Computer Science & AI Replacement Pack for Year 4-6

Notable parts

• 4 parts appear in only a few other sets: Brick Sloped 45° 2 x 1 with Bottom Pin (Trans-Purple) ×8 — also in 45521 Computer Science & AI Kit Year 4-6 (all Educational and Dacta); Brick Round 2 x 2 D. Tube with 45° Elbow and Axle Holes (Crossholes) at Each… (Trans-Purple) ×4 — also in 45521 Computer Science & AI Kit Year 4-6 (all Educational and Dacta); Pulley, 2-Stage (Black) ×4 — also in 45521 Computer Science & AI Kit Year 4-6, 45522 Computer Science & AI Kit Year 7-9, 45547 Computer Science & AI Replacement Pack for Year 7-9 (all Educational and Dacta); Technic Brick 5 x 6 Right Angle Double (White) ×2 — also in 45520 Computer Science & AI Kit Year 1-3, 45521 Computer Science & AI Kit Year 4-6, 45522 Computer Science & AI Kit Year 7-9, 45547 Computer Science & AI Replacement Pack for Year 7-9 (all Educational and Dacta).
• 5 parts are otherwise only found in Educational and Dacta sets: Plate Special 1 x 4 x 2/3 with 1 x 2 Bottom Cutout (Coral) ×4; Plate Special 2 x 2 with Rubber Foot (Black) ×4; Wheel Smooth 24 x 14mm with Pin Hole (Black) ×4; Technic Brick 2 x 4 with 4 Pin Holes, 2 Pins (White) ×2; Torso, Bright Light Orange Arms, Bright Light Orange Hands [Plain] (Bright Light Orange).
• 3 moulds first came out in 2026, including in this set: Plate Special 1 x 4 x 2/3 with 1 x 2 Bottom Cutout ×4; Pulley, 2-Stage ×4; Technic Brick 2 x 4 with 4 Pin Holes, 2 Pins ×2.
• 4 existing moulds first came out in their colour in 2026, including in this set: Brick Sloped 45° 2 x 1 with Bottom Pin (Trans-Purple) ×8; Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale) (Light Bluish Gray) ×8; Brick Round 2 x 2 D. Tube with 45° Elbow and Axle Holes (Crossholes) at Each… (Trans-Purple) ×4; Technic Brick 5 x 6 Right Angle Double (White) ×2.

Calculated from Rebrickable’s public set inventories, excluding sticker sheets and spare parts.