# LEGO 3800-1 — Ultimate Builders Set (2001)

Source: https://www.brickmissing.com/sets/3800-1-ultimate-builders-set
Publisher: BrickMissing (https://www.brickmissing.com) — free LEGO parts checker. Not affiliated with the LEGO Group.

## Set facts

- Set number: 3800-1
- Name: Ultimate Builders Set
- Theme: Mindstorms › 1.5
- Released: 2001
- Pieces: 322
- Distinct part + colour lots: 70
- Build difficulty: easy
- Repairability: 15.7% of this set's lots are hard to replace (11 of 70 part+colour combinations appear in three or fewer sets in the entire LEGO catalog).

## Complete parts list (70 lots, 322 pieces)

Prices are the official LEGO Pick a Brick price per individual part, where LEGO publishes one.

| Qty | Part | Colour | Part no. | LEGO element ID | LEGO price each |
| ---: | --- | --- | --- | --- | --- |
| 1 | String Cord Medium Thickness 200cm | Black | 14728c200 | 4513695 | — |
| 20 | Technic Pin with Friction Ridges Lengthwise and Center Slots | Black | 2780 | 278026 | — |
| 1 | Pneumatic Cylinder with 2 Inlets Medium (48mm) with Black Top | Trans-Clear | 2793c01 | 4144055 | — |
| 4 | Plate Special 2 x 2 with 2 Pin Holes | Light Gray | 2817 | 281702 | — |
| 2 | Technic Beam 1 x 4 Thin with Stud Connector | Light Gray | 2825 | 282502 | — |
| 1 | Technic Turntable Large Type 1 Top, 56 Tooth | Trans-Clear | 2855 | 4144287 | — |
| 1 | Technic Turntable Large Type 1 Base, 56 Tooth | Black | 2856 | 285626 | — |
| 2 | Technic Beam Triangle Thin [Type I] | Black | 2905 | 290523 | — |
| 4 | Technic Pin 3/4 | Dark Gray | 32002 | 4109854 | — |
| 2 | Technic Tread Hub | White | 32007 | 4107487 | — |
| 1 | Technic Reel 3 x 2 | Yellow | 32012 | 4120070 | — |
| 4 | Plate Special 1 x 2 with Door Rail | Light Gray | 32028 | 4109642 | — |
| 4 | Technic Axle Connector with Axle Hole | Light Gray | 32039 | 4106469 | — |
| 4 | Technic Axle Connector with Axle Hole | Black | 32039 | 3203926 | — |
| 24 | Technic Pin Long with Friction Ridges Lengthwise and Stop Bush [3 Lateral Holes, Big Pin Hole] | Black | 32054 | 3205423 | — |
| 5 | Technic Axle 2 Notched | Black | 32062 | 4109810 | €0,07 |
| 4 | Technic Axle 5 | Black | 32073 | 4114740 | — |
| 5 | Technic Bush 1/2 Smooth with Axle Hole Reduced | Tan | 32123a | 4206210 | — |
| 4 | Technic Beam 2 x 4 L-Shape Thick | Black | 32140 | 6271825 | €0,15 |
| 6 | Large Figure Throwing Disk, MindStorms Print | Black | 32171pr0062 | — | — |
| 4 | Technic Axle and Pin Connector Perpendicular 3L with Centre Pin Hole | Black | 32184 | 4128599 | — |
| 2 | Technic Axle and Pin Connector Angled #4 - 135° | Black | 32192 | 6262897 | €0,19 |
| 1 | Technic Gear 20 Tooth Bevel | Light Gray | 32198 | 4121640 | — |
| 2 | Technic Axle 5.5 with Stop [Flat Short End] | White | 32209 | 4120471 | — |
| 4 | Technic Beam 3 x 5 L-Shape with Quarter Ellipse Thin | Black | 32250 | 3225023 | — |
| 3 | Technic Gear 20 Tooth Double Bevel with Axle Hole Type 2 [X Opening] | Light Gray | 32269 | 4141455 | — |
| 3 | Technic Gear 12 Tooth Double Bevel | Light Gray | 32270 | 4125322 | — |
| 2 | Technic Beam 1 x 9 Bent (7 - 3) Thick | Trans-Neon Orange | 32271 | 4144325 | — |
| 2 | Technic Beam 1 x 9 Bent (7 - 3) Thick | Trans-Neon Green | 32271 | 4144326 | — |
| 6 | Technic Beam 1 x 15 Thick | Black | 32278 | 4542573 | €0,42 |
| 5 | Technic Beam 1 x 15 Thick | Black | 32278 | 6057799 | €0,42 |
| 4 | Technic Axle and Pin Connector Perpendicular Double | Black | 32291 | 6280394 | €0,15 |
| 8 | Technic Beam 1 x 5 Thick | Black | 32316 | 4142134 | €0,19 |
| 2 | Technic Beam 1 x 7 Bent (4 - 4) Thick | Black | 32348 | 4144300 | — |
| 4 | Technic Beam 1 x 4 Thin | Black | 32449 | 6327548 | €0,19 |
| 4 | Technic Beam 1 x 4 Thin | Black | 32449 | 3244923 | — |
| 6 | Technic Beam 1 x 3 Thick | Black | 32523 | 4509376 | €0,10 |
| 4 | Technic Beam 1 x 7 Thick | Black | 32524 | 4506043 | €0,25 |
| 2 | Technic Beam 3 x 5 L-Shape Thick | Yellow | 32526 | 4144022 | €0,24 |
| 2 | Technic Beam 3 x 5 L-Shape Thick | Black | 32526 | 4142823 | €0,24 |
| 2 | Technic Pin Connector Plate with One Hole (Single on Bottom) | Black | 32529 | 4144023 | — |
| 6 | Technic Pin Connector Plate 1 x 2 x 1 2/3 [Two Holes On Top] | Black | 32530 | 4144024 | €0,13 |
| 2 | Technic Brick 4 x 6 with 2 x 4 Opening | Trans-Clear | 32531 | 4144160 | — |
| 2 | Technic Brick 6 x 8 with 4 x 6 Opening | Trans-Clear | 32532 | 4144161 | — |
| 4 | Tyre 15 x 6 Offset Tread Small | Black | 3641 | 364126 | — |
| 4 | Technic Brick 1 x 8 [7 Pin Holes] | Black | 3702 | 370226 | €0,36 |
| 1 | Technic Axle 10 | Black | 3737 | 373726 | €0,25 |
| 4 | Technic Gear Rack 1 x 4 | Light Gray | 3743 | 374302 | — |
| 6 | Technic Axle Pin without Friction Ridges Lengthwise | Light Gray | 3749 | 374902 | — |
| 2 | Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) | White | 4032a | 403201 | €0,06 |
| 1 | CD-Rom, Ultimate Builders Set (Set 3800) | Unknown | 4153273 | — | — |
| 5 | Technic Axle 3 | Black | 4519 | 451926 | — |
| 1 | Hose, Pneumatic 4mm D. 195L | Trans-Clear | 5102c195 | — | — |
| 1 | Wire with Brick 2 x 2 x 2/3 Pair, 69L | Black | 5306bc069 | 75782 | — |
| 4 | Arm Piece with Pin, 2 Fingers | Black | 6048a | 604826 | — |
| 36 | Plate Round 1 x 1 with Solid Stud | Light Gray | 6141 | 614102 | — |
| 6 | Technic Axle and Pin Connector Perpendicular | Black | 6536 | 6261371 | €0,10 |
| 2 | Technic Axle Connector Ridged [with x Hole x Orientation] | Black | 6538b | 4107802 | — |
| 14 | Technic Brick 1 x 1 with Pin Hole | Black | 6541 | 654126 | €0,07 |
| 26 | Technic Pin Long with Friction Ridges Lengthwise, 2 Center Slots | Black | 6558 | 655826 | — |
| 4 | Technic Axle 3 with Stud | Dark Gray | 6587 | 4113884 | — |
| 1 | Technic Gearbox 2 x 4 x 3 1/3 | Trans-Clear | 6588 | 6507887 | €1,66 |
| 2 | Technic Beam 1 x 3 Thin | Light Gray | 6632 | 4107825 | — |
| 2 | Technic Beam 1 x 3 Thin | Black | 6632 | 6344176 | €0,25 |
| 4 | Technic Beam 1 x 3 Thin | Black | 6632 | 6331723 | €0,25 |
| 1 | Motor, 9V Mini [Old Style] | Light Gray | 71427c01 | 4107786 | — |
| 4 | Rubber Band Small 13mm (Square Cross Section) | Black | 71509 | 4107153 | — |
| 1 | Pneumatic Pump 1 x 5.5 | Yellow | 74982 | 4563137 | — |
| 1 | Pneumatic Switch with Top Studs | Light Gray | 75215 | 75215 | — |
| 4 | Technic Pin Connector Round [No Slot] | Black | 75535 | 75619 | — |

## Notes

- Track which of these parts you own and see what is missing: https://www.brickmissing.com/sets/3800-1-ultimate-builders-set
- Inventory data is based on official LEGO inventories via the Rebrickable catalog, updated daily.
- Part images, minifigure lists and related sets are on the set page: https://www.brickmissing.com/sets/3800-1-ultimate-builders-set