Universal Building Set (8050-1) is a Universal Building Set LEGO set released in 1982 with 142 pieces. Browse the parts list, minifigures, and verify loose bricks with our free scanner. Collectors browsing Universal Building Set sets use this inventory to verify loose parts, compare color variants, and read official build manuals without downloading PDFs. This set includes 41 unique part types.
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Buying checklist
Quick context before you buy this set used or verify a marketplace listing.
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Release year
1982 (44 years ago — may be retired)
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Catalog scale
142 parts listed · 41 inventory lines tracked
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Minifigures
No minifigs in inventory (brick-only or Technic set)
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Build manual
No digital manual in our catalog — check the box tab or LEGO.com
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Gray era
Pre-2004 set — may use old light/dark gray instead of bluish gray
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Shipping weight (est.)
~291 g for parts inventory (excludes box/minifig packaging)
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Before you buy used
Run the completion checker, compare photos to the inventory, and check live listings for sealed pricing
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Market value
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Parts in this set
41 parts · updating…
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Battery Box, 4.5V, 4 x 24, 3 x C-Cell with Switch [Complete Assembly]4350c02 · ×1 · Light Gray -
Electric Connector, 2 Way Male Squared Narrow Long [Complete Assembly]766c01 · ×2 · Light Gray -
Motor, 4.5V Type 2 for 2-Prong Connectors with Middle Pin6216b · ×1 · Light Gray -
Plate 1 x 23023 · ×6 · Blue -
Plate 1 x 63666 · ×8 · Blue -
Plate 2 x 63795 · ×4 · Red -
Plate 4 x 63032 · ×1 · Red -
String Cord Medium Thickness 50cm7916c50 · ×1 · Black -
Technic Axle 103737 · ×1 · Black -
Technic Axle 123708 · ×2 · Black -
Technic Axle 43705 · ×3 · Black -
Technic Axle 63706 · ×4 · Black -
Technic Axle 83707 · ×2 · Black -
Technic Axle and Pin Connector3651 · ×8 · Light Gray -
Technic Axle Pin without Friction Ridges Lengthwise3749 · ×4 · Light Gray -
Technic Brick 1 x 12 [11 Pin Holes]3895 · ×4 · Blue -
Technic Brick 1 x 16 [15 Pin Holes]3703 · ×8 · Blue -
Technic Brick 1 x 2 [1 Pin Hole]3700 · ×4 · Blue -
Technic Brick 1 x 4 [3 Pin Holes]3701 · ×2 · Blue -
Technic Brick 1 x 6 [5 Pin Holes]3894 · ×4 · Blue -
Technic Brick 1 x 8 [7 Pin Holes]3702 · ×5 · Blue -
Technic Bush3713 · ×9 · Light Gray -
Technic Gear 24 Tooth [Old Style - Three axle holes]3648a · ×2 · Light Gray -
Technic Gear 24 Tooth Crown with Flat Teeth3650a · ×1 · Light Gray -
Technic Gear 40 Tooth3649 · ×1 · Light Gray -
Technic Gear 8 Tooth3647 · ×4 · Light Gray -
Technic Gear Rack 1 x 43743 · ×1 · Light Gray -
Technic Pin with Friction Ridges Lengthwise, without Center Slots4459 · ×12 · Black -
Technic Pin without Friction Ridges Lengthwise3673 · ×11 · Light Gray -
Technic Plate 1 x 8 with Toothed Ends4442 · ×3 · Light Gray -
Technic Plate 2 x 4 [3 Holes]3709 · ×3 · Red -
Technic Plate 2 x 8 [7 Holes]3738 · ×1 · Red -
Technic Rubber Belt Medium [26mm ID] [Round Cross Section]85545 · ×2 · Black -
Technic Steering Arm4261 · ×2 · Light Gray -
Technic Steering Pulley Large3736 · ×1 · Light Gray -
Technic Universal Joint 4L [Complete Assembly]9244 · ×1 · Light Gray -
Technic Wedge Belt Wheel [aka Pulley]4185 · ×2 · Light Gray -
Tile 1 x 2 with Groove3069b · ×2 · Light Gray -
Tyre 43 x 173634 · ×4 · Black -
Wheel with Split Axle hole3482 · ×4 · Light Gray -
Wire 12V / 4.5V with Two Leads [Undetermined Length]74503 · ×1 · Light Gray