LEGO 9665
Mechanical Engineering Set

LEGO 9665 Mechanical Engineering Set box image
Set number
9665
Theme
Educational and Dacta
Pieces
322 pcs
Year
2001
Used & parts
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“Mechanical Engineering Set” is LEGO® “Educational and Dacta” theme set number 9665. Released in 2001, it has 322 pieces. With Re:GO you can automatically work out what percentage of this set you can build from the LEGO parts you already own, along with the missing parts and an estimated cost. Use the links below to compare prices on Amazon, Rakuten, Yahoo! Shopping, Mercari and Yahoo! Auctions, and find the best deal on new, used, or individual parts.

Part breakdown 84 types

Color split (most first)
Light Gray×144
Black×70
Blue×52
Yellow×29
Dark Gray×11
Red×8
Green×4
Trans-Clear×3
White×1
Main parts (most used first)
2780 Technic Pin with Friction Ridges Lengthwise and Center Slots
Black · ×24
3713 Technic Bush
Light Gray · ×24
3673 Technic Pin without Friction Ridges Lengthwise
Light Gray · ×18
32123a Technic Bush 1/2 Smooth with Axle Hole Reduced
Light Gray · ×12
3749 Technic Axle Pin without Friction Ridges Lengthwise
Light Gray · ×12
3482 Wheel with Split Axle hole
Yellow · ×10
70012 Rubber Band Medium (Square Cross Section) Thin Cut
Black · ×9
3001 Brick 2 x 4
Blue · ×8
32002 Technic Pin 3/4
Dark Gray · ×8
3700 Technic Brick 1 x 2 [1 Pin Hole]
Blue · ×8
3709 Technic Plate 2 x 4 [3 Holes]
Light Gray · ×8
3023 Plate 1 x 2
Yellow · ×7
3703 Technic Brick 1 x 16 [15 Pin Holes]
Blue · ×6
85544 Technic Rubber Belt Medium [24mm ID] [Round Cross Section]
Red · ×5
85545 Technic Rubber Belt Medium [26mm ID] [Round Cross Section]
Blue · ×5
85546 Technic Rubber Belt Large [33mm ID] [Round Cross Section]
Yellow · ×5
2346 Tyre 30 x 10.5 Offset Tread
Black · ×4
3023 Plate 1 x 2
Light Gray · ×4
32028 Plate Special 1 x 2 with Door Rail
Light Gray · ×4
32062 Technic Axle 2 Notched
Black · ×4
3460 Plate 1 x 8
Light Gray · ×4
3701 Technic Brick 1 x 4 [3 Pin Holes]
Blue · ×4
3702 Technic Brick 1 x 8 [7 Pin Holes]
Blue · ×4
3705 Technic Axle 4
Black · ×4

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