If the coupling is dual marked 2004/3004
To find out which model you have remove the soft dock and check to see how many Torx fixing screws hold the pad in place. If its 2 its a 2004 , if its 1 its a 3004.
Stabiliser Spares
£29.95
Alko AKS3004 stabiliser replacement front and rear friction pads. Kit conists of 1 – front pad and 1 – rear pad, plus screws.