| Image | Item No. | Description |
| 8445-1 (Inv) | Indy Storm 447 Parts, 1999 Catalog: Sets: Technic: Model: Race |
| 9707-1 (Inv) | Intelligent House Building Set (Control Lab) 155 Parts, 4 Gear, 1996 Catalog: Sets: Educational & Dacta: Technic: Control Lab |
| 1093-1 (Inv) | Interface A 3 Parts, 1 Book, 1986 Catalog: Sets: Educational & Dacta: Technic: Supplemental |
| 9750-1 (Inv) | Interface A (LEGO Interface Box & Transformer) 3 Parts, 1 Book, 1986 Catalog: Sets: Educational & Dacta: Technic: Supplemental |
| 9767-1 | Interface Card and Cable for TC Logo - Apple IIe and Apple IIGS 1987 Catalog: Sets: Educational & Dacta: Technic: Supplemental |
| 9771-1 (Inv) | Interface Card and Cable for TC Logo - IBM compatible 2 Parts, 1 Book, 1987 Catalog: Sets: Educational & Dacta: Technic: Supplemental |
| 9617-1 (Inv) | Introducing Air Power Set (Pneumatics I: Introduction to Air Power Set) 89 Parts, 5 Books, 4 Gear, 1997 Catalog: Sets: Educational & Dacta: Technic |
| 820096-1 (Inv) | Invent America! Exploration Packet 34 Parts, 2 Books, 1 Gear, 1990 Catalog: Sets: Educational & Dacta: Technic |
| 8011-1 (Inv) | Jango Fett 429 Parts, 2002 Catalog: Sets: Technic: Star Wars: Star Wars Episode 2 |
| 42122-1 (Inv) | Jeep Wrangler 665 Parts, 2021 Catalog: Sets: Technic: Model: Off-Road |
| 8504-1 (Inv) | Jet / Judge 42 Parts, 2 Gear, 1999 Catalog: Sets: Technic: Throwbot / Slizer |
| 9394-1 (Inv) | Jet Plane 499 Parts, 2012 Catalog: Sets: Technic: Model: Airport |
| 8444-1 (Inv) | Jet Wasp 309 Parts, 1999 Catalog: Sets: Technic: Model: Airport |
| 42218-1 (Inv) | John Deere 1470H Wheeled Harvester 117 Parts, 2026 Catalog: Sets: Technic: Model: Farm |
| 42157-1 (Inv) | John Deere 948L-II Skidder 1492 Parts, 2023 Catalog: Sets: Technic: Model: Farm |
| 42136-1 (Inv) | John Deere 9620R 4WD Tractor 390 Parts, 2022 Catalog: Sets: Technic: Model: Farm |
| 42168-1 (Inv) | John Deere 9700 Forage Harvester 559 Parts, 2024 Catalog: Sets: Technic: Model: Farm |
| kabrobo-1 (Inv) | Kabaya RoboRider 4-Pack 4 Sets, 2000 Catalog: Sets: Technic: RoboRiders |
| kabtec-1 (Inv) | Kabaya Technic Vehicle 4-Pack 4 Sets, 1999 Catalog: Sets: Technic: Model |
| 42170-1 (Inv) | Kawasaki Ninja H2R Motorcycle 643 Parts, 2024 Catalog: Sets: Technic: Model: Riding Cycle |
| 42173-1 (Inv) | Koenigsegg Jesko Absolut Gray Hypercar 801 Parts, 2024 Catalog: Sets: Technic: Model: Race |
| 42184-1 (Inv) | Koenigsegg Jesko Absolut White Hypercar 801 Parts, 2024 Catalog: Sets: Technic: Model: Race |
| 42161-1 (Inv) | Lamborghini Huracán Tecnica 806 Parts, 2023 Catalog: Sets: Technic: Model: Race |
| 42196-1 (Inv) | Lamborghini Huracán Tecnica Orange 806 Parts, 2024 Catalog: Sets: Technic: Model: Race |
| 42214-1 (Inv) | Lamborghini Revuelto 1135 Parts, 1 Gear, 2025 Catalog: Sets: Technic: Model: Race |
| 42115-1 (Inv) | Lamborghini Sián (Sian) FKP 37 3696 Parts, 2020 Catalog: Sets: Technic: Model: Race |
| 42110-1 (Inv) | Land Rover Defender 2573 Parts, 2019 Catalog: Sets: Technic: Model: Off-Road |
| 5235-1 (Inv) | Large Beams with Holes 10 Parts, 1993 Catalog: Sets: Service Packs: Technic |
| 1326-1 (Inv) | Large Cross Axles 28 Parts, 1985 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 9966-1 (Inv) | Large Gear Wheels 16 Parts, 1994 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 1319-1 (Inv) | Large Gear Wheels 22 Parts, 1985 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 5252-1 (Inv) | Large Shock Absorbers 2 Parts, 1993 Catalog: Sets: Service Packs: Technic |
| 5285-1 (Inv) | Large Shock Absorbers 2 Parts, 1994 Catalog: Sets: Service Packs: Technic |
| 5003107-1 (Inv) | Large Tires with Hubs 4 Parts Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 9876-1 (Inv) | Large Turntables 2 Parts, 1992 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 8510-1 (Inv) | Lava 35 Parts, 2000 Catalog: Sets: Technic: RoboRiders |
| 1290-1 (Inv) | Lava Buggy 35 Parts, 2000 Catalog: Sets: Technic: RoboRiders |
| 970039-1 (Inv) | Lever Arm (Pack of 50) 50 Parts, 2002 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 5003106-1 (Inv) | Lever Arms 50 Parts Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 9642-1 (Inv) | Lever Classroom Pack (Levers Class Pack) 12 Sets, 1 Book, 1994 Catalog: Sets: Educational & Dacta: Technic |
| 924-2 (Inv) | Lever Set with Teacher Guide 1 Set, 1 Book, 1993 Catalog: Sets: Educational & Dacta: Technic |
| 5003116-1 (Inv) | Levers and Half Beams 25 Parts Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 9612-1 (Inv) | Levers Mini Set 63 Parts, 3 Books, 1 Gear, 1993 Catalog: Sets: Educational & Dacta: Technic |
| 42146-1 (Inv) | Liebherr Crawler Crane LR 13000 2883 Parts, 2023 Catalog: Sets: Technic: Model: Construction |
| 42100-1 (Inv) | Liebherr R 9800 4108 Parts, 2019 Catalog: Sets: Technic: Model: Construction |
| 970030-1 (Inv) | Lift Arm (Pack of 50) 50 Parts, 2002 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 5003105-1 (Inv) | Lift Arms 50 Parts Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 5269-1 (Inv) | Liftarms and Triangles 12 Parts, 1995 Catalog: Sets: Service Packs: Technic |
| 5280-1 (Inv) | Liftarms and Triangles 10 Parts, 1993 Catalog: Sets: Service Packs: Technic |
| 5291-1 (Inv) | Liftarms and Triangles 12 Parts, 1996 Catalog: Sets: Service Packs: Technic |