G23LH Insulator Manifold $4.99 Quantity discounts available QuantityPrice Quantity: -+ SKU: AV405 ABOUT THIS PRODUCT:G23LH Insulator ManifoldAboutAboutInsulator manifold for Zenoah G23LH engine. PMW part # 4006. Zenoah part # 5500-13163. Has 11mm center hole, bolt spacing fits all RC motors.