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.
1,551 pieces in 414 part and color combinations, plus 5 minifigures.
LEGO counts 1,552 pieces. This inventory comes from a separate parts catalog and lists 1,572, including the 21 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.
Plate 1 x 2Red ×2Trans-Red ×2Trans-Red is see-through: hold the piece up to a light.
Brick Round 1 x 1 Open StudWhite ×4Trans-Clear ×1Trans-Clear is see-through: hold the piece up to a light.
Brick Round 2 x 2 with Axle HoleWhite ×4Trans-Clear ×1Trans-Clear is see-through: hold the piece up to a light.
Panel 1 x 6 x 5White ×1Trans-Clear ×3Trans-Clear is see-through: hold the piece up to a light.
Plate Round 1 x 1 with Solid StudYellow ×9Trans-Yellow ×10Trans-Yellow is see-through: hold the piece up to a light.
Plate 1 x 4Black ×1Dark Bluish Gray ×1Black is darker than Dark Bluish Gray.
1 more look-alike pair
Technic Brick 1 x 1 with Pin HoleBlack ×1Dark Bluish Gray ×2Black is darker than Dark Bluish Gray.
Brick Sloped 45° 2 x 1 with Bottom PinDark PurplePart 3040bElement 6109814 or 4225265×2
Brick Sloped 45° 2 x 2 Double ConvexDark PurplePart 3045Element 6107202 or 4224871×2
Brick Sloped 75° 2 x 1 x 3 with Hollow StudDark PurplePart 4460bElement 6107204×2
Brick Sloped 75° 2 x 2 x 3 Double ConvexDark PurplePart 3685Element 6109972×2
Brick Sloped 75° 2 x 2 x 3 [Solid Studs]Dark PurplePart 98560Element 6109971×2
Plate 1 x 2Dark PurplePart 3023Element 4655695 or 4589622×5
Plate 1 x 6Dark PurplePart 3666Element 4655691 or 4225141×4
Plate 2 x 8Dark PurplePart 3034Element 6109931×4
Plate Round 1 x 1 with Solid StudDark PurplePart 6141Element 45665221 spare in the box×5
Plate Round Corner 4 x 4Dark PurplePart 30565Element 6584946 or 6109933×2
Plate Round Corner 6 x 6Dark PurplePart 6003Element 6310194 or 6022021×4
Plate Special 1 x 2 with 1 Stud with Groove and Inside Stud Holder (Jumper)Dark PurplePart 15573Element 6092604×6
Tile 1 x 4 with GrooveDark PurplePart 2431Element 6057988 or 4225185×3
Light Bluish Gray
80 pieces
Animal, Cat, Standing, Looking Left with Light Green Eyes, Dark Pink Nose and Mouth and Dark Bluish Gray Stripes PrintLight Bluish GrayPart 93089pr0003Element 6183850 or 6019030×1
Bracket 1 x 2 - 1 x 2Light Bluish GrayPart 99781Element 4654582×2
Bracket 1 x 2 - 2 x 2Light Bluish GrayPart 44728Element 6117967 or 6009014×1
Brick Special 1 x 2 with Vertical Clip [Open O Clip]Light Bluish GrayPart 30237bElement 6320297 or 4641682×1
Brick Special 1 x 4 with 4 Studs on One SideLight Bluish GrayPart 30414Element 4211636×1
Dish 2 x 2 Inverted [Radar]Light Bluish GrayPart 4740Element 4211512×1
Hinge Brick 2 x 2 Top Plate ThinLight Bluish GrayPart 6134Element 4211881×1
Hinge Cylinder 1 x 2 Locking with 1 Finger and Axle Hole On EndsLight Bluish GrayPart 30552Element 4211679×1
Plate 1 x 4Light Bluish GrayPart 3710Element 4211445×4
Plate 2 x 14Light Bluish GrayPart 91988Element 4662161×2
Plate 2 x 2Light Bluish GrayPart 3022Element 4211397×1
Plate 2 x 4Light Bluish GrayPart 3020Element 4211395×3
Plate Special 1 x 1 with Clip Vertical [Thin U Clip]Light Bluish GrayPart 4085bElement 4542317 or 4517961×2
Plate Special 1 x 2 [Side Handle Closed Ends]Light Bluish GrayPart 48336Element 4244627×2
Plate Special 1 x 2 with Clip Horizontal on SideLight Bluish GrayPart 11476Element 6313114 or 6028812×1
Plate Special 1 x 2 with Pin Hole UnderneathLight Bluish GrayPart 18677Element 6168633 or 6089147×1
Plate Special 1 x 4 with 2 Studs, 3 Bottom TubesLight Bluish GrayPart 92593Element 4599498×7
Plate Special 2 x 2 with 2 Pin HolesLight Bluish GrayPart 2817Element 4211376×1
Plate Special 2 x 2 with Groove and Center Stud (Jumper)Light Bluish GrayPart 87580Element 6126082 or 4565393×2
Tap 1 x 1 without Hole in SpoutLight Bluish GrayPart 4599bElement 42115032 spares in the box×2
Cone 1 x 1 [Top Groove]Glitter Trans-Neon GreenPart 59900Element 6301325 or 6093751×1
Trans-Neon Green
1 piece
Dish 2 x 2 Inverted [Radar]Trans-Neon GreenPart 4740Element 6245297 or 4112517×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 41101-1[No Color/Any Color]Part 21512Element 6116829×1
Minifigures
5 figures
Olivia - Dark Pink Top, Dark Purple SkirtMinifigure, checked as a whole figure×1
Stephanie - Lime Bikini, Magenta Skirt, Bright Pink FlowerMinifigure, checked as a whole figure×1
Susan - Red Vest, Red DressMinifigure, checked as a whole figure×1
Andrea - White Top, Tan ShortsMinifigure, checked as a whole figure×1
Nate - Dark Red PiccoloMinifigure, 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.