How accurate is the brick'em scanner?

brick'em is trained on 18,600+ minifigures using BrickLink's complete catalog. You get the exact BrickLink ID, name, and market price for every figure scanned.

Do I need a credit card to start?

No. Start your 14-day free trial with no payment due today. Cancel anytime during the trial and you won't be charged.

What platforms can I export to?

Whatnot, eBay, BrickLink, Shopify, BrickStore, and generic CSV. Each export is formatted specifically for that platform so you can bulk upload immediately.

Is brick'em just for minifigures?

No. brick'em identifies both minifigures and individual parts. The parts scanner identifies pieces by color and looks up prices per variant.

Can I cancel anytime?

Yes. Cancel or downgrade from your settings page. No contracts, no cancellation fees, no questions asked.

I already have a system that works. Why switch?

If your current process handles 200+ figures a week without eating your weekends, keep it. But if you're spending hours on manual lookups, brick'em does the same work in minutes. Most sellers try the 14-day free trial and never go back.

Mechanical Engineering Set

9665-1·LEGO·2001·84 parts

Used Avg

$230.24

New Avg

$230.24

Showing used price

Add to your inventory Scan the minifigs

About Mechanical Engineering Set

Mechanical Engineering Set (9665-1) is a LEGO LEGO set from 2001 valued at $230.24 on BrickLink. It contains 84 cataloged parts. This set has been retired and is only available on the secondary market.

Seller notes

This is a vintage set (2001). Condition of the box and instructions significantly affects value. A complete set with original box and instructions can sell for well above the average.

Parts (84)

Tire 30 x 10.5 Offset Tread

×4

Tile 1 x 4

×2

Technic, Pin with Short Friction Ridges

×24

Tire Technic Wedge Belt Wheel

×2

Technic, Liftarm, Modified Stud Connector Thin 1 x 4

×2

Electric 9V Battery Box 4 x 14 x 4 with Red Buttons and Contact Plate with Dark Gray Base (2846 / 2847c00)

Electric, Motor 9V Micromotor Pulley

×2

Brick 2 x 4

×8

Plate 2 x 2

×2

Plate 1 x 2

×7

Plate 1 x 2

×4

Plate 6 x 8

Tile 1 x 2

×2

Technic, Pin 3/4

×9

Technic, Liftarm Thin 1 x 5

×2

Plate, Modified 1 x 2 with Door Rail

×4

Technic, Axle 2L Notched

×4

Technic, Axle 5L

×2

Technic, Gear Rack 1 x 14 with Holes

×2

Technic, Gear 20 Tooth Double Bevel

×2

Technic, Gear 12 Tooth Double Bevel

×2

Plate 1 x 8

×4

Wheel with Split Axle Hole

×10

Tire 24mm D. x 8mm Offset Tread - Interior Ridges

×2

Tire 17 x 43

×2

Technic, Gear 8 Tooth

×3

Technic, Gear 24 Tooth with 1 Axle Hole

×2

Technic, Gear 40 Tooth

×2

Technic, Gear 24 Tooth Crown - Reinforced

×2

Technic, Pin without Friction Ridges

×18

Technic, Brick 1 x 2 with Hole

×8

Technic, Brick 1 x 4 with Holes

×4

Technic, Brick 1 x 8 with Holes

×4

Technic, Brick 1 x 16 with Holes

×6

Technic, Axle 4L

×4

Technic, Axle 6L

×2

Technic, Axle 8L

×2

Technic, Axle 12L

×2

Technic, Plate 2 x 4 with 3 Holes

×8

Plate 1 x 4

×4

Technic Bush

×25

Technic, Steering Pulley Large

Technic, Axle 10L

×2

Technic, Plate 2 x 8 with 7 Holes

×4

Technic, Gear Rack 1 x 4

×2

Technic, Axle 1L with Pin without Friction Ridges with Round Hole

×12

Plate 2 x 6

×2

Technic, Brick 1 x 6 with Holes

×4

Technic, Brick 1 x 12 with Holes

×4

Brick, Round 2 x 2 with Axle Hole

×2

Technic, Gear 16 Tooth - Axle Hole with Open Sides

×2

Dacta Sorting Tray - 40 Compartment - Set 9665 (Fits with bin01)

Tile 1 x 8

×2

Technic Wedge Belt Wheel (Pulley)

×2

Technic Bush 1/2 Smooth

×14

Technic, Pin 1/2 without Friction Ridges

×5

Plate 1 x 10

×4

Technic, Axle 3L

×2

Pneumatic Switch with Top Studs

Technic, Gear Worm Screw, Long

×2

Hose, Pneumatic 4mm D. 20L / 16.0cm

Hose, Pneumatic 4mm D. 26L / 20.8cm

Electric, Wire with Brick 2 x 2 x 2/3 Ends 15L

Electric, Wire with Brick 2 x 2 x 2/3 Ends 69L

×2

Technic, Gear 24 Tooth Clutch

Technic, Link 1 x 11

×4

Technic, Axle Connector 2L (Ridged with + Hole + Orientation)

×4

Electric Pole Reverser / Polarity Switch with Center Part

Technic, Gear Differential 24-16 Tooth

Technic Cam

×2

Technic, Axle 3L with Stud

×2

Technic, Gearbox 2 x 4 x 3 1/3

Technic, Gear 12 Tooth Bevel

×4

Dacta Storage Bin Lid (Fits with bin01 and bin03)

Electric, Motor 9V Mini-Motor, Heavier Weight

Dacta Storage Bin Small/Medium

Rubber Band Medium (Square Cross Section) Thin Cut

×11

Pneumatic Cylinder with 2 Inlets Small (32mm)

Pneumatic Pump Small (5.5L)

×2

Rubber Belt Medium (Round Cross Section) - Approx. 3 x 3

×6

String, Cord Thin 500cm

Rubber Belt Large (Round Cross Section) - Approx. 3 1/4 x 3 1/4

×6

Rubber Belt Extra Large (Round Cross Section) - Approx. 4 1/8 x 4 1/8

×6

Common questions about Mechanical Engineering Set

How much is LEGO Mechanical Engineering Set (9665-1) worth?

Mechanical Engineering Set sells for an average of $230.24 used on BrickLink based on 6 months of completed sales. As a retired set, prices tend to hold steady or appreciate over time, especially for complete sets with original packaging. Actual prices vary with completeness — missing minifigures or key parts will lower the value.

Is LEGO Mechanical Engineering Set (9665-1) retired?

Yes, Mechanical Engineering Set was released in 2001 and has been retired from retail for several years. Retired LEGO sets are only available on the secondary market through BrickLink, eBay, or other resale platforms. At its current price point, it has appreciated since retirement.

How do I check if my Mechanical Engineering Set set is complete?

Use the parts list on this page to check every piece. For the minifigures specifically, you can use the brick'em scanner to identify each figure from a photo and confirm it matches what should be in this set. Missing pieces can be individually sourced on BrickLink.

Explore more

All LEGO sets LEGO minifigures Most valuable LEGO figs Free scanner