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LEGO Missing Piece Checker

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.

Deluxe Train Set

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3772 Deluxe Train Set

113 pieces in 72 part and color combinations.

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.

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Piece checklist

Duplo, Quatro and Primo 110 pieces

  • Duplo Brick 2 x 2 Black Part 3437 Element 4583790 or 343726 ×2
  • Duplo Hose with Flat Silver Nozzle and Stud Holder Black Part 6425c05 ×1
  • Duplo Plate 2 x 2 with Tow Rope Holder Arms Black Part 42026 Element 4186569 or 4162964 ×1
  • Duplo Support 2 x 3 x 3 with 2 Top Studs Black Part 41969 Element 4162956 ×2
  • Duplo Train Wagon Base 4 x 8 with Light Bluish Gray Wheels and Moveable Hook Black Part 31300c03 Element 6102198 or 4589701 ×2
  • Duplo Winch Drum Narrow with White String and Black Thick Hook with Stud Case and Horizontal Bar Black Part 41169c04 ×1
  • Duplo Brick 2 x 10 Blue Part 2291 Element 4290196 or 4250489 ×2
  • Duplo Brick 2 x 4 Blue Part 3011 Element 4290075 or 301123 ×1
  • Duplo Brick 2 x 6 Blue Part 2300 Element 4290388 or 230023 ×1
  • Duplo Brick 2 x 8 Blue Part 4199 Element 4291881 or 419923 ×1
  • Duplo Plate 2 x 4 Blue Part 40666 Element 4170804 ×2
  • Duplo Train Locomotive Cabin Roof 2 x 4 Studs Blue Part 51546 Element 4261634 ×1
  • Duplo Train Locomotive Front with Silver Headlight and Diagonal Stripes Print Blue Part 51554pr0002 Element 4257794 ×1
  • Duplo Train Tipper Holder 4 x 8 (Skip Holder) Blue Part 51558 Element 6033937 or 4250070 ×1
  • Duplo Brick 2 x 2 Bright Green Part 3437 Element 4583789 or 4168579 ×1
  • Duplo Brick 2 x 4 Bright Green Part 3011 Element 4513084 or 4290085 ×1
  • Duplo Container Box 4 x 4 with Studs on Corners with Four Squares Print Bright Green Part 47423pr0011 Element 4257800 ×1
  • Duplo Plate 2 x 4 Bright Green Part 40666 Element 4170795 ×1
  • Duplo Plate 2 x 8 Bright Green Part 44524 Element 4247780 ×1
  • Duplo Plate 4 x 8 Bright Green Part 4672 Element 6048851 or 4279293 ×1
  • Duplo Train Cab Upper Section, with 'Cargo' Print Bright Green Part 51548pr0002 ×1
  • Duplo Brick 1 x 2 x 2 with No Bottom Tube, Traffic Signal Double Print Bright Light Orange Part 4066pr0151 ×1
  • Duplo Brick 2 x 4 Bright Light Orange Part 3011 Element 6537497 or 4221628 ×2
  • Duplo Crane Arm (Full Assembly) Bright Light Orange Part 55436 Element 4290734 ×1
  • Duplo Fence / Rail 1 x 6 with 5 Rails Bright Light Orange Part 2214 Element 4255184 ×1
  • Duplo Loading Chute / Silo with 2 x 4 Base Bricks Bright Light Orange Part 31025 Element 4265005 or 4255186 ×1
  • Duplo Train Track 4 x 8 Curved [Short] Dark Bluish Gray Part 6378 Element 4211015 ×18
  • Duplo Train Track 4 x 8 Straight Dark Bluish Gray Part 6377 Element 4211014 ×11
  • Duplo Train Track Switcher with Red Switch Dark Bluish Gray Part 51560 Element 4250072 ×2
  • Duplo Truck Base with Molded Engine 5 x 9 Dark Bluish Gray Part 47424 Element 6019740 or 4228456 ×1
  • Duplo Brick 2 x 2 with Apples in Crate Print Dark Orange Part 3437pr0051 Element 4271461 or 4216304 ×1
  • Duplo Brick 2 x 2 Dark Red Part 3437 Element 4541375 or 4196417 ×1
  • Duplo Brick 2 x 2 Dark Tan Part 3437 Element 4583544 or 4196360 ×2
  • Duplo Plate 4 x 8 Dark Tan Part 4672 Element 4279272 or 4255053 Also in Tan ×1
  • Duplo Brick 2 x 2 Green Part 3437 Element 6528078 or 4583552 ×1
  • Duplo Brick 2 x 2 Light Bluish Gray Part 3437 Element 4583794 or 4266228 ×2
  • Duplo Brick 2 x 4 with Trunk with 'PARIS' and 'NEW YORK' Labels Print Light Bluish Gray Part 3011pr0004 Element 4216296 ×1
  • Duplo Loading Pallet 4 x 4 Indented Side Light Brown Part 47415 Element 4255187 ×1
  • Duplo Brick 2 x 2 x 2 Medium Blue Part 31110 Element 4527243 or 4194463 ×3
  • Duplo Building Roof Support Medium Blue Part 51383 Element 4259904 ×2
  • Duplo Building Wall 1 x 8 x 6 with Door Opening Medium Blue Part 51261 Element 4253728 ×1
  • Duplo Building Wall 1 x 8 x 6 with Window Opening, Hinge on Right Medium Blue Part 51260 Element 4253724 ×1
  • Duplo Fence / Rail 1 x 6 with 5 Rails Orange Part 2214 Element 4261686 ×2
  • Duplo Plant, Flower with 1 Top Stud Orange Part 6510 Element 4224677 or 4217971 ×1
  • Duplo Telephone, with Blue Keypad and Display Print Orange Part 51289pr0001 Element 4257805 ×1
  • Duplo Truck Semi-Tractor Cab with Dark Bluish Gray Base Orange Part 48125c03 Element 4255270 ×1
  • Duplo Wheelbarrow with Thin Black Wheels Pearl Light Gray Part 2292c02 Element 4157664 ×1
  • Duplo Winch Drum Narrow with White String and Black Thin Hook with Stud Case, Fixed Pearl Light Gray Part 41169c01 Element 4495008 or 4296000 ×1
  • Duplo Brick 1 x 2 x 2 with No Bottom Tube, Traffic Signal Double Print Red Part 4066pr0151 Element 4257528 ×1
  • Duplo Brick 2 x 2 Slope 45° with Joystick and Controls Print Red Part 6474pr9992 Element 6034944 or 4259925 ×1
  • Duplo Brick 2 x 2 Slope 45° with Octan, 1, 2, 3, 4 and Gas Gauge Print Red Part 6474pr9994 Element 4168320 ×1
  • Duplo Container Box 4 x 4 with Studs on Corners with Four Squares Print Red Part 47423pr0011 ×1
  • Duplo Fence / Rail 1 x 6 with 5 Rails Red Part 2214 Element 4100712 or 221421 ×1
  • Duplo Loading Chute / Silo Sliding Door Panel / Lid Red Part 31026 Element 4494677 or 3102621 ×1
  • Duplo Roof Section 8 x 8 x 8, with Door Opening Red Part 51385 Element 4285829 or 4255060 ×1
  • Duplo Support / Column 2 x 8 x 6 Red Part 73352 Element 4255300 ×2
  • Duplo Train Cab Upper Section, with 'Cargo' Print Red Part 51548pr0002 ×1
  • Duplo Door 1 x 4 x 4 with Rounded Top and Handle - Castle Reddish Brown Part 51288 Element 4244411 ×1
  • Duplo Brick 1 x 2 x 2 with Tied Parcel and Postmark Print Tan Part 4066pr0171 Element 4213777 ×1
  • Duplo Plate 2 x 8 Tan Part 44524 Element 4183797 ×1
  • Duplo Plate 4 x 8 Tan Part 4672 Element 6288592 or 6184966 Also in Dark Tan ×1
  • Duplo Plate 8 x 8 Tan Part 51262 Element 4255190 ×1
  • Duplo Door / Window with Four Panes Square Corners White Part 2206 Element 4250146 or 220601 ×1
  • Duplo Door 1 x 4 x 4 with Four Panes White Part 2205 Element 4250141 or 220501 ×1
  • Duplo Fence / Rail 1 x 6 with 5 Rails Yellow Part 2214 Element 4100715 or 221424 ×1
  • Duplo Plate 8 x 8 Yellow Part 51262 Element 4662327 or 4249220 ×1
  • Duplo Train Cab / Tender Base with Bottom Tube and '50422' Print Yellow Part 51547pr0014 ×1
  • Duplo Train Locomotive Base with Battery Compartment, Flat Silver Wheels Yellow Part 99844 Element 4667511 or 4521592 ×1
  • Duplo Train Tipper 2 x 4 with Curved Sides (Skip) Yellow Part 51557 Element 6033934 or 4250069 ×1

Non-Buildable Figures (Duplo, Fabuland, etc) 3 pieces

  • Duplo Figure with Police Style Hat Red, with Black Legs, Blue Jacket with Tie, Blue Hands, Smile with Teeth Print (Train Conductor) Blue Part 98465pr9998 ×1
  • Duplo Figure with Construction Helmet Red, Black Legs, Safety Vest over Blue Long Sleeve Shirt Print Orange Part 47202pr0004 ×1
  • Duplo Figure with Cap Blue, Dark Blue Legs, Black Vest, Mustache Print Red Part 48842pr0003 ×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.

Request a replacement from LEGO

Buy the piece

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.

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