G23LH / GZ25N Insulator Bolt $0.30 Quantity discounts available QuantityPrice Quantity: -+ SKU: AV827 ABOUT THIS PRODUCT:G23LH / GZ25N Insulator Bolt AboutAboutInsulator bolt for G23LH / GZ25N14 / GZ25N23 engines. PMW part # 4507. Zenoah part # 0263-90520. Size M5 x 20.