Pistons and cylinders for 911 ST 2,3 engine type 911/21 - original Mahle!

Diameter: 85 - 2.3 ltr naturally aspirated engine

Piston Mahle No.: 2K 30878/1

Piston Porsche No.: (91110331021), 91110303921

Cylinder Mahle No.: 2Z 821/1

Cylinder Porsche No.: 91110410621

(the number serves only for the purpose of comparison!)