Dapol 4F-083-002

JNA-Y 'Hawk' Inner Wagon Network Rail Yellow 81705831093-6

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” Inner Wagon is an OO‑scale model of a contemporary Network Rail engineering wagon. The product carries the manufacturer part number 4F‑083‑002 and the catalogue reference 81705831093‑6. It represents the current era of British railway engineering wagons.

The JNA‑Y wagon originated from a large‑scale conversion programme in the early 2020s, in which former MRA side‑tipping ballast wagons were stripped to their original frames and rebuilt with new steel box bodies. Approximately three hundred of these wagons were rebuilt for Network Rail, giving the type a prominent presence on modern infrastructure trains.

The model is based on Dapol’s highly regarded OO‑gauge MRA kit, but incorporates a new body, upgraded chassis, bogies and buffer beams that reflect both end‑car and centre‑car variants of the original conversion. It is finished in Network Rail yellow with finely applied livery and detailed printing, and includes profiled wheels for smooth running, a heavy die‑cast sub‑floor for added weight, and NEM pockets with self‑centring couplings. The high level of detail on the body, bogies and buffers makes it suitable for contemporary British railway modelling.