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.
Technic Axle and Pin Connector Angled #1RedPart 32013Element 6332580 or 4254606×5
Technic Axle and Pin Connector Angled #5 - 112.5°RedPart 32015Element 6271348 or 4227544×2
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin HolesRedPart 42003Element 6273712 or 4175442×7
Technic Beam 1 x 11 ThickRedPart 32525Element 4562805 or 4534913×1
Technic Beam 1 x 11.5 Double Bent ThickRedPart 32009Element 6271160 or 4268653×2
Technic Beam 1 x 3 ThinRedPart 6632Element 6364451 or 4107824×4
Technic Beam 1 x 9 ThickRedPart 40490Element 4645733 or 4192225×2
Technic Beam 2 x 4 L-Shape ThickRedPart 32140Element 6271827 or 4141270×7
Technic Beam 3 x 3 L-Shape ThinRedPart 32056Element 6609332 or 6271816×2
Technic Beam 3 x 5 L-Shape ThickRedPart 32526Element 4143154×1
Technic Panel Fairing # 5 Small Short, Large Hole, Side ARedPart 32527Element 4143152×2
Technic Panel Fairing # 6 Small Short, Large Hole, Side BRedPart 32528Element 4143150×2
Technic Panel Fairing # 7 Small Long, Large Hole, Side ARedPart 32534Element 4193846×2
Technic Panel Fairing # 8 Small Long, Large Hole, Side BRedPart 32535Element 4193845 or 4158886×2
Technic Panel Fairing #22 Large Short, Small Hole, Side ARedPart 44352Element 4276978 or 4205040×1
Technic Panel Fairing #23 Large Short, Small Hole, Side BRedPart 44353Element 4277113 or 4205041×1
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole]RedPart 32054Element 4140806 or 4125198×9
Dark Bluish Gray
53 pieces
Technic Axle 3 with StudDark Bluish GrayPart 6587Element 6587199 or 6129590×14
Technic Beam 1 x 3 ThickDark Bluish GrayPart 32523Element 32523199 or 4210751×3
Technic Beam 1 x 5 ThickDark Bluish GrayPart 32316Element 32316199 or 4210686×3
Technic Beam 1 x 9 ThickDark Bluish GrayPart 40490Element 4645730 or 4210757×1
Technic Link 1 x 6 without StoppersDark Bluish GrayPart 32005aElement 4629920 or 4211026×2
Technic Link Tread Wide with Two Pin HolesDark Bluish GrayPart 57518Element 4494517×28
Technic Pin 3/4Dark Bluish GrayPart 32002Element 32002199 or 42110501 spare in the box×2
Blue
12 pieces
Technic Axle Pin with Friction Ridges LengthwiseBluePart 43093Element 4309323 or 4206482×12
Pearl Light Gray
4 pieces
Hose, Ribbed 7mm D. 2L / 1.6cmPearl Light GrayPart 78c02Element 4495192 or 4275384×2
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Pearl Light GrayPart 41669Element 4284480 or 4177440×2
Trans-Medium Blue
2 pieces
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Trans-Medium BluePart 41669Element 6174477 or 4163578×2
Trans-Red
2 pieces
Technic Tooth 1 x 3 with Axle Hole [Rounded Underside]Trans-RedPart 41669Element 4163567×2
Yellow
2 pieces
Technic Shock Absorber 6.5L with Hard Spring, Tight Coil in Middle [Complete Assembly]YellowPart 76537Element 7653726 or 6027566×2
Metallic Silver
1 piece
Plate Round 1 x 1 with Solid StudMetallic SilverPart 6141Element 51809301 or 65461051 spare in the box×1
[No Color/Any Color]
1 piece
Sticker Sheet for Set 8272-1[No Color/Any Color]Part 58784Element 4501331×1
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.