Pai 4100 Mack 745-279615 Unloader Kit

Unloader Kit for Tu-Flo 500 / 700

• Part number: DUK-4100
• OE MFG: MACK
• OEM Reference: 745-279615
• Cross Reference: MACK : 745-279615; OTHER : 279615
• Product Class: Air Compressors & Parts

The PAI DUK-4100 is an unloader kit for Tu-Flo 500 and Tu-Flo 700 air compressors, providing a component-specific reference for compressor service and parts selection. As heavy duty diesel truck parts, unloader kits ordinarily regulate compressor unloading so the air-compression system can shift between loaded and unloaded operation; the Tu-Flo 500 / 700 designation narrows the intended compressor family. MACK lists 745-279615 as the OEM reference, with 279615 as an additional cross-reference.