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Dapol 4F-083-006

JNA-Y 'Hawk' Outer Wagon Network Rail Yellow 81705831125-6

Manufacturer catalogue image - please note that pre-release images may be CAD renders or CGI/AI images rather than photographs

Prototype Era
Era 11 (2016 to 2026) The Last Days of Privatisation

Manufacturer description

The JNA-Y, commonly known as the “Hawk”, is a modern Network Rail engineering wagon and a familiar sight on today’s British railway. Introduced through a large-scale rebuild programme, these wagons were converted from the earlier MRA side-tipping ballast wagons, extending their working life and aligning them with modern engineering practices.    

Stripped back to their original frames and rebuilt with new steel box bodies, the JNA-Y offers a robust, high-capacity open wagon designed for loading and unloading by excavator or grab. The conversion programme, delivered for Network Rail in the early 2020s, has produced around 300 wagons, making the JNA-Y one of the most numerous contemporary engineering wagon types.   
 
In service, JNA-Y wagons are used for ballast, spoil and general infrastructure materials, typically operating in long rakes behind modern diesel locomotives, but can equally be spotted operating singly. Finished in Network Rail yellow and often heavily weathered, they are an essential component of the current-era engineering scene, making them an ideal addition to any modern image OO gauge layout. 

Engineering Prototype

We are delighted to launch the JNA-Y with the Engineering prototypes, showing both the conversions from the end and middle cars of the MRA, which have different buffer beams.

Specifications

• Utilising the highly acclaimed Dapol OO Gauge MRA model as a base, with a new body and improved chassis, Bogies and buffer beams
  
• Finely applied livery with accurately printed detail
  
• High level of detail on the body, bogies and buffers representing both MRA end and centre cars
  
• Profiled wheels for exceptionally smooth running
  
• Heavy dicast subfloor for added weight
  
• NEM pockets with self-centring couplings

Catalogue listing

Dapol JNA-Y “Hawk” Outer Wagon is an OO gauge model of a modern Network Rail engineering wagon. The product is supplied under manufacturer part number 4F-083-006 and represents a current‑era railway vehicle.

The model is based on Dapol’s highly regarded MRA OO gauge kit, which has been stripped to its original frame and reconstructed with a new steel box body. The conversion reflects the real‑world rebuilding programme carried out for Network Rail in the early 2020s, when around 300 former MRA side‑tipping ballast wagons were refurbished as JNA‑Y wagons.

Key features include a finely applied Network Rail yellow livery, accurate printed detail on the body, bogies and buffers, and profile‑cut wheels for smooth running. The wagon is fitted with a heavy die‑cast sub‑floor for added weight, NEM pockets and self‑centring couplings, and an improved chassis and bogies derived from the original MRA design.

In operation the JNA‑Y wagons are used for ballast, spoil and general infrastructure material, often running in long rakes behind modern diesel locomotives but also capable of single‑wagon operation. The model provides a realistic addition to contemporary British railway layouts, particularly those depicting current engineering scenes.