fuel injection plunger 1.material:bearing steel 2.type:A,AD,P,MW,PS7100,EP9,etc. 3.efficient service 4.plastic ... . Material: high speed steel, bearing steel.3. Fuel injection plunger type: A type, AD type, P type, MW type, PS7100 type, EP9 ... -15955566227Skype: tracey.wang2006 http://chnpower.en.alibaba.com fuel injection plunger