Class 31 P4 / 18.83mm gauge wheelsets Livery_BR blue (Cantrail Stripe) it gained the new “powerhaul”

it gained the new “powerhaul” version of freightliner livery in 2015 and this is how it remains to this day

HYA  37 70 6955 319-1

83 mm Gauge Drop-In Wheel Sets suitable for the Accurascale Class 31 locomotive

37421 was one of four Class 37s that was purchased by Colas Rail in 2013 for a return to the main line

* Multiple bufferbeam brake pipe configurations

Class 31 P4 / 18.83mm gauge wheelsets Livery_BR blue (Cantrail Stripe) it gained the new “powerhaul”P4 18. 83 mm Gauge Drop In Wheel Sets suitable for the Accurascale Class 31 locomotive. Pack of 6 precision CNC machined axles and insulated wheels 1: 76. 2 Scale 18. 83mm Gauge Ready to fit to your Accurascale Class 31 Fully compatible with Scalefour Society Standards