This listing is for ONE NGK glow plug; please select the quantity you require prior to completing your purchase. From the world's No.1 spark plug manufacturer, you'd expect nothing but the best from their glow plugs too; and you'd be right. NGK have been relentlessly developing engine pre-heating technology since the early 1960s and the inbuilt advanced technology ensures that automotive engineers can get the most out of their engine designs and help them meet the increasing emission targets. Part Number: 4617 Trade Number: Y-541J Glow Plug Type: Metal Voltage [V]: 11 Rated Current [A]: 10 Resistance [Ohm]: 0.8 Overall Length [mm]: 143.1 Spanner Size: 12 mm Fitting Depth [mm]: 24 Tightening Torque [Nm]: 17 Connector type: PIN