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.
LEGO counts 1,920 pieces. This inventory comes from a separate parts catalog and lists 1,922; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.
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.
Tile Round 1 x 1Trans-Brown ×1Dark Bluish Gray ×1Trans-Brown is see-through: hold the piece up to a light.
Tile Round 1 x 1Black ×3Trans-Brown ×1Trans-Brown is see-through: hold the piece up to a light.
Technic Axle Connector Smooth [with x Hole + Orientation]Black ×8Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Axle and Pin Connector PerpendicularBlack ×4Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Technic Beam 1 x 11 ThickBlack ×3Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic Beam 1 x 3 ThickBlack ×2Dark Bluish Gray ×11Black is darker than Dark Bluish Gray.
6 more look-alike pairs
Technic Beam 1 x 9 ThickBlack ×8Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic Beam 3 x 3 L-Shape ThinBlack ×10Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Technic CamBlack ×3Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Technic Connector Beam 3 x 3Black ×2Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic Pin Connector Hub with 1 AxleBlack ×16Dark Bluish Gray ×3Black is darker than Dark Bluish Gray.
Tile Round 1 x 1Black ×3Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
Technic Steering Hub for Portal AxleDark Bluish GrayPart 92909Element 4610378×2
Tile Round 1 x 1Dark Bluish GrayPart 98138Element 6284596 or 62224161 spare in the boxAlso in BlackAlso in Trans-Brown×1
Yellow
48 pieces
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)YellowPart 4032aElement 403224×1
Technic Axle 11YellowPart 23948Element 6130012×7
Technic Axle 5YellowPart 32073Element 6130008×7
Technic Axle 7YellowPart 44294Element 6130009×1
Technic Axle 9YellowPart 60485Element 6130010×1
Technic Beam 1 x 11 ThickYellowPart 32525Element 6028107 or 4534912×6
Technic Beam 1 x 2 ThickYellowPart 43857Element 4187122×2
Technic Beam 1 x 7 ThickYellowPart 32524Element 4495934 or 4187082×1
Technic Beam 3 x 5 L-Shape ThickYellowPart 32526Element 4144022×10
Technic Engine CrankshaftYellowPart 2853Element 6640378 or 4119474×2
Technic Engine Piston RoundYellowPart 2851Element 4112203 or 285124×4
Technic Knob WheelYellowPart 32072Element 6284189 or 4203493×3
Technic Panel 5 x 11 x 1YellowPart 64782Element 6311003 or 6038636×2
Tile Round 1 x 1YellowPart 98138Element 6284577 or 60707141 spare in the box×1
Tan
31 pieces
Technic Axle 4 with Centre StopTanPart 99008Element 4666999×2
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×5
Technic Engine Crankshaft CenterTanPart 2854Element 6355727 or 6013937×3
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 1 [+ Opening]TanPart 18575Element 6346517 or 6084724×2
Technic Pin 3/4TanPart 32002Element 6663097 or 60139381 spare in the box×15
Technic Pin Connector Round 1L [Beam]TanPart 18654Element 61679231 spare in the box×3
Technic Pin Long without Friction Ridges, with Anti-Roll NotchTanPart 39888Element 6321305×1
Reddish Brown
16 pieces
Technic Axle 3 with StopReddish BrownPart 24316Element 6135494×7
Technic Axle 5 with StopReddish BrownPart 15462Element 6159763×9
Dark Tan
9 pieces
Technic Axle 3 with StudDark TanPart 6587Element 6031821 or 6013821×9
Trans-Clear
7 pieces
Technic Engine Cylinder without Side Slots, with Bottom SlotsTrans-ClearPart 2850bElement 6514435 or 6353017×4
Tile Special 2 x 3 PentagonalTrans-ClearPart 22385Element 6514162 or 6299534×2
Windscreen, Curved with White Edges Print (Sticker)Trans-ClearPart 75544pr0001Element 6361895×1
Flat Silver
5 pieces
Hose, Ribbed 7mm D. 3L / 2.4cmFlat SilverPart 78c03Element 6420614 or 6116017×2
Zipline, 22L with 2 Connectors - FlexibleFlat SilverPart 27965Element 62105901 spare in the box×3
Orange
3 pieces
Gear ShifterOrangePart 35188Element 6227330×1
Technic Axle and Pin Connector Angled #3 - 157.5°OrangePart 32016Element 6366185 or 6251180×2
Dark Azure
2 pieces
Brick Wedged, Curved 2 x 1 with Stud Notch LeftDark AzurePart 29120Element 6211418×1
Technic Tooth 1 x 3 with Axle Hole [Hollow Underside]Dark AzurePart 48267Element 6292486×1
Pearl Titanium
2 pieces
Technic Shock Absorber 18L with Internal SpringPearl TitaniumPart 69633Element 6328490×2
[No Color/Any Color]
2 pieces
Sticker Sheet 1 for Set 42130-1[No Color/Any Color]Part 77606Element 6338501×1
Sticker Sheet 2 for Set 42130-1[No Color/Any Color]Part 82043Element 6369394×1
Trans-Brown
1 piece
Tile Round 1 x 1Trans-BrownPart 98138Element 6514195 or 62747441 spare in the boxAlso in BlackAlso in Dark Bluish Gray×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.
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.