---
product_id: 629546865
title: "Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs)"
brand: "mould king"
price: "€ 94.39"
currency: EUR
in_stock: false
reviews_count: 7
url: https://www.desertcart.at/products/629546865-mould-king-l4-engine-building-blocks-mini-engine-model-kit
store_origin: AT
region: Austria
---

# Motorized piston movement Transparent casing reveals mechanics 1787 pieces precision build Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs)

**Brand:** mould king
**Price:** € 94.39
**Availability:** ❌ Out of Stock

## Summary

> ⚙️ Build the future of engineering, one piston at a time!

## Quick Answers

- **What is this?** Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs) by mould king
- **How much does it cost?** € 94.39 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/629546865-mould-king-l4-engine-building-blocks-mini-engine-model-kit)

## Best For

- mould king enthusiasts

## Why This Product

- Trusted mould king brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Engineering Details:** Includes intake/exhaust paths, timing system, and belt-driven mechanisms.
- • **Compact Yet Impressive Display:** Sized to fit your desk or shelf, showcasing engineering mastery in a sleek package.
- • **STEM Learning Meets Hands-On Fun:** Perfect for ages 14+, it’s an immersive dive into combustion cycles and power transmission.
- • **Authentic Inline 4-Cylinder Engine:** Experience real engine mechanics with moving pistons and crankshaft.
- • **Motorized Operation Brings It to Life:** Watch the engine fire and crankshaft rotate just like the real deal.

## Overview

The Mould King L4 Engine Building Blocks kit features 1787 pieces that replicate a real inline 4-cylinder engine with motorized pistons and crankshaft. Designed for ages 14+, it offers an educational, hands-on experience with accurate mechanical details visible through a transparent casing, all in a compact, display-ready size.

## Description

desertcart.com: Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs) : Toys & Games

Review: Challenging and fun - Equal parts challenging and fun those who grew up with repairable autos. I owned dhoc 2.8 L and 3.2 l. straight six jaguars for much of my life. This straight four was the closest thing that was also at my price point. It took a week to build which is what I wanted. Tbe build was tricky for geezer fingers, but never more than that. As with most Mould King kits, parts fit well and were close to LEGO quality. Two commonly available pieces were missing, replaced by extra parts from other kits. There were also 18 extra parts in this kit (for future use).
Review: Great fun - Seller is highly recommended

## Features

- Realistic L4 Engine Model: This 1787-piece building set replicates a real inline 4-cylinder engine with moving pistons, connecting rods, and a working crankshaftm, the design follows actual engine mechanics for an authentic building experience
- Functional Motorized Operation: Includes a motor to power the engine, demonstrating realistic piston movement and firing sequence, watch the crankshaft rotate and valves operate just like a real engine
- Accurate Mechanical Details: Features precise intake/exhaust paths, timing system, and belt-driven mechanisms. The transparent casing reveals internal workings for better understandin
- Educational Engineering Project: Designed for ages 14+, this set helps users learn engine mechanics, combustion cycles, and power transmission through hands-on assembly
- Compact Display Size: Measures 32.6 x 23.4 x 20 cm (12.8 x 9.2 x 7.9 inches), making it a great size for display while maintaining realistic proportions

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CYBXMV1L |
| Additional Features | Visible L-4 Engine Model Kit |
| Age Range Description | over 14 years old |
| Best Sellers Rank | #507,512 in Toys & Games ( See Top 100 in Toys & Games ) #13,684 in Toy Building Sets |
| Brand Name | Mould King |
| Color | Black |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.5 out of 5 stars 16 Reviews |
| Educational Objective | To support learning in engineering and mechanics, particularly for kids aged 14 and above. |
| Is Assembly Required | Yes |
| Item Dimensions | 11.6 x 3.48 x 16.3 inches |
| Item Weight | 2.08 Kilograms |
| Manufacturer | Guangdong Yuxing Technology Industry Co., Ltd |
| Manufacturer Maximum Age (MONTHS) | 1080 |
| Manufacturer Minimum Age (MONTHS) | 168 |
| Manufacturer Part Number | one00eight7 |
| Material Type | Plastic |
| Model Name | Mould King Egines Visible L-4 Engine Building Blocks |
| Model Number | 10087 |
| Model Year | 2022 |
| Number of Pieces | 787 |
| Operation Mode | automatic |
| Power Source | Motor |
| Set Name | Mould King L4 Engine Building Blocks |
| Size | Large |
| Target Audience | Adult |
| Theme | Engine, Vehicle |
| Toy Building Block Type | Interlocking Toy Building Block |
| UPC | 774882144281 |

## Images

![Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs) - Image 1](https://m.media-amazon.com/images/I/81XYbnBC28L.jpg)
![Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs) - Image 2](https://m.media-amazon.com/images/I/813huWevZFL.jpg)
![Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs) - Image 3](https://m.media-amazon.com/images/I/81nXLNCp6RL.jpg)
![Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs) - Image 4](https://m.media-amazon.com/images/I/810Lwr-fcgL.jpg)
![Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs) - Image 5](https://m.media-amazon.com/images/I/81FT8XEIgsL.jpg)

## Questions & Answers

**Q: What should I do if some building pieces are missing from my set?**
A: 1.Free Replacement: Contact our store with your instruction manual photos of the missing parts, and we’ll ship them to you for free, no extra cost. 2.Quick Response: We typically process requests within 24 hours.

**Q: Are the building pieces compatible with other major toy brick brands?**
A: Our bricks are designed to universally align with standard-sized building systems for endless creativity.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Challenging and fun
*by R***S on February 11, 2026*

Equal parts challenging and fun those who grew up with repairable autos. I owned dhoc 2.8 L and 3.2 l. straight six jaguars for much of my life. This straight four was the closest thing that was also at my price point. It took a week to build which is what I wanted. Tbe build was tricky for geezer fingers, but never more than that. As with most Mould King kits, parts fit well and were close to LEGO quality. Two commonly available pieces were missing, replaced by extra parts from other kits. There were also 18 extra parts in this kit (for future use).

### ⭐⭐⭐⭐⭐ Great fun
*by R***N on October 13, 2025*

Seller is highly recommended

### ⭐⭐⭐⭐⭐ I lost the track of time putting this one together, but I am not complaining.
*by J***K on August 31, 2025*

This was a challenge but I enjoyed every minute of it. There were zero missing pieces. I am looking forward to the next challenge.

## Frequently Bought Together

- Mould King L4 Engine Building Blocks, Mini Engine Model Kit, 10087 Creative Motor Building Kit, STEM Toys Sets, Gift for Kids 14+ and Adults (1787pcs)
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*Product available on Desertcart Austria*
*Store origin: AT*
*Last updated: 2026-05-04*