Free tool

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

9398 4 x 4 Crawler

1,327 pieces in 158 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 22 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 Beam 1 x 13 Thick Black ×1 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.
Technic Beam 1 x 5 Thick Black ×1 Dark Bluish Gray ×1 Black is darker than Dark Bluish Gray.

Piece checklist

Blue 211 pieces

Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×108
Technic Beam 1 x 2 Thin Blue Part 41677 Element 6360123 or 4186834 ×3
Technic Pin 1/2 without Friction Ridges Blue Part 4274 Element 4143005 1 spare in the box ×4
Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots Blue Part 6558 Element 4514553 ×95
Tile Special 1 x 2 Grille with Bottom Groove Blue Part 2412b Element 241223 ×1

Tan 33 pieces

Technic Axle 4 with Centre Stop Tan Part 99008 Element 4666999 ×8
Technic Axle Pin without Friction Ridges Lengthwise Tan Part 3749 Element 4666579 or 4186017 ×3
Technic Gear 12 Tooth Bevel Tan Part 6589 Element 4565452 or 4514556 1 spare in the box ×6
Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening] Tan Part 32269 Element 4514555 ×12
Technic Pin Long without Friction Ridges Tan Part 32556 ×4

Orange 19 pieces

Technic Axle and Pin Connector Angled #3 - 157.5° Orange Part 32016 Element 6366185 or 6251180 ×4
Technic Beam 1 x 13 Thick Orange Part 41239 Element 4629802 or 4164424 ×2
Technic Beam 1 x 7 Bent (4 - 4) Thick Orange Part 32348 Element 6278133 or 6102616 ×4
Technic Beam 2 x 4 L-Shape Thick Orange Part 32140 Element 6271832 or 4508664 ×2
Technic Beam 3 x 5 L-Shape Thick Orange Part 32526 Element 6143015 or 4626639 ×2
Technic Panel Curved 11 x 3 with 2 Pin Holes through Panel Surface Orange Part 62531 Element 4580022 ×2
Technic Panel Fairing #1 Small Smooth Short, Side A Orange Part 87080 Element 6370445 or 6303434 ×1
Technic Panel Fairing #2 Small Smooth Short, Side B Orange Part 87086 Element 6370444 or 6303436 ×1
Tile Special 1 x 2 Grille with Bottom Groove Orange Part 2412b Element 4125254 or 3933106 ×1

Trans-Clear 6 pieces

Plate Round 1 x 1 with Solid Stud Trans-Clear Part 6141 Element 6514052 or 6240030 1 spare in the box ×4
Plate Round 2 x 2 with Rounded Bottom [Boat Stud] Trans-Clear Part 2654 Element 6581772 or 6163901 ×2

Yellow 6 pieces

Technic Beam 1 x 7 Thick Yellow Part 32524 Element 4495934 or 4187082 ×2
Technic Shock Absorber 9.5L with Extra Hard Spring Yellow Part 95292c01 Element 6083113 or 4619319 ×4

Trans-Orange 2 pieces

Plate Round 1 x 1 with Solid Stud Trans-Orange Part 6141 Element 6514059 or 6240227 1 spare in the box ×2

Trans-Red 2 pieces

Plate Round 1 x 1 with Solid Stud Trans-Red Part 6141 Element 6514051 or 6208450 1 spare in the box ×2

Dark Tan 1 piece

Technic Axle 3 with Stud Dark Tan Part 6587 Element 6031821 or 6013821 ×1

[No Color/Any Color] 1 piece

Sticker Sheet for Set 9398-1 [No Color/Any Color] Part 10772 Element 6006511 ×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

9398 4 x 4 Crawler

Before you call it missing

Look-alike colors in this set

Your missing list

Piece checklist

Black 398 pieces