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CAT Accumulator 176-3900 The Cat 176-3900 Accumulator (also known as a receiver-drier or refrigerant accumulator) is designed for use in Caterpillar heavy equipment air-conditioning systems. It stores refrigerant, filters debris, and removes moisture from the A/C circuit to protect the compressor and maintain optimal cooling performance. Built from high-strength steel and supplied uncharged, this unit meets OEM standards for durability and pressure retention. It includes an internal desiccant bag to absorb moisture and prevent corrosion within the system. Specifications: Part Number: 176-3900 Cross References: 186-6190 | 152-2823 | 416-5513 | F124088 Function: Accumulator / receiver-drier for refrigerant systems Fittings: #12 female O-ring inlet and outlet (1-1/16"-16 thread) Outer Diameter: 3.50 in (≈ 89 mm) Height: 9.75 in (≈ 248 mm) Weight: ≈ 1.6 kg (3.5 lb) Material: Steel body with integrated mounting bracket Supplied As: Uncharged / dry (ready for system filling) Compatible Equipment: Commonly used on Caterpillar models including 416C, 416D, 420D, and 938G II wheel loaders, dozers, compactors, and other machines that use similar A/C assemblies. Key Features: OEM-quality construction for heavy-duty applications Built-in filter and desiccant for clean, dry refrigerant flow Protects compressor from liquid slugging and moisture damage Direct replacement for Cat 176-3900 and equivalent units Installation Notes: Always verify thread sizes and mount orientation against your machine’s original unit before installation. Use new O-rings and ensure the system is vacuum tested and recharged by a qualified technician. Would you like me to tailor it slightly for SEO (e.g. add keywords like “Caterpillar air conditioning parts