Mould King 12031 Union Pacific 844 Steam Locomotive Building Set | 3,357 Pcs

Mould King 12031 Union Pacific 844 Steam Locomotive Building Set | 3,357 Pcs
Mould King 12031 Union Pacific 844 Steam Locomotive Building Set | 3,357 Pcs
Mould King 12031 Union Pacific 844 Steam Locomotive Building Set | 3,357 Pcs
Mould King 12031 Union Pacific 844 Steam Locomotive Building Set | 3,357 Pcs
Mould King 12031 Union Pacific 844 Steam Locomotive Building Set | 3,357 Pcs
Mould King 12031 Union Pacific 844 Steam Locomotive Building Set | 3,357 Pcs
Mould King 12031 Union Pacific 844 Steam Locomotive Building Set | 3,357 Pcs

Mould King 12031 Union Pacific 844 Steam Locomotive Building Set | 3,357 Pcs

Regular price $172.00 USD Sale price $146.20 USD Save $25.80
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Free Standard Shipping on all orders, Free Express Shipping on orders over $100


  • VAT Included
  • Ship with Original Gift Box
  • Free Missing Brick Replenishment
  • Expert Fast Answer Building Problem
  • Hassel-free 30 Days Return
  • In stock, ready to ship
  • Inventory on the way
Shipping calculated at checkout.

Introducing the majestic Mould King 12031 Union Pacific 844 Steam Locomotive. This beautifully crafted model is made up of over 3,300 intricately designed pieces, bringing a legendary piece of railway history to your collection. Spanning an impressive 41.5 inches in length, this set captures the grandeur and mechanical complexity of one of the most famous steam locomotives in American history.

The Mould King 12031 is designed for both display and interactive play, featuring a remote-controlled drive that lets you maneuver the locomotive with ease. The front LED headlight and the ability to produce actual steam add to the realism, offering a truly immersive experience. It comes with an oval track measuring 1.7 meters in diameter, allowing ample room for operation.

This set includes a coal tender and water tender, each connected by strong magnetic links for secure and easy attachment. Inside, the cabin details are meticulously recreated to reflect the authentic interior of the steam locomotive. Powered by 2 L high-torque motors and controlled via an MK4 Power Module and a remote controller, this model doesn't just look stunning—it moves with power and precision.

Key Features:

  • Over 3,300 Pcs
  • 41.5 inch long
  • Remote Controlled Drive
  • Front Led Headlight
  • Produces Actual Steam from Locomotive
  • Oval Track Included
  • Incredibly Detailed Interior
  • Accurate Drivetrain
  • 2x L High Torque Motor
  • 1x MK4 Power Module
  • 1x Remote Controller
  • Building Instruction Booklet Included

Shipping to United States:

- Standard Shipping for free, delivered by USPS in 14-18 days.
- DHL/UPS Shipping free at $100 USD+ orders, delivered in 8-12 days.
- Express Expedited Shipping is optional to buy, delivered in 5-9 days.

Shipping to United Kingdom

- Standard Shipping for free, delivered by in 12-15 days.
- Express Expedited Shipping is optional to buy, delivered in 5-9 days.

Shipping to Australia and New Zealand

- Standard Shipping for free, delivered by in 12-15 days.
- Express Shipping free at $100 USD+ orders, delivered by FedEx or DHL in 6-9 days.

Shipping to EU

- Standard Shipping for free, delivered in 18-25 days.
- Express Expedited Shipping is optional to buy, delivered in 6-9 days.

Shipping to Canada

- Standard Shipping for free, delivered by Canada Post in 15-18 days.

Shipping to Asian Countries

- Standard Shipping for free, delivered in 5-7 days.


Please see our Shipping Policy Page for more detailed shipping times by region. 

14+

AGES

3,357

PIECES

12031

ITEM

From our customers

★★★★★

Excellent model, no missing parts and great display case to show off completed car.

Rebecca Lundahl
Richmond, MO
★★★★★

I had a great buy from mould king and the price was also great. Will do more buying from this seller.

Michael Taylor
Washington, DC
★★★★★

Quick delivery, good packaging, looks great and can't wait to build.

Ernie Gurman
Chicago, IL
★★★★★

Has been very entertaining. packaging excellent, bags clearly makes, instructions clear. Have not finished assembly yet. Impression however is that I will try other offerings when this one is complete.

Tyrone Duenas
Kenosha, WI
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