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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.

Checking

42176 Porsche GT4 e-Performance

834 pieces in 165 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.

Every bag and the box. Shake out each bag, check its corners and seams, and look inside the empty box.
Inside what you have built. Small pieces lodge inside tubes, under plates and between studs. Turn the model over and look.
The last few steps. Compare each recent step with its parts callout. A piece used in the wrong place earlier leaves you one short later.
Look-alike colors. 2 parts in this set come in two colors that are easy to mix up; they are listed below.
The spare pieces. This set comes with 16 spare pieces, marked on each row of the checklist. One may be the piece you need.
The floor and your building area. Check under furniture, the chair and the edges of your building surface.

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.

Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Black ×2 Dark Bluish Gray ×2 Black is darker than Dark Bluish Gray.
Technic Pin Connector Hub with 2 Perpendicular Axles Black ×4 Dark Bluish Gray ×4 Black is darker than Dark Bluish Gray.

Piece checklist

Yellow 39 pieces

Technic Axle 3 Yellow Part 4519 Element 6130007 ×20
Technic Axle 7 Yellow Part 44294 Element 6130009 ×1
Technic Axle 9 Yellow Part 60485 Element 6130010 ×1
Technic Beam 1 x 2 Thick Yellow Part 43857 Element 4187122 ×1
Technic Beam 1 x 3 Thin Yellow Part 6632 Element 6344174 or 4107823 ×2
Technic Beam 3 x 3 L-Shape Thin Yellow Part 32056 Element 6271812 or 4112289 ×8
Technic Pin Connector Hub with 1 Pin with Friction Ridges Lengthwise [Centered Friction Ridge] Yellow Part 65487 Element 6282151 ×2
Technic Pin without Friction Ridges Lengthwise Yellow Part 3673 Element 6331822 1 spare in the box ×4

Dark Bluish Gray 32 pieces

Technic Axle 4 with Stop Dark Bluish Gray Part 87083 Element 6083620 or 4560177 ×4
Technic Axle and Pin Connector Perpendicular 3L with 2 Pin Holes Dark Bluish Gray Part 42003 Element 6273715 or 4210857 Also in Black ×2
Technic Beam 1 x 7 Thick with Alternating Holes Dark Bluish Gray Part 2391 Element 6432397 ×1
Technic Connector Beam 3 x 3 Dark Bluish Gray Part 39793 Element 6317653 ×1
Technic Pin 1/2 with Friction Dark Bluish Gray Part 89678 Element 6395635 2 spares in the box ×16
Technic Pin Connector Hub with 2 Perpendicular Axles Dark Bluish Gray Part 10197 Element 6005331 Also in Black ×4
Technic Steering Hub for Portal Axle Dark Bluish Gray Part 92909 Element 4610378 ×4

Orange 17 pieces

Technic Pin Connector Round 1L [Beam] Orange Part 18654 Element 6390380 1 spare in the box ×1
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Orange Part 65304 Element 6347790 ×12
Tile Round 1 x 1 Orange Part 98138 Element 6284582 or 6009459 1 spare in the box ×4

Reddish Brown 8 pieces

Technic Axle 3 with Stop Reddish Brown Part 24316 Element 6135494 ×8

Lime 6 pieces

Technic Axle and Pin Connector Perpendicular Lime Part 6536 Element 6261378 or 6149996 ×2
Technic Beam 1 x 3 Thick Lime Part 32523 Element 6170474 or 4265684 ×2
Technic Driving Ring Connector Smooth [2 rounded and 2 flat side walls] Lime Part 42195 Element 6335185 ×2

Trans-Clear 6 pieces

Cable, Fiber Optics, Wide 10L / 8.0cm Trans-Clear Part 40002c10 Element 6454803 1 spare in the box ×2
Cable, Fiber Optics, Wide 28L / 22.4cm Trans-Clear Part 40002c28 Element 6496831 ×2
Technic Panel Round Corner 5 x 3 x 2 Left with Black headlight Print Trans-Clear Part 2438pr0003 Element 6463210 ×1
Technic Panel Round Corner 5 x 3 x 2 Right with Black Headlight Print Trans-Clear Part 2442pr0003 Element 6565362 or 6463212 ×1

Tan 5 pieces

Technic Axle 4 with Centre Stop Tan Part 99008 Element 4666999 ×1
Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×4

Trans-Red 2 pieces

Tile Round 1 x 1 Trans-Red Part 98138 Element 6514189 or 6258607 1 spare in the box ×2

Medium Azure 1 piece

Axle Hose, Soft 16L Medium Azure Part 32202 Element 6484393 ×1

Pearl Gold 1 piece

Technic Pin Connector Round 1L [Beam] Pearl Gold Part 18654 Element 6256803 1 spare in the box ×1

[No Color/Any Color] 1 piece

Sticker Sheet for Set 42176-1 [No Color/Any Color] Part 10105332 Element 6462845 ×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.

LEGO Missing Piece Checker

42176 Porsche GT4 e-Performance

Before you call it missing

Look-alike colors in this set

Your missing list

Piece checklist

Black 356 pieces

Blue 210 pieces

Light Bluish Gray 69 pieces