Plunger:  1. 9H5797, 1W6541, 1W6539, 6N7527, 8N3539, 7W0182, 7W5929

 2. Package: anti-rust proof paper, into nylon bag, individually paper box

 3. Application: Caterpillar engine

 4. Quality:  under warranty

plunger 1W6541