Image | Item No. | Description |
| 16-3 (Inv) | Length of Chain Links 25 Parts, 1977 Catalog: Sets: Service Packs |
| 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 |
| 5003116-1 (Inv) | Levers and Half Beams 25 Parts Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 3750-1 (Inv) | Life on Mars Accessories 48 Parts, 2001 Catalog: Sets: Service Packs: Space: Life on Mars |
| 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 |
| 5112-1 (Inv) | Lifting Grabs and Crane Hook 3 Parts, 1990 Catalog: Sets: Service Packs: Technic |
| 9866-1 (Inv) | Light and Transparent Bricks 12 Parts, 1992 Catalog: Sets: Educational & Dacta: Service Packs |
| 1344-1 (Inv) | Light Bricks (4.5V) 12 Parts, 1986 Catalog: Sets: Educational & Dacta: Service Packs |
| 5003-1 (Inv) | Light Bricks, 4.5V 2 Parts, 1987 Catalog: Sets: Service Packs |
| 1147-1 (Inv) | Light Prisms & Holder, Red/Yellow Light Covers 5 Parts, 1981 Catalog: Sets: Service Packs: Train |
| 5073-1 (Inv) | Light Transmitting Elements for Train Sets 5 Parts, 1987 Catalog: Sets: Service Packs: Train |
| 3748-1 (Inv) | Light Unit for Train 4 Parts, 2001 Catalog: Sets: Service Packs: Train |
| 5310-1 (Inv) | Lighting Brick 4 Parts, 1996 Catalog: Sets: Service Packs: Train |
| 15-3 (Inv) | Lighting Brick (2 x 2) 1 Part, 1977 Catalog: Sets: Service Packs |
| 1171-1 (Inv) | Lighting Brick with Red and Blue Globes 5 Parts, 1986 Catalog: Sets: Service Packs |
| 5003110-1 (Inv) | Linear Actuator 2 Parts Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 970124-1 (Inv) | Linear Actuators 3 Parts, 2010 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 5284-1 (Inv) | Loading Grabs with Crane Hook 3 Parts, 1994 Catalog: Sets: Service Packs: Technic |
| 1119-1 (Inv) | Locomotive Piston Assemblies 6 Parts, 1977 Catalog: Sets: Service Packs: Train |
| 19-2 (Inv) | Locomotive Piston Assemblies 6 Parts, 1977 Catalog: Sets: Service Packs: Train |
| 11-3 (Inv) | Locomotive Traction Tires 8 Parts, 1977 Catalog: Sets: Service Packs: Train |
| 5064-1 (Inv) | Locomotive Wheels 4 Parts, 1987 Catalog: Sets: Service Packs: Train |
| 10-3 (Inv) | Locomotive Wheels 8 Parts, 1977 Catalog: Sets: Service Packs: Train |
| 5088-1 (Inv) | Long Beams, 2 x 8 Studs 4 Parts, 1995 Catalog: Sets: Service Packs: DUPLO |
| 970037-1 (Inv) | Long Black Connector Peg (Pack of 100) 100 Parts Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 970037-2 (Inv) | Long Black Connector Peg (Pack of 75) 75 Parts, 2002 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 970605-1 (Inv) | Long Black Connector Pegs (Pack of 100) 100 Parts, 2002 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 9898-1 (Inv) | Long Connecting Leads (9V) 2 Parts, 1996 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 9971-1 (Inv) | Long Cross Axles 24 Parts, 1994 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 2000708-1 (Inv) | Machines & Mechanisms Replacement Pack 1 60 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 2000709-1 (Inv) | Machines & Mechanisms Replacement Pack 2 42 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 1108-1 (Inv) | Magnetic Couplings 4 Parts, 1977 Catalog: Sets: Service Packs: Train |
| 1109-1 (Inv) | Magnetic Couplings for Railway Car 4 Parts, 1977 Catalog: Sets: Service Packs: Train |
| 5066-1 (Inv) | Magnetic Train Coupler 6 Parts, 1987 Catalog: Sets: Service Packs: Train |
| 9-3 (Inv) | Magnetic Train Couplers 4 Parts, 1977 Catalog: Sets: Service Packs: Train |
| 8-4 (Inv) | Magnetic Train Couplers with Plates 4 Parts, 1977 Catalog: Sets: Service Packs: Train |
| 5055-1 (Inv) | Magnets and Magnet Holders 12 Parts, 1993 Catalog: Sets: Service Packs |
| 5397-1 (Inv) | Magnets and Magnet Holders 12 Parts, 1996 Catalog: Sets: Service Packs |
| 5045-1 (Inv) | Magnets, Magnet Holders 12 Parts, 1991 Catalog: Sets: Service Packs |
| 991927-1 (Inv) | Mechanism Miscellaneous Gear Assortment 25 Parts Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 5003104-1 (Inv) | Medium Pulley Wheels 50 Parts Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 5003224-1 (Inv) | Medium Truck Tires and Rims 8 Parts Catalog: Sets: Educational & Dacta: Service Packs |
| 2000700-1 (Inv) | Mindstorms Education (LME) Replacement Pack 1 70 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 2000701-1 (Inv) | Mindstorms Education (LME) Replacement Pack 2 32 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs: Technic |
| 2000702-1 (Inv) | Mindstorms Education (LME) Replacement Pack 3 4 Parts, 2015 Catalog: Sets: Educational & Dacta: Service Packs: Technic |