Wellman Glowplug W542NGK Ref - Y-1729U11.5VNumber provided x 4Applications;LandroverDefender 2.5TDi 11L, 16L 90- 95Discovery 2.5TDi 12L, 17L 11/89-Range Rover 2.5TDi 11/92-Information taken from Wellman catalogue 2004-2005