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.
1,607 pieces in 215 part and color combinations, plus 11 minifigures.
LEGO counts 1,669 pieces. This inventory comes from a separate parts catalog and lists 1,681, including the 74 parts inside the minifigures; 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.
Brick 1 x 2Black ×9Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Brick 2 x 2Black ×2Dark Bluish Gray ×4Black is darker than Dark Bluish Gray.
Brick Sloped 45° 2 x 1 with Bottom PinBlack ×4Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Special 1 x 2 with GrilleBlack ×4Dark Bluish Gray ×8Black is darker than Dark Bluish Gray.
Panel 1 x 2 x 1 [Square Corners]Black ×4Dark Bluish Gray ×7Black is darker than Dark Bluish Gray.
Plate 1 x 4Black ×4Dark Bluish Gray ×3Black is darker than Dark Bluish Gray.
2 more look-alike pairs
Plate 2 x 10Black ×2Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Tile 1 x 6 with GrooveBlack ×4Dark Bluish Gray ×14Black is darker than Dark Bluish Gray.
Technic Brick 4 x 4 with 2 x 2 OpeningLight Bluish GrayPart 32324Element 4211640×2
Technic BushLight Bluish GrayPart 3713Element 6275844 or 62718171 spare in the box×33
Technic Gear 16 Tooth with Round Holes [Old Style]Light Bluish GrayPart 4019Element 4562487 or 4211563×32
Technic Gear 8 ToothLight Bluish GrayPart 3647Element 4211432 or 3647194×2
Technic Gear Rack 1 x 4Light Bluish GrayPart 3743Element 6457283 or 4211450×1
Turntable 2 x 2 Plate - TopLight Bluish GrayPart 3679Element 4540203 or 4495467×3
Tan
107 pieces
Bar 1 x 4 x 2 with StudsTanPart 4083Element 4561801 or 4218194×2
Brick 1 x 1TanPart 3005Element 4113915 or 300505×8
Brick 1 x 2TanPart 3004Element 4109995 or 300405×11
Brick 1 x 4TanPart 3010Element 4113916 or 301005×3
Brick 1 x 6TanPart 3009Element 4112982 or 300905×2
Brick 1 x 8TanPart 3008Element 4159774 or 4124002×6
Brick 2 x 4TanPart 3001Element 4114319 or 300105×6
Brick Round 1 x 1 Open StudTanPart 3062bElement 4117070 or 306205×5
Brick Round 2 x 2 with Axle HoleTanPart 3941Element 4125220 or 614305×8
Brick Special 1 x 4 with 4 Studs on One SideTanPart 30414Element 4201062 or 4177990×1
Plate 1 x 2TanPart 3023Element 4113917 or 302305×10
Plate 1 x 4TanPart 3710Element 4113233 or 371005×8
Plate 2 x 10TanPart 3832Element 4249019 or 4248731×5
Plate 2 x 2TanPart 3022Element 4114084 or 302205×1
Plate 2 x 3TanPart 3021Element 4118790 or 302105×4
Plate 2 x 4TanPart 3020Element 4114309 or 302005×1
Plate 2 x 8TanPart 3034Element 4113988 or 303405×2
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)TanPart 4032aElement 4140562 or 403205×4
Technic Axle Pin without Friction Ridges LengthwiseTanPart 3749Element 4666579 or 4186017×8
Technic Beam 3 x 5 L-Shape ThickTanPart 32526Element 4234421 or 3252605×2
Tile Special 1 x 2 Grille with Bottom GrooveTanPart 2412bElement 4124456 or 393305×10
Dark Orange
54 pieces
Brick 1 x 1Dark OrangePart 3005Element 6254484 or 6000643×10
Brick 1 x 2Dark OrangePart 3004Element 4579659 or 4164441×10
Brick 1 x 3Dark OrangePart 3622Element 6263221 or 6000642×8
Brick 1 x 4Dark OrangePart 3010Element 6223040 or 4597484×6
Brick 2 x 2 CornerDark OrangePart 2357Element 6253417 or 4164442×8
Brick Sloped Inverted 45° 2 x 1Dark OrangePart 3665Element 6482689 or 4267987×12
White
11 pieces
Plate 2 x 16WhitePart 4282Element 6609534 or 4119227×1
Plate 4 x 4WhitePart 3031Element 6552127 or 4243812×2
Technic Brick 1 x 6 [5 Pin Holes]WhitePart 3894Element 389401×2
Technic Plate 2 x 4 [3 Holes]WhitePart 3709Element 370901×6
Yellow
6 pieces
Technic Plate 2 x 6 [5 Holes]YellowPart 32001Element 6038194 or 4107750×6
Trans-Neon Orange
5 pieces
Plate Round 1 x 1 with Solid StudTrans-Neon OrangePart 6141Element 6240218 or 30057471 spare in the box×5
Trans-Yellow
4 pieces
Brick 1 x 2 without Bottom TubeTrans-YellowPart 3065Element 6514265 or 6244907×2
Plate Round 1 x 1 with Solid StudTrans-YellowPart 6141Element 6514056 or 62402161 spare in the box×2
Blue
2 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×2
Trans-Green
2 pieces
Plate Round 1 x 1 with Solid StudTrans-GreenPart 6141Element 6514057 or 62402211 spare in the box×2
Trans-Red
2 pieces
Plate Round 1 x 1 with Solid StudTrans-RedPart 6141Element 6514051 or 62084501 spare in the box×2
[No Color/Any Color]
1 piece
Sticker Sheet for Set 10144-1[No Color/Any Color]Part 53390Element 4269558×1
Minifigures
11 figures
C-3PO, Pearl GoldMinifigure, checked as a whole figure×1
Astromech Droid, R2-D2, White Dome, 30361c BodyMinifigure, checked as a whole figure×1
ASP DroidMinifigure, checked as a whole figure×1
Jawa, CapeMinifigure, checked as a whole figure×3
Astromech Droid, R5-D4, Plain DomeMinifigure, checked as a whole figure×1
Owen LarsMinifigure, checked as a whole figure×1
GNK Power Droid (Gonk) - Dark Bluish GreyMinifigure, checked as a whole figure×1
Treadwell DroidMinifigure, checked as a whole figure×1
Astromech Droid, R1-G4, Plain DomeMinifigure, checked as a whole figure×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.