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.
373 pieces in 136 part and color combinations, plus 5 minifigures.
LEGO counts 398 pieces. This inventory comes from a separate parts catalog and lists 400, including the 27 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.
Insect Accessory, Spider WebWhitePart 30240Element 4295038 or 4164212×1
Animals / Creatures
3 pieces
Animal, BatBlackPart 30103Element 4587312 or 4106513×1
Insect, SpiderBlackPart 30238Element 4113209×1
Animal, Horse, Movable Head, Black Eyes, White Pupils, Brown Bridle PrintWhitePart 4493c01pr0011Element 4121830 or 73408×1
Bars, Ladders and Fences
3 pieces
Bar 1L with ClipBlackPart 48729aElement 4272218×1
Bar 4L (Lightsaber Blade / Wand)BlackPart 30374Element 6116604 or 4140303×1
Bar 6.6L with Stop Ring [Umbrella Stand]BlackPart 4095Element 409526×1
Technic Bushes
3 pieces
Technic BushRedPart 3713Element 6271820 or 42271551 spare in the box×3
Technic Connectors
3 pieces
Technic Axle Connector Ridged [with x Hole x Orientation]RedPart 6538bElement 4125189×1
Technic Axle and Pin Connector Angled #2 - 180°RedPart 32034Element 6351572 or 4234429×1
Technic Axle Connector Hub with 4 Bars at 90°Reddish BrownPart 48723Element 4252456×1
Minifig Accessories
2 pieces
Equipment SaucepanBlackPart 4529Element 452926×1
Equipment Crystal Ball Globe 2 x 2 x 2Trans-ClearPart 30106Element 6507889 or 6274736×1
Plates Round Curved and Dishes
2 pieces
Plate Round 1 x 1 with Solid StudRedPart 6141Element 6141211 spare in the box×2
Technic Gears
2 pieces
Technic Gear 24 Tooth [New Style with Single Axle Hole]Light Bluish GrayPart 3648bElement 4211565×2
Wheels and Tyres
2 pieces
Wheels SkateboardBlackPart 45918Element 4197514×1
Technic Wedge Belt Wheel [aka Pulley]Reddish BrownPart 4185Element 6170896 or 4561807×1
Technic Beams
1 piece
Technic Beam 1 x 3 ThickDark Bluish GrayPart 32523Element 32523199 or 4210751×1
Technic Steering, Suspension and Engine
1 piece
Technic Steering Arm with 2 PinsBlackPart 32069Element 6278276 or 4114671×1
Tubes and Hoses
1 piece
Hose Rigid 3mm D. 10L / 8.0cmBlackPart 75c10Element 4505034 or 41169411 spare in the box×1
Minifigures
5 figures
Wizard Morax (Fantasy Era) - Evil, CapeMinifigure, checked as a whole figure×1
Skeleton, Red EyesMinifigure, checked as a whole figure×2
Princess Alyssa (Fantasy Era) - Reddish Brown HairMinifigure, checked as a whole figure×1
Knight, Black, Armor, Helmet with GrilleMinifigure, 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.