Home LEGO 43121 - Engine, Large
Dark gray LEGO Technic large engine block part 43121 with 8 studs on top, a large opening, and pinholes.
LEGO 43121 Engine, Large in Light Bluish Gray - Authentic LEGO Part
Dark gray LEGO Technic large engine block part 43121 with 8 studs on top, a large opening, and pinholes.
LEGO 43121 Engine, Large in Light Bluish Gray - Authentic LEGO Part

LEGO 43121 - Engine, Large

Sale price โ‚ฌ0,31
Color: Black
Condition: Used
Low stock: 1 left
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Dark gray LEGO Technic large engine block part 43121 with 8 studs on top, a large opening, and pinholes.

LEGO 43121 - Engine, Large

LEGO Part

Every LEGO Part tells its own story, and this versatile LEGO Part has become a favorite among builders worldwide. Whether you're creating detailed MOCs or expanding your army builds, this LEGO Part delivers exceptional value and creative potential. As a fundamental LEGO Part for advanced building techniques, it opens up countless possibilities for your next masterpiece.

Why Builders Love This LEGO Part

  • Versatile connection points
  • Perfect clutch power
  • Consistent quality
  • Compatible with all LEGO systems
  • Ideal for repetitive patterns

Technical Specifications

Material ABS Plastic
In Stock Yes

Perfect For MOC Projects

  • SNOT building
  • Army builds
  • Architectural details
  • Custom vehicles
  • Landscape designs

Bulk Orders

Bulk orders? Volume discounts on request. Contact us for custom pricing.

CrocoBricks Advantage

  • 100% Authentic
  • New & Used
  • Fast processing
  • Secure packaging
  • Expert support
Master builders know that success lies in the details, and this essential element delivers precisely what you need. The consistent quality ensures perfect connections every time, while the versatile design adapts to various building techniques. Whether you're working on an intricate display piece or expanding your military diorama, this part maintains its reputation for reliability. CrocoBricks understands the importance of having the right parts in the right quantities. We maintain extensive inventory levels to support your creative vision, whether you need a handful of pieces or hundreds for your next big project. Our commitment to authenticity means you'll always receive genuine LEGO parts, properly sorted and carefully packaged. Don't let your next creation wait. Secure your supply of this essential building element today and experience the CrocoBricks difference in quality, service, and reliability.
Color

Black, Light Bluish Gray

Condition

Used

Compatibility & Usage

System compatibility
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LEGOยฎ System (1958โ€“present): designed to work with standard LEGO bricks, plates and sets.
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Technic: connects where applicable via studs, pins or axles (depending on the item).
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DUPLOยฎ: limited compatibility. Many LEGO System elements attach on top of DUPLO studs; DUPLO does not fit on top of standard LEGO studs.
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Other brick brands with System dimensions may fit; clutch strength can vary.
System-compatible Technic interface (where applicable) DUPLO: limited fit Brand mix possibleโ€ 
Usage & notes
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Contents: see product description for exactly what is included (e.g., minifigures, accessories, box or instructions).
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Condition: New/Used as stated on the product page. Color shades and clutch can differ between production runs.
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Safety: Small parts. Not suitable for children under 3 years. Follow the age guidance for the item.
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Tip: When mixing brands or older/newer pieces, test clutch before building large sections.
Includes only listed items Age guidance applies Photos may be representative
LEGOยฎ, DUPLOยฎ and the brick configuration are trademarks of the LEGO Group, which does not sponsor, authorize or endorse this site. โ€ Compatibility with non-LEGO brands may vary.