---
product_id: 650719467
title: "Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Motor, Collectible Set for Adults, Construction Toys Gifts for Teen (1787 PCS)"
brand: "mould king"
price: "€ 125.88"
currency: EUR
in_stock: true
reviews_count: 13
category: "Mould King"
url: https://www.desertcart.fr/products/650719467-mould-king-l4-engine-building-blocks-sets-moc-inline-four
store_origin: FR
region: France
---

# Rechargeable lithium-ion power 1:1 dynamic engine simulation 1787 precision parts Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Motor, Collectible Set for Adults, Construction Toys Gifts for Teen (1787 PCS)

**Brand:** mould king
**Price:** € 125.88
**Availability:** ✅ In Stock

## Summary

> ⚙️ Ignite your inner engineer with the ultimate inline-four engine kit!

## Quick Answers

- **What is this?** Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Motor, Collectible Set for Adults, Construction Toys Gifts for Teen (1787 PCS) by mould king
- **How much does it cost?** € 125.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/products/650719467-mould-king-l4-engine-building-blocks-sets-moc-inline-four)

## 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

- • **STEM Meets Style:** Perfect for future engineers and car enthusiasts, blending education with hands-on fun and creativity.
- • **Power Up Your Passion:** Equipped with a heavy-duty motor and rechargeable lithium-ion battery for authentic piston motion and valve action.
- • **Collectible & Compatible:** A standout display piece compatible with mainstream blocks, ideal for gifting and showcasing your engineering flair.
- • **Seamless Assembly, Superior Quality:** Crafted from premium ABS plastic with smooth, burr-free parts ensuring safe, confident building.
- • **Precision Engineering in Every Brick:** Build a stunning inline-four engine with 1787 meticulously designed pieces for unmatched realism.

## Overview

The Mould King L4 Engine Building Blocks Set is a 1787-piece, highly detailed scale model of an inline-four engine featuring a powerful motor and rechargeable lithium-ion battery. Designed for teens and adults, it offers realistic piston and valve motion, premium ABS construction, and compatibility with popular building blocks, making it a perfect STEM-focused collectible and gift for car enthusiasts and aspiring engineers.

## Description

Buy Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Motor, Collectible Set for Adults, Construction Toys Gifts for Teen (1787 PCS): Science Kits & Toys - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: You need to glue stuff together - You will need to glue stuff together in order for it to work
Review: The Item is Great - The item was great!

## Features

- ▶【Classic Inline-Four Engine Scale Model】Mould King L4 Engine set contains many realistic details. Such as simulate piston motion, Simulates valve and ignition system. Designed specifically for race car fans. The perfect gift for car lovers and future engineers!
- ▶【ELECTRIC DRIVE】This product is powered by the equipped battery and reproduces the dynamic principle for you 1:1. Mould King toy building block adopts a heavy duty motor that can deliver powerful power and rechargeable lithium-ion batterie that provide the best run time.
- ▶【Premium Quality Material】Mould King Engine Kits made from ABS materials and tested for quality control to ensure compliance with safety standards. No smell, no burr, smooth and eco-friendly. You can assemble with confidence and safety.
- ▶【MOC L4 Engine】Mould King L4 Engine building block kits is assembled from 1787 building block parts and has colorful paper instructions to help you easily assemble it. This building block kit compatible with mainstream building blocks. All parts are easy to assemble and will not fall apart.
- ▶【STEM Engine Toy】Mould King building sets are the best for people to recreate scenes from the dream up their own original stories. And it is a good collection. For any occasion such as New Years Day, Christmas, Birthday, Easter, Halloween.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CXJ3H7VG |
| Additional Features | Easy Storage |
| Age Range Description | Teen |
| Best Sellers Rank | #138,262 in Toys & Games ( See Top 100 in Toys & Games ) #4,596 in Toy Building Sets |
| Brand Name | Mould King |
| Color | Black |
| Customer Reviews | 3.9 3.9 out of 5 stars (99) |
| Educational Objective | STEM |
| Is Assembly Required | Yes |
| Item Dimensions | 12.83 x 7.87 x 9.21 inches |
| Manufacturer | MOULD KING |
| Manufacturer Maximum Age (MONTHS) | 1000 |
| Manufacturer Minimum Age (MONTHS) | 168.00 |
| Manufacturer Part Number | MK10087 |
| Material Type | Plastic |
| Model Name | L4 Engine |
| Model Number | 10087 |
| Model Year | 2024 |
| Number of Batteries | 1 Lithium Metal batteries required. (included) |
| Number of Pieces | 1787 |
| Operation Mode | automatic |
| Power Source | battery |
| Set Name | L4 Engine |
| Size | Medium |
| Supported Battery Types | Rechargeable Lithium-ion Battery |
| Theme | Car |
| Toy Building Block Type | Interlocking Toy Building Block |
| UPC | 705736232793 |

## Product Details

- **Brand:** Mould King
- **Model Name:** XY10087
- **Product Dimensions:** 12.83"W x 9.21"H
- **Material:** Plastic
- **Manufacturer:** Mould King

## Images

![Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Motor, Collectible Set for Adults, Construction Toys Gifts for Teen (1787 PCS) - Image 1](https://m.media-amazon.com/images/I/715NQw9qh5L.jpg)
![Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Motor, Collectible Set for Adults, Construction Toys Gifts for Teen (1787 PCS) - Image 2](https://m.media-amazon.com/images/I/71WQf99HdqL.jpg)
![Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Motor, Collectible Set for Adults, Construction Toys Gifts for Teen (1787 PCS) - Image 3](https://m.media-amazon.com/images/I/81A4hLL+YSL.jpg)
![Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Motor, Collectible Set for Adults, Construction Toys Gifts for Teen (1787 PCS) - Image 4](https://m.media-amazon.com/images/I/71YcDoT8syL.jpg)
![Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Motor, Collectible Set for Adults, Construction Toys Gifts for Teen (1787 PCS) - Image 5](https://m.media-amazon.com/images/I/71hZZgboSUL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ You need to glue stuff together
*by T***D on February 27, 2026*

You will need to glue stuff together in order for it to work

### ⭐⭐⭐⭐⭐ The Item is Great
*by A***R on September 8, 2025*

The item was great!

### ⭐⭐ Not good but not bad either
*by E***A on March 2, 2025*

This is not a bad kit at all, especially considering the price and the fact that there’s very little else like it. The packaging and instruction quality are familiar—somewhat similar, for the most part, to LEGO builds. There are some novel pieces, some very cool, that allow for interesting new build techniques. However, some seemingly incomplete blocks are left for you to assemble just to pad the block count—odd and frustrating, especially when they don’t fit together well. I ran into that a few times. Going back to instruction quality—there are several questionable and outright confusing build steps. I’ve built a lot of models, including a few with upwards of 10,000 pieces, and this is the first time I’ve had to use glue to make the build work. Maybe it’s just how my particular pieces fit, but after 30 minutes of trying, there was no way I was going to succeed in a specific step without glue. Most disappointing was that the engine simply didn’t function as it should have. I suspected this all along—the cylinders kept catching early in the build. I adjusted all the rods and checked fittings, but no matter what I did, it would still catch. It rotated manually a few cycles but would eventually seize—either due to the gears themselves, the cylinder housing, or the gear shaft. The list goes on. I pressed on, but it got worse when I attached the electric motor—the build spontaneously deconstructed one of the cylinder heads. Never mind that this particular one had never caught before. I packed it up to be returned, feeling really disappointed about the six or so hours I wasted. All in all, it’s an easy and straightforward build. All the parts were present and packaged properly. But the instructions and finicky construction leave a lot to be desired. I don’t think I’ll be buying Mould King again.

## Frequently Bought Together

- Mould King L4 Engine Building Blocks Sets, MOC Inline-Four Engine Scale Model Kit with Battery and Motor, Collectible Set for Adults, Construction Toys for Kids Children Boys Girl(1787 PCS
- Mould King W16 Engine Building Blocks Set, Combustion Engine Model That Runs, Mini Engine Build Kit for Adults with Battery and Motor, Engineering Construction STEM Toy for Children Boys Girl(952 Pcs)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.fr/products/650719467-mould-king-l4-engine-building-blocks-sets-moc-inline-four](https://www.desertcart.fr/products/650719467-mould-king-l4-engine-building-blocks-sets-moc-inline-four)

---

*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-04-22*