Missing Piece Checker: 42150 Monster Jam Monster Mutt Dalmatian

Checking

42150 Monster Jam Monster Mutt Dalmatian

244 pieces in 64 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. Compare each color with the step's parts callout, especially White against Trans-Clear.
The spare pieces. This set comes with 6 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.

Piece checklist

Technic Pins 102 pieces

Technic Axle Pin 3L with Friction Ridges Lengthwise and 2L Axle Black Part 18651 Element 6089119 ×2
Technic Pin with Friction Ridges Lengthwise with No Center Slots Black Part 61332 Element 6279875 1 spare in the box ×45
Technic Axle Pin with Friction Ridges Lengthwise Blue Part 43093 Element 4309323 or 4206482 ×24
Technic Pin Long with Friction Ridges Lengthwise, 1 Center Slot Blue Part 42924 Element 6299413 ×18
Technic Axle Pin 3L with Friction Ridges Lengthwise and 1L Axle Dark Bluish Gray Part 11214 Element 6015356 ×5
Technic Pin Long 3l with Stop and Hole Light Bluish Gray Part 77765 Element 6338962 ×1
Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [2 Lateral Holes, Small Pin Hole] Light Bluish Gray Part 65304 Element 6321747 ×3
Technic Pin without Friction Ridges Lengthwise Light Bluish Gray Part 3673 Element 4211807 or 3673194 1 spare in the box ×2
Technic Pin 3/4 Tan Part 32002 Element 6663097 or 6013938 1 spare in the box ×2

Technic Axles 18 pieces

Technic Axle 12 Black Part 3708 Element 370826 ×2
Technic Axle 4 Black Part 3705 Element 370526 ×1
Technic Axle 3 Light Bluish Gray Part 4519 Element 4211815 ×1
Technic Axle 7 Light Bluish Gray Part 44294 Element 44294194 or 4211805 ×1
Technic Axle 2 Notched Red Part 32062 Element 4142865 ×9
Technic Axle 5 Yellow Part 32073 Element 6130008 ×4

Technic Bushes 10 pieces

Technic Bush Light Bluish Gray Part 3713 Element 6275844 or 6271817 1 spare in the box ×5
Technic Bush 1/2 Smooth with Axle Hole Semi-Reduced Light Bluish Gray Part 32123b Element 6271165 or 4211573 1 spare in the box ×5

Wheels and Tyres 8 pieces

Tyre 56 x 26 Balloon Black Part 55976 Element 6495636 or 4297209 ×4
Wheel 30.4 x 20 without Pinholes, with Reinforced Rim Red Part 56145 Element 6414466 or 6143426 ×4

Technic Special 3 pieces

Technic Tooth 1 x 3 with Axle Hole [Hollow Underside] Black Part 48267 Element 6288220 ×2
Technic Disc 3 x 3 Light Bluish Gray Part 2723 Element 4667578 ×1

Plates Special 2 pieces

Plate Special 2 x 2 with 2 Pin Holes Red Part 2817 Element 281721 ×1
Plate Special 3 x 2 with Rounded End, Hole Red Part 3176 Element 4188189 or 317621 ×1

Mechanical 1 piece

Pullback Motor 6 x 3 x 5 Dark Bluish Gray Part 12799 Element 6143751 or 6024100 ×1

Plates 1 piece

Plate 1 x 2 Red Part 3023 Element 302321 ×1

Stickers 1 piece

Sticker Sheet for Set 42150-1 [No Color/Any Color] Part 10101052 Element 6415917 ×1

Tubes and Hoses 1 piece

Hose, Ribbed 7mm D. 9L / 7.2cm Black Part 78c09 Element 6443871 or 6420612 ×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

42150 Monster Jam Monster Mutt Dalmatian

Before you call it missing

Your missing list