GRACO Piston Shaft - (SKU: 15A042) 4D (likely refers to a

4D (likely refers to a specific diaphragm or configuration)

typically used in diaphragm pumps and similar systems

Lubricate moving parts according to schedule

an OEM replacement part designed for use in GRACO paint sprayer equipment

It is constructed from durable materials suitable for industrial environments and is intended to provide precise air pressure control while filtering out contaminants such as dust

GRACO Piston Shaft - (SKU: 15A042) 4D (likely refers to aThe GRACO 15A042 SHAFT is a precision engineered piston shaft designed for use in GRACO paint sprayer pumps. It is constructed from high quality materials to ensure durability and reliability, suitable for both industrial and personal applications. This part is essential for the smooth operation and longevity of GRACO spray equipment. Key Features: Piston Shaft 15A042 Designed for GRACO paint sprayer pumps (specific models not listed) Engineered for