Heidelberg Oil Pressure Combination Cylinder (M2.184.1101/A) High-quality replacement oil pressure combination cylinder/valve unit (D63 H18). Engineered for precision and reliability, this component is an essential solution for maintaining optimal performance in Heidelberg printing equipment. Precision Engineered: Designed for exact fitment and seamless integration. Compatibility: Fully compatible with CD74, XL75, SM74, SX74, and PreDrupa 2008 models. Maintenance Essential: