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Quincy Air Compressor Unloader Diaphragm – Replacement Part #1855 This is a brand-new replacement diaphragm designed for Quincy air compressor unloader towers. Made of reinforced high temp rubber, this durable diaphragm measures approximately 3-1/8 inches across from flat side to flat side. It is compatible with a range of Quincy compressor models, including the 250, 325, 370, 390, and 5120 series that require part number 1855. Product Details: Quantity: 1 unloader diaphragm Width: Approx. 3-1/8 inches (From flat side to flat side) Material: Reinforced high temp rubber for added strength and longevity Function: Unloader tower diaphragm – controls pressure release during startup Compatible Part #: Aftermarket replacement for Quincy 1855 Fits Models: 250, 325, 370, 390, 5120
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🇺🇸 Ship from USA · On Agora since 2026
$7.95