Set Details
- Set Number
- 5003143
- Name
- 40 Tooth Gears
- Theme
- Service Packs
- Year
- 2014
- Pieces
- 25
- Complexity
- Starter
- Build Time
- 10-20 minutes
- Ages
- 4+
- Type
- Play-focused
About LEGO 40 Tooth Gears
LEGO 40 Tooth Gears (set #5003143) is a small, compact build with 25 pieces from the Service Packs theme, released in 2014. The Service Packs line features replacement parts and accessory packs for existing sets. This is a starter-level build suitable for ages 4+, with an estimated build time of 10-20 minutes.
Set Highlights
- 25 pieces at starter complexity — a 10-20 minutes build.
- Compatible with all standard LEGO sets — bricks extend naturally into other sets you own.
- Play-focused build with interactive elements designed for 4+ builders.
Who Is This Set For?
Gift for Ages 4+
The starter difficulty makes this accessible without being trivial — a well-matched gift for LEGO fans in the 4+ age range.
Weekend Build Project
25 pieces with an estimated 10-20 minutes fits comfortably into a focused afternoon or weekend session.
Expanding a Service Packs Collection
A solid addition for collectors building out their Service Packs shelf. Introduces parts and builds that complement other sets from the same line.
Build Tips
Check the piece count on the bag against the parts list before starting — knowing what you have prevents mid-build surprises.
Even in small sets, connection order matters. Follow the steps rather than building sections independently.
Keep the instruction booklet after building — it's the most reliable reference for disassembly, cleaning, or reassembly after storage.
Finding Instructions
Building instructions for LEGO 40 Tooth Gears (#5003143) are available as a free PDF on LEGO.com. You can also upload a photo of this set to LegoFinder to identify it and access the instructions directly.
40 Tooth Gears FAQ
Related Reading
More Service Packs Sets
See all Service Packs →
Also Released in 2014
All 2014 sets →Similar Build Difficulty
Sets at roughly the same piece count and complexity tier — different theme and year, but a similar build experience.
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