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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.

FX Star Patroller

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6931 FX Star Patroller

210 pieces in 92 part and color combinations, plus 2 minifigures.

LEGO counts 239 pieces. This inventory comes from a separate parts catalog and lists 227, including the 17 parts inside the minifigures; the two do not always count the same elements, so their totals differ. Spare parts are counted in neither figure.

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.

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Piece checklist

Light Gray 89 pieces

  • Bar 1 x 3 [Clip / Anti-Stud] Light Gray Part 4735 Element 4141579 or 473552 ×4
  • Brick 1 x 2 Light Gray Part 3004 Element 300402 ×1
  • Brick 1 x 2 with Yellow Left Arrow with Black Border Print Light Gray Part 3004pr9985 ×2
  • Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support Light Gray Part 3010a ×2
  • Brick 2 x 2 without Inside Ridges Light Gray Part 3003a ×1
  • Brick 2 x 4 Light Gray Part 3001 Element 4116259 or 300102 ×1
  • Brick Sloped 45° 2 x 2 with 12 Buttons, 3 Red Lamps, Black Panel Print Light Gray Part 3039pr9996 ×3
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Light Gray Part 3747a Element 4109695 ×2
  • Brick Special 1 x 2 x 2/3 with Studs on Sides Light Gray Part 4595 Element 459502 ×4
  • Dish 2 x 2 Inverted [Radar] Light Gray Part 4740 Element 474002 ×2
  • Engine - Smooth, Small 1 x 2 Side Plate [With Axle Holders] Light Gray Part 3475b Element 4143689 or 4114245 ×2
  • Hinge Vehicle Roof 4 x 4 Light Gray Part 4213 Element 4256455 or 421302 ×2
  • Hinge Vehicle Roof Holder 1 x 4 Light Gray Part 4315 Element 431502 ×1
  • Plate 1 x 2 Light Gray Part 3023 Element 302302 ×10
  • Plate 1 x 4 Light Gray Part 3710 Element 371002 ×5
  • Plate 1 x 6 Light Gray Part 3666 Element 366602 ×2
  • Plate 2 x 2 Light Gray Part 3022 Element 302202 ×2
  • Plate 2 x 3 Light Gray Part 3021 Element 302102 ×7
  • Plate 2 x 4 Light Gray Part 3020 Element 302002 ×2
  • Plate 2 x 6 Light Gray Part 3795 Element 379502 ×1
  • Plate 4 x 6 Light Gray Part 3032 Element 303202 ×1
  • Plate 6 x 8 Light Gray Part 3036 Element 303652 or 303602 ×1
  • Plate Special 1 x 2 with Handles [Flat Ends / Low Attachment] Light Gray Part 3839b Element 383902 ×2
  • Plate Special 2 x 2 with Wheel Holders Light Gray Part 4600 Element 460002 ×3
  • Tail 4 x 2 x 2, Rocket Light Gray Part 4746 ×2
  • Technic Brick 1 x 2 [1 Pin Hole] Light Gray Part 3700 Element 370002 ×1
  • Technic Pin without Friction Ridges Lengthwise Light Gray Part 3673 Element 4184166 or 367302 ×1
  • Tile 1 x 2 with Arrow Long Yellow with Black Border Print Light Gray Part 3069bpr0023 ×4
  • Tile 1 x 2 with Groove Light Gray Part 3069b Element 306902 ×2
  • Tile 1 x 2 with Space Computer Print Light Gray Part 3069bpr0039 Element 4163557 ×1
  • Tile 2 x 2 with Arrow Thin Yellow with Black Border Print Light Gray Part 3068bpr0032 ×2
  • Wedge Plate 4 x 4 Wing Left Light Gray Part 3936 Element 4248128 or 4248125 ×1
  • Wedge Plate 4 x 4 Wing Right Light Gray Part 3935 Element 4248118 or 393502 ×1
  • Wedge Plate 8 x 4 Wing Right without Stud Notch Light Gray Part 3934a ×1
  • Wedge, Plate 8 x 4 Wing Left without Underside Stud Notch Light Gray Part 3933a ×1
  • Wedge, Plate 8 x 8 with 4 x 4 Cutout Light Gray Part 4475 ×3
  • Wheel 8 x 6 Light Gray Part 4624 Element 462402 ×6

Blue 70 pieces

  • Brick 1 x 1 Blue Part 3005 Element 300523 ×10
  • Brick 1 x 3 Blue Part 3622 Element 362223 ×4
  • Brick 1 x 4 with Bottom Tubes, Lowered Center Cross Support Blue Part 3010a ×1
  • Brick 1 x 4 with Yellow Left Arrow and Black Border Print Blue Part 3010pr9961 ×2
  • Brick 1 x 6 with Bottom Tubes and 2 Lowered Cross Supports Blue Part 3009b ×4
  • Brick 1 x 8 with Bottom Tubes and 3 Lowered Cross Supports Blue Part 3008b ×2
  • Brick 2 x 10 Blue Part 3006 Element 4615600 or 300623 ×1
  • Brick Sloped 33° 3 x 1 Blue Part 4286 Element 428623 ×2
  • Brick Sloped 33° 3 x 2 Blue Part 3298 Element 6294307 or 6141996 ×1
  • Brick Sloped 45° 2 x 1 with Bottom pin, with Orange Microphone Print Blue Part 3040bpr0009 ×2
  • Brick Sloped 45° 2 x 2 Blue Part 3039 Element 303923 ×1
  • Brick Sloped 45° 2 x 2 with Black Grill Print Blue Part 3039pr0009 ×2
  • Brick Sloped Inverted 33° 3 x 2, No Connections between Studs, Ovoid Bottom Pin Blue Part 3747a Element 4500460 or 374723 ×1
  • Brick Sloped Inverted 45° 2 x 1 Blue Part 3665 Element 366523 ×2
  • Brick Sloped Inverted 45° 2 x 2 [Ovoid Bottom Pin, Small Stud Holes] Blue Part 3660b ×2
  • Brick Special 1 x 1 with Headlight Blue Part 4070 Element 407023 ×2
  • Cone 1 x 1 [No Top Groove] Blue Part 4589 Element 4520957 or 458923 ×2
  • Hinge Vehicle Roof 4 x 4 Blue Part 4213 Element 4240387 or 421323 ×1
  • Hinge Vehicle Roof Holder 1 x 4 Blue Part 4315 Element 4256388 or 4167102 ×3
  • Lever Small Base with Light Gray Lever Blue Part 298c03 Element 73592 ×1
  • Minifig Neckwear Jet Pack with Front Stud Blue Part 4736 ×1
  • Plate 1 x 1 Blue Part 3024 Element 302423 ×2
  • Plate 1 x 4 Blue Part 3710 Element 371023 ×6
  • Plate 2 x 10 Blue Part 3832 Element 383223 ×2
  • Plate 2 x 4 Blue Part 3020 Element 4240375 or 302023 ×1
  • Plate 4 x 6 Blue Part 3032 Element 303223 ×1
  • Plate Special 1 x 2 with 1 Stud without Groove (Jumper) Blue Part 3794a ×2
  • Support 2 x 4 x 5 Stanchion Inclined [5mm wide posts] Blue Part 4476b Element 6469896 or 4142127 ×1
  • Technic Brick 1 x 2 [1 Pin Hole] Blue Part 3700 Element 370023 ×1
  • Tile 1 x 2 with Arrow Long Yellow with Black Border Print Blue Part 3069bpr0023 ×2
  • Tile 1 x 2 with Groove Blue Part 3069b Element 306923 ×3
  • Tile 2 x 2 with Arrow Thin Yellow with Black Border Print Blue Part 3068bpr0032 ×2

Black 32 pieces

  • Bracket 8 x 2 x 1 1/3 Black Part 4732 Element 473226 ×1
  • Brick Round 2 x 2 x 2 with Axle Hole and Fins Black Part 4591 Element 459126 ×2
  • Brick Special 1 x 1 with 3 Speakers / Loudspeakers / Space Positioning Rockets Black Part 3963 Element 4200791 or 396326 ×2
  • Cone 1 x 1 [No Top Groove] Black Part 4589 Element 4518219 or 458926 ×4
  • Engine, Strakes, 2 x 2 Thin Top Plate Black Part 4229 Element 4552040 or 4163480 ×4
  • Flexible Hose 8.5L with Tabless Ends (Ends same color as Tube) Black Part 73590c01a ×4
  • Lever Small Base with Black Lever Black Part 298c02 Element 73587 ×2
  • Plate 1 x 2 Black Part 3023 Element 302326 ×2
  • Plate 2 x 3 Black Part 3021 Element 302126 ×1
  • Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) Black Part 4032a Element 403226 ×2
  • Tile 1 x 2 with Groove Black Part 3069b Element 306926 ×1
  • Tile 2 x 2 with Groove Black Part 3068b Element 306826 ×1
  • Tyre 15 x 6 Offset Tread Small Black Part 3641 Element 4501046 or 364126 ×6

Trans-Red 10 pieces

  • Antenna 1 x 4 with Rounded Top Trans-Red Part 3957a Element 6065498 or 4106520 ×2
  • Brick Round 1 x 1 with Fins, Open Stud Trans-Red Part 4588 Element 458841 ×2
  • Cone 1 x 1 [No Top Groove] Trans-Red Part 4589 Element 618841 ×4
  • Dish 2 x 2 Inverted [Radar] Trans-Red Part 4740 Element 6580377 or 6245303 ×2

Trans-Dark Blue 4 pieces

  • Dish 2 x 2 Inverted [Radar] Trans-Dark Blue Part 4740 Element 6580383 or 6398233 ×2
  • Panel 1 x 4 x 3 [Solid Studs] Trans-Dark Blue Part 4215a Element 3000743 or 624043 ×1
  • Windscreen 6 x 4 x 2 Canopy Trans-Dark Blue Part 4474 Element 3006643 ×1

Trans-Yellow 4 pieces

  • Brick 1 x 1 Trans-Yellow Part 3005 Element 6514213 or 6277483 ×2
  • Cone 1 x 1 [No Top Groove] Trans-Yellow Part 4589 Element 618844 ×2

Yellow 1 piece

  • Plate 1 x 2 Yellow Part 3023 Element 302324 ×1

Minifigures 2 figures

  • Classic Spaceman, Yellow with Airtanks (3842b Helmet) Minifigure, checked as a whole figure ×1
  • Classic Space Droid - Black, Hinge Base Trans-Yellow Eyes Minifigure, checked as a whole figure ×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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