Manufacturer catalogue image - please note that pre-release images may be CAD renders or CGI images rather than photographs
Prototype Eras
Era 4 (1948 to 1956) British Railways Early Crest
Era 5 (1956 to 1966) British Railways Late Crest
* Class names often change over the lifespan of a locomotive, so this is not necessarily the class name used by the operator in the period modelled.
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Dapol
4D-025-001
Class 21 D6121 BR GREEN (with Headcode Discs) Diesel Locomotive
Dapol
4D-025-001D
Class 21 D6121 BR GREEN (with Headcode Discs) Diesel Locomotive - DCC fitted
Dapol
4D-025-002
Class 21 D6120 BR Green
Dapol
4D-025-002D
Class 21 D6120 BR Green (DCC-Fitted)
Dapol
4D-025-003D
Class 21 D6116 BR Green SYP DCC
Dapol
4D-025-004
Class 21 D6111 BR Green (Small Yellow Panels) Diesel Locomotives
Dapol
4D-025-004D
Class 21 D6111 BR Green (Small Yellow Panels) Diesel Locomotives DCC Fitted
Dapol
4D-025-004S
Class 21 D6111 BR Green (Small Yellow Panels) Diesel Locomotives DCC Sound Fitted
Dapol
4D-025-003S
Class 21 D6116 BR Green SYP DCC Sound Fitted
Dapol
4D-025-003
Class 21 D6116 BR Green with small yellow panels Diesel Locomotive
Dapol
4D-025-005
Class 21 D6140 BR Green SYP with Tablet Catcher
Dapol
4D-025-005D
Class 21 D6140 BR Green SYP with Tablet Catcher (DCC-Fitted)
Dapol
4D-025-005S
Class 21 D6140 BR Green SYP with Tablet Catcher (DCC-Sound)
Dapol
4D-025-006
Class 21 D6151 BR Green SYP with Tablet Catcher
Dapol
4D-025-006D
Class 21 D6151 BR Green SYP with Tablet Catcher (DCC-Fitted)
Dapol
4D-025-006S
Class 21 D6151 BR Green SYP with Tablet Catcher (DCC-Sound)
Dapol
4D-025-002S
Class 21 D6120 BR Green (DCC-Sound)
Dapol Class 21 D6121 BR Green locomotive, fitted with headcode discs and DCC sound, is supplied in OO gauge. The model is finished in a pristine BR green livery with the early crest and includes directional and interior lighting. All wheels are powered and the locomotive can negotiate a minimum radius of 2 inches. Couplings are NEM with a tension‑lock system.
The representation is of a British Railways Class 21 built by the North British Locomotive Co. between 1958 and 1960, for operation on British Railways. The manufacturer part number is 4D‑025‑001S and the period shown is the British Railways early crest era (1957‑1966). The wheel arrangement is Bo‑Bo.
Key model features include etched grilles, separately fitted handrails, finely detailed cast wheels and metal‑sprung buffers. A 5‑pole Super‑Creep motor with twin brass flywheels provides controlled pulling power and very slow running speed. The model is supplied with magnetic and traditional couplings and an accessory bag containing optional fitted components.
Technical specifications list the model as DCC fitted with sound, designed for two‑rail DCC track, and presented in a pristine finish. Its dimensions are 206 mm in length over buffers, 34 mm wide and 49 mm high.