---
product_id: 635766493
title: "Mould King 10087 L4 Casoline Engine Building Blocks Kit - 1787 Pieces to Build Your Own Mini Engine That Work - DIY STEM Project for Kids, Teens, & Hobby Kit for Adults"
brand: "mould king"
price: "€ 20.33"
currency: EUR
in_stock: false
reviews_count: 5
url: https://www.desertcart.com.cy/products/635766493-mould-king-10087-l4-casoline-engine-building-blocks-kit-1787
store_origin: CY
region: Cyprus
---

# 9V battery-powered XL motor STEM logic & motor skills boost 1787 precision pieces Mould King 10087 L4 Casoline Engine Building Blocks Kit - 1787 Pieces to Build Your Own Mini Engine That Work - DIY STEM Project for Kids, Teens, & Hobby Kit for Adults

**Brand:** mould king
**Price:** € 20.33
**Availability:** ❌ Out of Stock

## Summary

> ⚙️ Build brilliance, power your passion!

## Quick Answers

- **What is this?** Mould King 10087 L4 Casoline Engine Building Blocks Kit - 1787 Pieces to Build Your Own Mini Engine That Work - DIY STEM Project for Kids, Teens, & Hobby Kit for Adults by mould king
- **How much does it cost?** € 20.33 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/635766493-mould-king-10087-l4-casoline-engine-building-blocks-kit-1787)

## 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

- • **Quality You Can Trust:** Crafted from high-precision materials and rigorously tested for flawless performance.
- • **Powered for Performance:** Equipped with an XL motor and 9V battery box to bring your mini engine to kinetic life.
- • **STEM Learning Meets Fun:** Enhance logical thinking, creativity, and fine motor skills through hands-on assembly.
- • **Dynamic Four-Cylinder L4 Engine:** Experience smooth, vibration-reduced operation with a true-to-life linear cylinder arrangement.
- • **Precision Engineering in Every Piece:** 1787 meticulously designed blocks replicate real engine mechanics for an authentic build experience.

## Overview

The Mould King 10087 L4 Gasoline Engine Kit features 1787 precision pieces to build a fully functional mini four-cylinder engine. Designed for ages 8+, this STEM-focused DIY project combines realistic mechanical simulation with an XL motor powered by a 9V battery box, delivering both educational value and kinetic excitement. Perfect for hobbyists and young engineers aiming to master logic, creativity, and motor skills.

## Description

Build Your Own Mini Engine

Review: Challenging, fun and surprisingly high quality - I just finished building this set and I have to say I'm even more impressed at the end than I was at the start. The quality of the instructions is extremely high, almost (95%) as good as Lego and vastly better than a lot of the knock-offs out there. The ~1800 plastic pieces were all extremely high quality, too. I found one that had been over-polished (no burrs anywhere on this set, again in contrast to some of the earlier Lego clones). I've never given a five-star review to a non-Lego building block set before. As far as the build, it was tremendous fun. Lego just doesn't offer a set like this, but if you're looking for a set that shows an internal combustion engine works, Mould King offers FOUR, from about $50 to $100. At the end, it worked beautifully after some careful checking (there's one red axle where the motor connects that can get pushed too far into the set and will prevent the pistons from moving properly). There are some fun details: the oil filter, the chain tensioner, and the metal-plated pieces all add to the overall effect. The only downside is that there's probably a better way of building the overhead camshaft. The short axles used introduce a bit too much flex and make it hard for the pieces to push down on the spring-loaded valves. The simplest solution I came up with is to only install one spring on the double-valves (you'll know what I mean when you build it), which is still sufficient to allow the valves to close but makes it easier for the cam to push them open. I won't be deducting a star for that, though. Instead, I'm trying to figure out which Mould King set to buy next...
Review: Amazing - Excellent Lego for kids

## Features

- The Mould King 10087 direct-coupled four-cylinder gasoline engine (L4) is a common drive choice for SUVs, with four cylinders arranged linearly on a single crankshaft for smooth engine operation. This reduces vibration, and the ignition system ignites the mixture through the spark plug, ensuring stable power output.
- Details Shown - Precisely engineered piston and connecting rod assemblies to replicate true dynamics. The details of the internal mechanical structure accurately simulate the valve and ignition system, and the intake and exhaust paths completely correspond to the movement trajectory of the real engine.
- Building Fun - 1787Pcs engine building kit can increase your logical thinking skills! You can use your creativity, think logically, and improve your motor skills while having fun assembling a model L4 engine kit. Equipped with XL motor and a 9V battery box(require 6 AA batteries, not include), it will bring you kinetic energy surprise!
- STEM Project Choice- DIY engine building kit for boys and girls ages 14 and up. If you are looking for a cool STEM project for your kids or familys. Such as birthday/Christmas/New Year/Easter, etc. This engine model is a good choice.
- Professional Service - Engine models are made of high-quality, high-precision materials. Products are strictly tested before leaving the factory. If you encounter any problems when installing or using the product, please don't hesitate to tell us, we will try our best to deal with it!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CXDW5NN1 |
| Additional Features | Non Toxic |
| Age Range Description | All Age Ranges |
| Brand Name | Mould King |
| Color | Black |
| Customer Package Type | FFP |
| Customer Reviews | 4.2 out of 5 stars 56 Reviews |
| Educational Objective | Building Skills, Logical Thinking, Motor Skills |
| Included Components | Instruction Manual |
| Is Assembly Required | Yes |
| Item Dimensions | 32.5 x 23.4 x 19.8 centimeters |
| Manufacturer | Mould King |
| Manufacturer Maximum Age (MONTHS) | 960 |
| Manufacturer Minimum Age (MONTHS) | 96.00 |
| Manufacturer Part Number | 10087QMNCA |
| Material Type | Plastic |
| Model Name | 10087 L4 |
| Model Year | 2021 |
| Number of Batteries | 1 Lithium Ion batteries required. (included) |
| Number of Pieces | 1787 |
| Operation Mode | manual |
| Power Source | Battery |
| Set Name | 10087 L4 |
| Size | L |
| Supported Battery Types | 9V battery box (uses 6 AA batteries) |
| Theme | Car |
| Toy Building Block Type | Interlocking Toy Building Block |
| UPC | 705736232687 |
| Unit Count | 1787 Count |

## Images

![Mould King 10087 L4 Casoline Engine Building Blocks Kit - 1787 Pieces to Build Your Own Mini Engine That Work - DIY STEM Project for Kids, Teens, & Hobby Kit for Adults - Image 1](https://m.media-amazon.com/images/I/71EiwwkSxjL.jpg)
![Mould King 10087 L4 Casoline Engine Building Blocks Kit - 1787 Pieces to Build Your Own Mini Engine That Work - DIY STEM Project for Kids, Teens, & Hobby Kit for Adults - Image 2](https://m.media-amazon.com/images/I/81Qs8JM3+FL.jpg)
![Mould King 10087 L4 Casoline Engine Building Blocks Kit - 1787 Pieces to Build Your Own Mini Engine That Work - DIY STEM Project for Kids, Teens, & Hobby Kit for Adults - Image 3](https://m.media-amazon.com/images/I/81ld4wyroAL.jpg)
![Mould King 10087 L4 Casoline Engine Building Blocks Kit - 1787 Pieces to Build Your Own Mini Engine That Work - DIY STEM Project for Kids, Teens, & Hobby Kit for Adults - Image 4](https://m.media-amazon.com/images/I/81VVJLQZT7L.jpg)
![Mould King 10087 L4 Casoline Engine Building Blocks Kit - 1787 Pieces to Build Your Own Mini Engine That Work - DIY STEM Project for Kids, Teens, & Hobby Kit for Adults - Image 5](https://m.media-amazon.com/images/I/810Y3XwVVTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Challenging, fun and surprisingly high quality
*by A***T on 10 August 2024*

I just finished building this set and I have to say I'm even more impressed at the end than I was at the start. The quality of the instructions is extremely high, almost (95%) as good as Lego and vastly better than a lot of the knock-offs out there. The ~1800 plastic pieces were all extremely high quality, too. I found one that had been over-polished (no burrs anywhere on this set, again in contrast to some of the earlier Lego clones). I've never given a five-star review to a non-Lego building block set before. As far as the build, it was tremendous fun. Lego just doesn't offer a set like this, but if you're looking for a set that shows an internal combustion engine works, Mould King offers FOUR, from about $50 to $100. At the end, it worked beautifully after some careful checking (there's one red axle where the motor connects that can get pushed too far into the set and will prevent the pistons from moving properly). There are some fun details: the oil filter, the chain tensioner, and the metal-plated pieces all add to the overall effect. The only downside is that there's probably a better way of building the overhead camshaft. The short axles used introduce a bit too much flex and make it hard for the pieces to push down on the spring-loaded valves. The simplest solution I came up with is to only install one spring on the double-valves (you'll know what I mean when you build it), which is still sufficient to allow the valves to close but makes it easier for the cam to push them open. I won't be deducting a star for that, though. Instead, I'm trying to figure out which Mould King set to buy next...

### ⭐⭐⭐⭐⭐ Amazing
*by E***S on 12 January 2025*

Excellent Lego for kids

### ⭐⭐⭐⭐ Mold King engine model 10087
*by N***S on 30 December 2025*

This model engine is a joy to build, however,it is for adults with mechanical skills. No missing parts, some of the parts require a two parts connection to provide a lego like equivalent. Some instructions are not clear and require careful study observation.

## Frequently Bought Together

- Mould King 10087 L4 Casoline Engine Building Blocks Kit - 1787 Pieces to Build Your Own Mini Engine That Work - DIY STEM Project for Kids, Teens, & Hobby Kit for Adults
- Mould King 10131 W16 Engine Building Blocks Sets, V8 Engine Model kit That Run, Build Your Own STEM Model Engine, 16-Cylinder Car Engine Building Engineering Toys for Kids/Adults Collections(952+PCS)

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-08-21*