GZ25N14 / GZ25N23 Cylinder $18.00 Quantity discounts available QuantityPrice Quantity: -+ SKU: CA600 ABOUT THIS PRODUCT:GZ25N14 / GZ25N23 CylinderAboutAboutStock cylinder for Zenoah GZ25N14 / GZ25N23 engine. Works with 10mm thread spark plugs. PMW part # 4501. Zenoah part # 848F3012A2.