces

Tile 1 x 2 with Stud Notch Left Black Part 5091 Element 6510125 or 6458187 ×1
Tile 1 x 2 with Stud Notch Right Black Part 5092 Element 6510139 or 6458188 ×1
Tile Special 1 x 2 Grille with Bottom Groove Black Part 2412b Element 241226 ×4

Bricks Wedged 4 pieces

Brick Wedged, Curved 2 x 1 with Stud Notch Left Black Part 29120 Element 6181720 ×1
Brick Wedged, Curved 2 x 1 with Stud Notch Right Black Part 29119 Element 6181713 ×1
Brick Wedged, Curved 2 x 2 with Stud Notch Left Black Part 5095 Element 6507846 or 6477763 ×1
Brick Wedged, Curved 2 x 2 with Stud Notch Right White Part 5093 Element 6513906 or 6477757 ×1

Pneumatics 4 pieces

Pneumatic T-Piece (T Bar) [New Style] Black Part 4697b Element 6104209 1 spare in the box ×2
Pneumatic Hose Connector with Axle Connector Dark Bluish Gray Part 99021 Element 6265669 or 6020189 ×2

Technic Bricks 4 pieces

Technic Brick 1 x 3 [3 Pin Holes] Black Part 5565 Element 6572774 ×2
Technic Brick 1 x 8 [7 Pin Holes] White Part 3702 Element 4582543 or 370201 ×2

Bricks Sloped 3 pieces

Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) Black Part 54200 Element 4504382 or 4287159 1 spare in the box ×2
Brick Sloped 30° 1 x 4 x 2/3 Black Part 7835 Element 6601521 ×1

Plates Wedged 2 pieces

Wedge Plate 3 x 2 Left Black Part 43723 Element 4180536 ×1
Wedge Plate 3 x 2 Right Black Part 43722 Element 4180508 ×1

Plates Round Curved and Dishes 1 piece

Plate Special 1 x 2 Rounded with 2 Open Studs Lime Part 35480 Element 6264062 ×1

Stickers 1 piece

Sticker Sheet for Set 42226-1 [No Color/Any Color] Part 10115269 Element 6580515 ×1

Transportation - Land 1 piece

Wheel Arch, Mudguard 10 x 4 x 2/3 Black Part 3166 Element 6491822 ×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.

LEGO Missing Piece Checker

42226 BMW M4 GT3 EVO Race Car

Before you call it missing

Look-alike colors in this set

Your missing list

Piece checklist

Technic Pins 222 pieces

Technic Connectors 147 pieces

Technic Beams 79 pieces

Technic Panels 64 pieces

Technic Axles 63 pieces