Direct Replacement for Haldex - Engineered as a precise replacement for Haldex 90054079 and 90554615 auxiliary lift axle valves, ensuring reliable performance in air suspension dump systems. OEM Cross References - Compatible with Automann 17090054079, Euclid E4328, Mack 20QE2255, Meritor R304328, Neway 434066, Midwest WA9054079, Dayton 334-1600, PAI EM34380, Ford F0HZ-5A743-A, BWP M-90054079, and Navistar-International 1609164C91. Precision-Engineered Specifications - Designed for air suspension dump systems and lift axle control, featuring a pilot-operated air switch configurable as "Normally Closed" or "Normally Open." Port sizes: Normally Open: 1/4" NPT, Normally Closed: 1/4" NPT, Suspension: 1/4" NPT, Pilot: 1/8" NPT. Dimensions: 2-1/4" W x 2-1/4" D x 2" H. Robust & Reliable Build - Constructed from die-cast zinc for exceptional strength and long-lasting durability. Designed for remote chassis mounting, ideal for auxiliary axle applications and rapid air suspension exhaust operations. Optimized 3-Way Pilot Valve Functionality - Built for heavy-duty use in air suspension dump systems, ensuring efficient auxiliary axle control and quick suspension exhaust response when connected to pilot pressure sources. Product Information: Package Included: 3-Way Auxiliary Lift Axle Valve Normally Open Port: 1/4" NPT Normally Closed Port: 1/4" NPT Suspension Port: 1/4" NPT Pilot Port (Top): 1/8" NPT Material: Die-cast Zinc Notes: Do NOT use in brake systems OEM Cross References: Compatible with Haldex 90054079, 90554615 Compatible with Euclid E4328, E-4328 Compatible with Mack 20QE2255 Compatible with Meritor R304328 Compatible with Neway 434066, 90054079 Compatible with PAI EM34380 Compatible with Midwest WA9054079 Compatible with Dayton 334-1600 Compatible with Ford F0HZ-5A743-A Compatible with BWP M-90054079 Compatible with Navistar-International 1609164C91 Compatible with Automann 17090054079, 170.90054079 Product Function & Benefit: This 3-way pilot valve is designed for efficient air suspension and lift axle control, ensuring reliable performance, quick exhaust response, and seamless integration into heavy-duty truck and trailer systems.